Yang Shi [Fri, 20 Nov 2015 23:57:10 +0000 (15:57 -0800)]
mm/page-writeback.c: initialize m_dirty to avoid compile warning
When building kernel with gcc 5.2, the below warning is raised:
mm/page-writeback.c: In function 'balance_dirty_pages.isra.10':
mm/page-writeback.c:1545:17: warning: 'm_dirty' may be used uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
The m_dirty{thresh, bg_thresh} are initialized in the block of "if
(mdtc)", so if mdts is null, they won't be initialized before being used.
Initialize m_dirty to zero, also initialize m_thresh and m_bg_thresh to
keep consistency.
They are used later by if condition: !mdtc || m_dirty <=
dirty_freerun_ceiling(m_thresh, m_bg_thresh)
If mdtc is null, dirty_freerun_ceiling will not be called at all, so the
initialization will not change any behavior other than just ceasing the
compile warning.
(akpm: the patch actually reduces .text size by ~20 bytes on gcc-4.x.y)
[akpm@linux-foundation.org: add comment]
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Hellwig [Fri, 20 Nov 2015 23:57:07 +0000 (15:57 -0800)]
various: fix pci_set_dma_mask return value checking
pci_set_dma_mask returns a negative errno value, not a bool like
pci_dma_supported. This of course was just a giant test for attention :)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jongman Heo <jongman.heo@samsung.com>
Tested-by: Jongman Heo <jongman.heo@samsung.com> [pcnet32]
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jason J. Herne [Fri, 20 Nov 2015 23:57:04 +0000 (15:57 -0800)]
mm: loosen MADV_NOHUGEPAGE to enable Qemu postcopy on s390
MADV_NOHUGEPAGE processing is too restrictive. kvm already disables
hugepage but hugepage_madvise() takes the error path when we ask to turn
on the MADV_NOHUGEPAGE bit and the bit is already on. This causes Qemu's
new postcopy migration feature to fail on s390 because its first action is
to madvise the guest address space as NOHUGEPAGE. This patch modifies the
code so that the operation succeeds without error now.
For consistency reasons do the same for MADV_HUGEPAGE.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jerome Marchand [Fri, 20 Nov 2015 23:57:02 +0000 (15:57 -0800)]
mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()
Commit
71394fe50146 ("mm: vmalloc: add flag preventing guard hole
allocation") missed a spot. Currently remove_vm_area() decreases vm->size
to "remove" the guard hole page, even when it isn't present. All but one
users just free the vm_struct rigth away and never access vm->size anyway.
Don't touch the size in remove_vm_area() and have __vunmap() use the
proper get_vm_area_size() helper.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Naoya Horiguchi [Fri, 20 Nov 2015 23:56:59 +0000 (15:56 -0800)]
tools/vm/page-types.c: support KPF_IDLE
PageIdle is exported in include/uapi/linux/kernel-page-flags.h, so let's
make page-types.c tool handle it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Carpenter [Fri, 20 Nov 2015 23:56:56 +0000 (15:56 -0800)]
ncpfs: don't allow negative timeouts
This code causes a static checker warning because it's a user controlled
variable where we cap the upper bound but not the lower bound. Let's
return an -EINVAL for negative timeouts.
[akpm@linux-foundation.org: remove unneeded `else']
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jan Kara <jack@suse.com>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: David Howells <dhowells@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Daniel Baluta [Fri, 20 Nov 2015 23:56:53 +0000 (15:56 -0800)]
configfs: allow dynamic group creation
This patchset introduces IIO software triggers, offers a way of configuring
them via configfs and adds the IIO hrtimer based interrupt source to be used
with software triggers.
The architecture is now split in 3 parts, to remove all IIO trigger specific
parts from IIO configfs core:
(1) IIO configfs - creates the root of the IIO configfs subsys.
(2) IIO software triggers - software trigger implementation, dynamically
creating /config/iio/triggers group.
(3) IIO hrtimer trigger - is the first interrupt source for software triggers
(with syfs to follow). Each trigger type can implement its own set of
attributes.
Lockdep seems to be happy with the locking in configfs patch.
This patch (of 5):
We don't want to hardcode default groups at subsystem
creation time. We export:
* configfs_register_group
* configfs_unregister_group
to allow drivers to programatically create/destroy groups
later, after module init time.
This is needed for IIO configfs support.
(akpm: the other 4 patches to be merged via the IIO tree)
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Suggested-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Octavian Purdila <octavian.purdila@intel.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Adriana Reus <adriana.reus@intel.com>
Cc: Cristina Opriceana <cristina.opriceana@gmail.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Moritz Fischer [Fri, 20 Nov 2015 23:56:51 +0000 (15:56 -0800)]
MAINTAINERS: add Moritz as reviewer for FPGA Manager Framework
Nominate myself as Reviewer.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Acked-by: Alan Tull <atull@opensource.altera.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Fri, 20 Nov 2015 23:56:48 +0000 (15:56 -0800)]
slab.h: sprinkle __assume_aligned attributes
The various allocators return aligned memory. Telling the compiler that
allows it to generate better code in many cases, for example when the
return value is immediately passed to memset().
Some code does become larger, but at least we win twice as much as we lose:
$ scripts/bloat-o-meter /tmp/vmlinux vmlinux
add/remove: 0/0 grow/shrink: 13/52 up/down: 995/-2140 (-1145)
An example of the different (and smaller) code can be seen in mm_alloc(). Before:
: 48 8d 78 08 lea 0x8(%rax),%rdi
: 48 89 c1 mov %rax,%rcx
: 48 89 c2 mov %rax,%rdx
: 48 c7 00 00 00 00 00 movq $0x0,(%rax)
: 48 c7 80 48 03 00 00 movq $0x0,0x348(%rax)
: 00 00 00 00
: 31 c0 xor %eax,%eax
: 48 83 e7 f8 and $0xfffffffffffffff8,%rdi
: 48 29 f9 sub %rdi,%rcx
: 81 c1 50 03 00 00 add $0x350,%ecx
: c1 e9 03 shr $0x3,%ecx
: f3 48 ab rep stos %rax,%es:(%rdi)
After:
: 48 89 c2 mov %rax,%rdx
: b9 6a 00 00 00 mov $0x6a,%ecx
: 31 c0 xor %eax,%eax
: 48 89 d7 mov %rdx,%rdi
: f3 48 ab rep stos %rax,%es:(%rdi)
So gcc's strategy is to do two possibly (but not really, of course)
unaligned stores to the first and last word, then do an aligned rep stos
covering the middle part with a little overlap. Maybe arches which do not
allow unaligned stores gain even more.
I don't know if gcc can actually make use of alignments greater than 8 for
anything, so one could probably drop the __assume_xyz_alignment macros and
just use __assume_aligned(8).
The increases in code size are mostly caused by gcc deciding to
opencode strlen() using the check-four-bytes-at-a-time trick when it
knows the buffer is sufficiently aligned (one function grew by 200
bytes). Now it turns out that many of these strlen() calls showing up
were in fact redundant, and they're gone from -next. Applying the two
patches to next-
20151001 bloat-o-meter instead says
add/remove: 0/0 grow/shrink: 6/52 up/down: 244/-2140 (-1896)
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 20 Nov 2015 17:01:07 +0000 (09:01 -0800)]
Merge tag 'pm+acpi-4.4-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull more power management and ACPI updates from Rafael Wysocki:
"These are mostly fixes and cleanups (ACPI core, PM core, cpufreq, ACPI
EC driver, device properties) including three reverts of recent
intel_pstate driver commits due to a regression introduced by one of
them plus support for Atom Airmont cores in intel_pstate (which really
boils down to adding new frequency tables for Airmont) and additional
turbostat updates.
Specifics:
- Revert three recent intel_pstate driver commits one of which
introduced a regression and the remaining two depend on the
problematic one (Rafael Wysocki).
- Fix breakage related to the recently introduced ACPI _CCA object
support in the PCI DMA setup code (Suravee Suthikulpanit).
- Fix up the recently introduced ACPI CPPC support to only use the
hardware-reduced version of the PCCT structure as the only
architecture to support it (ARM64) will only use hardware-reduced
ACPI anyway (Ashwin Chaugule).
- Fix a cpufreq mediatek driver build problem (Arnd Bergmann).
- Fix the SMBus transaction handling implementation in the ACPI core
to avoid re-entrant calls to wait_event_timeout() which makes
intermittent boot stalls related to the Smart Battery Subsystem
initialization go away and revert a workaround of another problem
with the same underlying root cause (Chris Bainbridge).
- Fix the generic wakeup interrupts framework to avoid using invalid
IRQ numbers (Dmitry Torokhov).
- Remove a redundant check from the ACPI EC driver (Markus Elfring).
- Modify the intel_pstate driver so it can support more Atom flavors
than just one (Baytrail) and add support for Atom Airmont cores
(which require new freqnency tables) to it (Philippe Longepe).
- Clean up MSR-related symbols in turbostat (Len Brown)"
* tag 'pm+acpi-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PCI: Fix OF logic in pci_dma_configure()
Revert "Documentation: kernel_parameters for Intel P state driver"
cpufreq: mediatek: fix build error
cpufreq: intel_pstate: Add separate support for Airmont cores
cpufreq: intel_pstate: Replace BYT with ATOM
Revert "cpufreq: intel_pstate: Use ACPI perf configuration"
Revert "cpufreq: intel_pstate: Avoid calculation for max/min"
ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()
Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"
ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code
PM / wakeirq: check that wake IRQ is valid before accepting it
ACPI / CPPC: Use h/w reduced version of the PCCT structure
x86: remove unused definition of MSR_NHM_PLATFORM_INFO
tools/power turbostat: use new name for MSR_PLATFORM_INFO
Linus Torvalds [Fri, 20 Nov 2015 16:20:04 +0000 (08:20 -0800)]
Merge tag 'powerpc-4.4-2' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixlet from Michael Ellerman:
"Wire up sys_mlock2()"
* tag 'powerpc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Wire up sys_mlock2()
Linus Torvalds [Fri, 20 Nov 2015 04:51:31 +0000 (20:51 -0800)]
Merge tag 'dmaengine-fix-4.4-rc2' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"This has odd fixes spreadout drivers, not major here
- usbdmac fixes for pm
- edma build and logic fixes
- build warn fixes for few drivers"
* tag 'dmaengine-fix-4.4-rc2' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: at_hdmac: use %pad format string for dma_addr_t
dmaengine: at_xdmac: use %pad format string for dma_addr_t
dmaengine: imx-sdma: remove __init annotation on sdma_event_remap
dmaengine: edma: predecence bug in GET_NUM_QDMACH()
dmaengine: edma: fix build without CONFIG_OF
dmaengine: of_dma: Correct return code for of_dma_request_slave_channel in case !CONFIG_OF
dmaengine: sh: usb-dmac: Fix pm_runtime_{enable,disable}() imbalance
dmaengine: sh: usb-dmac: Fix crash on runtime suspend
Linus Torvalds [Fri, 20 Nov 2015 04:39:38 +0000 (20:39 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A varied bunch of fixes, the radeon pull is probably a bit larger than
I'd like, but it contains 2 weeks of stuff, and the Fiji fixes are a
bit large, but they are Fiji specific.
Otherwise:
- mgag200: One cursor regression oops fix.
- vc4: A few small fixes and cleanups.
- core: Atomic fixes and Atomic helper fixes
- i915: Revert for the backlight regression along with a bunch of
fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (58 commits)
drm/atomic-helper: Check encoder/crtc constraints
Revert "drm/i915: skip modeset if compatible for everyone."
drm/mgag200: fix kernel hang in cursor code.
drm/amdgpu: reserve/unreserve objects out of map/unmap operations
drm/amdgpu: move bo_reserve out of amdgpu_vm_clear_bo
drm/amdgpu: add lock for interval tree in vm
drm/amdgpu: keep the owner for VMIDs
drm/amdgpu: move VM manager clean into the VM code again
drm/amdgpu: cleanup VM coding style
drm/amdgpu: remove unused VM manager field
drm/amdgpu: cleanup scheduler command submission
drm/amdgpu: fix typo in firmware name
drm/i915: Consider SPLL as another shared pll, v2.
drm/i915: Fix gpu frequency change tracing
drm/vc4: Make sure that planes aren't scaled.
drm/vc4: Fix some failure to track __iomem decorations on pointers.
drm/vc4: checking for NULL instead of IS_ERR
drm/vc4: fix itnull.cocci warnings
drm/vc4: fix platform_no_drv_owner.cocci warnings
drm/vc4: vc4_plane_duplicate_state() can be static
...
Linus Torvalds [Fri, 20 Nov 2015 02:14:47 +0000 (18:14 -0800)]
Merge tag 'for-linus-4.4' of git://git.code.sf.net/p/openipmi/linux-ipmi
Pull IPMI updates from Corey Minyard:
"Some fixes for small IPMI problems.
The most significant is that the driver wasn't starting the timer for
some messages, which would result in problems if that message failed
for some reason.
The others are small optimizations or making things a little neater"
* tag 'for-linus-4.4' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi watchdog : add panic_wdt_timeout parameter
char: ipmi: Move MODULE_DEVICE_TABLE() to follow struct
ipmi: Stop the timer immediately if idle
ipmi: Start the timer and thread on internal msgs
Linus Torvalds [Fri, 20 Nov 2015 01:58:44 +0000 (17:58 -0800)]
Merge tag 'renesas-sh-drivers-for-v4.4' of git://git./linux/kernel/git/horms/renesas
Pull SH driver fixlet from Simon Horman:
"I am sending this change after v4.4-rc1 has been released as it
depends on SoC changes which are present in that rc:
= Remove now unnecessary reference to CONFIG_ARCH_SHMOBILE_MULTI"
* tag 'renesas-sh-drivers-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
drivers: sh: Get rid of CONFIG_ARCH_SHMOBILE_MULTI
Rafael J. Wysocki [Fri, 20 Nov 2015 00:22:52 +0000 (01:22 +0100)]
Merge branches 'acpi-smbus', 'acpi-ec' and 'acpi-pci'
* acpi-smbus:
Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"
ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code
* acpi-ec:
ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()
* acpi-pci:
PCI: Fix OF logic in pci_dma_configure()
Rafael J. Wysocki [Fri, 20 Nov 2015 00:22:33 +0000 (01:22 +0100)]
Merge branch 'pm-sleep'
* pm-sleep:
PM / wakeirq: check that wake IRQ is valid before accepting it
Rafael J. Wysocki [Fri, 20 Nov 2015 00:22:10 +0000 (01:22 +0100)]
Merge branches 'pm-cpufreq' and 'acpi-cppc'
* pm-cpufreq:
Revert "Documentation: kernel_parameters for Intel P state driver"
cpufreq: mediatek: fix build error
cpufreq: intel_pstate: Add separate support for Airmont cores
cpufreq: intel_pstate: Replace BYT with ATOM
Revert "cpufreq: intel_pstate: Use ACPI perf configuration"
Revert "cpufreq: intel_pstate: Avoid calculation for max/min"
* acpi-cppc:
ACPI / CPPC: Use h/w reduced version of the PCCT structure
Suravee Suthikulpanit [Thu, 19 Nov 2015 00:49:52 +0000 (16:49 -0800)]
PCI: Fix OF logic in pci_dma_configure()
This patch fixes a bug introduced by previous commit,
which incorrectly checkes the of_node of the end-point device.
Instead, it should check the of_node of the host bridge.
Fixes:
50230713b639 ("PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()")
Reported-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Dave Airlie [Thu, 19 Nov 2015 23:45:31 +0000 (09:45 +1000)]
Merge tag 'drm-intel-fixes-2015-11-19' of git://anongit.freedesktop.org/drm-intel into drm-fixes
i915 fixes for 4.4, including the revert for the backlight regression
Olof reported. Otherwise fixes all around.
* tag 'drm-intel-fixes-2015-11-19' of git://anongit.freedesktop.org/drm-intel:
Revert "drm/i915: skip modeset if compatible for everyone."
drm/i915: Consider SPLL as another shared pll, v2.
drm/i915: Fix gpu frequency change tracing
drm/i915: Don't clobber the addfb2 ioctl params
drm/i915: Clear intel_crtc->atomic before updating it.
drm/i915: get runtime PM reference around GEM set_caching IOCTL
drm/i915: Fix GT frequency rounding
drm/i915: quirk backlight present on Macbook 4, 1
drm/i915: Fix crtc_y assignment in intel_find_initial_plane_obj()
Dave Airlie [Thu, 19 Nov 2015 23:44:50 +0000 (09:44 +1000)]
Merge tag 'topic/drm-fixes-2015-11-19' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Here are some drm core fixes for v4.4 that I've picked up. Atomic fixes
from Maarten, and atomic helper fixes from Ville and Daniel.
Admittedly the topmost commit didn't sit in our tree for very long, but
does come with reviews and testing from trustworthy people.
* tag 'topic/drm-fixes-2015-11-19' of git://anongit.freedesktop.org/drm-intel:
drm/atomic-helper: Check encoder/crtc constraints
drm: Fix primary plane size for stereo doubled modes for legacy setcrtc
drm/core: Fix old_fb handling in pan_display_atomic.
drm/core: Fix old_fb handling in restore_fbdev_mode_atomic.
drm/atomic: add a drm_atomic_clean_old_fb helper.
drm/core: Fix old_fb handling in drm_mode_atomic_ioctl.
drm/core: Set legacy_cursor_update in drm_atomic_helper_disable_plane.
Linus Torvalds [Thu, 19 Nov 2015 20:21:23 +0000 (12:21 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix size alignment in __iommu_{alloc,free}_attrs
- Kernel memory mapping fix with CONFIG_DEBUG_RODATA for page sizes
other than 4KB and a fix of the mark_rodata_ro permissions
- dma_get_ops() simplification and behaviour alignment between DT and
ACPI
- function_graph trace fix for cpu_suspend() (CPUs returning from deep
sleep via a different path and confusing the tracer)
- Use of non-global mappings for UEFI run-time services to avoid a
(potentially theoretical) TLB conflict
- Crypto priority reduction of core AES cipher (the accelerated
asynchronous implementation is preferred when available)
- Reverting an old commit that removed BogoMIPS from /proc/cpuinfo on
arm64. Apparently, we had it for a relatively short time and libvirt
started checking for its presence
- Compiler warnings fixed (ptrace.h inclusion from compat.h,
smp_load_acquire with const argument)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: restore bogomips information in /proc/cpuinfo
arm64: barriers: fix smp_load_acquire to work with const arguments
arm64: Fix R/O permissions in mark_rodata_ro
arm64: crypto: reduce priority of core AES cipher
arm64: use non-global mappings for UEFI runtime regions
arm64: kernel: pause/unpause function graph tracer in cpu_suspend()
arm64: do not include ptrace.h from compat.h
arm64: simplify dma_get_ops
arm64: mm: use correct mapping granularity under DEBUG_RODATA
arm64/dma-mapping: Fix sizes in __iommu_{alloc,free}_attrs
Linus Torvalds [Thu, 19 Nov 2015 20:16:12 +0000 (12:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/livepatching
Pull livepatching fix from Jiri Kosina:
"A fix for module handling in case kASLR has been enabled, from Zhou
Chengming"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: x86: fix relocation computation with kASLR
Linus Torvalds [Thu, 19 Nov 2015 20:10:51 +0000 (12:10 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
"Two functional fixes for wacom HID driver from Ping Cheng and Jiri
Kosina"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: wacom: fixup quirks setup for WACOM_DEVICETYPE_PAD
HID: wacom: Add outbounding area for DTU1141
Linus Torvalds [Thu, 19 Nov 2015 19:33:58 +0000 (11:33 -0800)]
Merge tag 'mmc-v4.4-rc1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.4 rc2. It's based on a commit
prior rc1 as I wanted to get them a bit more tested in next before
sending you the pull request.
MMC core:
- Improve reliability when selecting HS200 mode
- Improve reliability when selecting HS400 mode
- mmc: remove bondage between REQ_META and reliable write
MMC host:
- pxamci: Fix read-only gpio detection polarity
- mtk-sd: Preinitialize delay_phase to fix the case when delay is zero
- android-goldfish: Fix build dependency by adding HAS_DMA
- dw_mmc: Remove Seungwon Jeon from MAINTAINERS"
* tag 'mmc-v4.4-rc1' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: remove bondage between REQ_META and reliable write
mmc: MMC_GOLDFISH should depend on HAS_DMA
mmc: mediatek: Preinitialize delay_phase in get_best_delay()
MAINTAINERS: mmc: Remove Seungwon Jeon from dw_mmc
mmc: mmc: Improve reliability of mmc_select_hs400()
mmc: mmc: Move mmc_switch_status()
mmc: mmc: Fix HS setting in mmc_select_hs400()
mmc: mmc: Improve reliability of mmc_select_hs200()
mmc: pxamci: fix read-only gpio detection polarity
Yang Shi [Wed, 18 Nov 2015 18:48:55 +0000 (10:48 -0800)]
arm64: restore bogomips information in /proc/cpuinfo
As previously reported, some userspace applications depend on bogomips
showed by /proc/cpuinfo. Although there is much less legacy impact on
aarch64 than arm, it does break libvirt.
This patch reverts commit
326b16db9f69 ("arm64: delay: don't bother
reporting bogomips in /proc/cpuinfo"), but with some tweak due to
context change and without the pr_info().
Fixes:
326b16db9f69 ("arm64: delay: don't bother reporting bogomips in /proc/cpuinfo")
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org> # 3.12+
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Daniel Vetter [Wed, 18 Nov 2015 17:46:48 +0000 (18:46 +0100)]
drm/atomic-helper: Check encoder/crtc constraints
This was totally lost when I originally created the atomic helpers.
We probably should also check possible_clones in the helpers, but
since the legacy ones didn't do that this is for a separate patch.
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Stone <daniels@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447868808-10266-1-git-send-email-daniel.vetter@ffwll.ch
Jani Nikula [Thu, 19 Nov 2015 08:26:30 +0000 (10:26 +0200)]
Revert "drm/i915: skip modeset if compatible for everyone."
This reverts
commit
6764e9f8724f1231b4deac53b9a82286ac0830e7
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date: Thu Aug 27 15:44:06 2015 +0200
drm/i915: skip modeset if compatible for everyone.
Bring back the i915.fastboot module parameter, disabled by default, due
to backlight regression on Chromebook Pixel 2015.
Apparently the firmware of the Chromebook in question enables the panel
but disables backlight to avoid a brief garbage scanout upon loading the
kernel/module. With fastboot, we leave the backlight untouched, in this
case disabled. The user would have to do a modeset (i.e. not just crank
up the brightness) to enable the backlight.
There is no clean fix readily available, so get back to the drawing
board by reverting.
[N.B. The reference below is for when the thread was included on public
lists, and some of the context had already been dropped by then.]
Reported-and-tested-by: Olof Johansson <olof@lixom.net>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
References: http://marc.info/?i=CAKMK7uES7xk05ki92oeX6gmvZWAh9f2vL7yz=6T+fGK9J3X7cQ@mail.gmail.com
Fixes:
6764e9f8724f ("drm/i915: skip modeset if compatible for everyone.")
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447921590-3785-1-git-send-email-jani.nikula@intel.com
Wang, Rui Y [Wed, 18 Nov 2015 15:00:53 +0000 (23:00 +0800)]
drm/mgag200: fix kernel hang in cursor code.
The machine hang completely with the following message on the console:
[ 487.777538] BUG: unable to handle kernel NULL pointer dereference at
0000000000000060
[ 487.777554] IP: [<
ffffffff8158aaee>] _raw_spin_lock+0xe/0x30
[ 487.777557] PGD
42e9f7067 PUD
42f2fa067 PMD 0
[ 487.777560] Oops: 0002 [#1] SMP
...
[ 487.777618] CPU: 21 PID: 3190 Comm: Xorg Tainted: G E 4.4.0-rc1-3-default+ #6
[ 487.777620] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BRHSXSD1.86B.0059.R00.
1501081238 01/08/2015
[ 487.777621] task:
ffff880853ae4680 ti:
ffff8808696d4000 task.ti:
ffff8808696d4000
[ 487.777625] RIP: 0010:[<
ffffffff8158aaee>] [<
ffffffff8158aaee>] _raw_spin_lock+0xe/0x30
[ 487.777627] RSP: 0018:
ffff8808696d79c0 EFLAGS:
00010246
[ 487.777628] RAX:
0000000000000000 RBX:
0000000000000000 RCX:
0000000000000000
[ 487.777629] RDX:
0000000000000001 RSI:
0000000000000000 RDI:
0000000000000060
[ 487.777630] RBP:
ffff8808696d79e0 R08:
0000000000000000 R09:
ffff88086924a780
[ 487.777631] R10:
000000000001bb40 R11:
0000000000003246 R12:
0000000000000000
[ 487.777632] R13:
ffff880463a27360 R14:
ffff88046ca50218 R15:
0000000000000080
[ 487.777634] FS:
00007f3f81c5a8c0(0000) GS:
ffff88086f060000(0000) knlGS:
0000000000000000
[ 487.777635] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 487.777636] CR2:
0000000000000060 CR3:
000000042e678000 CR4:
00000000001406e0
[ 487.777638] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 487.777639] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 487.777639] Stack:
[ 487.777642]
ffffffffa00eb5fa ffff8808696d7b60 ffff88086b87d800 0000000000000000
[ 487.777644]
ffff8808696d7ac8 ffffffffa01694b6 ffff8808696d7ae8 ffffffff8109c8d5
[ 487.777647]
ffff880469158740 ffff880463a27000 ffff88086b87d800 ffff88086b87d800
[ 487.777647] Call Trace:
[ 487.777674] [<
ffffffffa00eb5fa>] ? drm_gem_object_lookup+0x1a/0xa0 [drm]
[ 487.777681] [<
ffffffffa01694b6>] mga_crtc_cursor_set+0xc6/0xb60 [mgag200]
[ 487.777691] [<
ffffffff8109c8d5>] ? find_busiest_group+0x35/0x4a0
[ 487.777696] [<
ffffffff81086294>] ? __might_sleep+0x44/0x80
[ 487.777699] [<
ffffffff815888c2>] ? __ww_mutex_lock+0x22/0x9c
[ 487.777722] [<
ffffffffa0104f64>] ? drm_modeset_lock+0x34/0xf0 [drm]
[ 487.777733] [<
ffffffffa0148d9e>] restore_fbdev_mode+0xee/0x2a0 [drm_kms_helper]
[ 487.777742] [<
ffffffffa014afce>] drm_fb_helper_restore_fbdev_mode_unlocked+0x2e/0x70 [drm_kms_helper]
[ 487.777748] [<
ffffffffa014b037>] drm_fb_helper_set_par+0x27/0x50 [drm_kms_helper]
[ 487.777752] [<
ffffffff8134560c>] fb_set_var+0x18c/0x3f0
[ 487.777777] [<
ffffffffa02a9b0a>] ? __ext4_handle_dirty_metadata+0x8a/0x210 [ext4]
[ 487.777783] [<
ffffffff8133cb97>] fbcon_blank+0x1b7/0x2b0
[ 487.777790] [<
ffffffff813be2a3>] do_unblank_screen+0xb3/0x1c0
[ 487.777795] [<
ffffffff813b5aba>] vt_ioctl+0x118a/0x1210
[ 487.777801] [<
ffffffff813a8fe0>] tty_ioctl+0x3f0/0xc90
[ 487.777808] [<
ffffffff81172018>] ? kzfree+0x28/0x30
[ 487.777813] [<
ffffffff811e053f>] ? mntput+0x1f/0x30
[ 487.777817] [<
ffffffff811d3f5d>] do_vfs_ioctl+0x30d/0x570
[ 487.777822] [<
ffffffff8107ed3a>] ? task_work_run+0x8a/0xa0
[ 487.777825] [<
ffffffff811d4234>] SyS_ioctl+0x74/0x80
[ 487.777829] [<
ffffffff8158aeae>] entry_SYSCALL_64_fastpath+0x12/0x71
[ 487.777851] Code: 65 ff 0d ce 02 a8 7e 5d c3 ba 01 00 00 00 f0 0f b1 17 85 c0 75 e8 b0 01 5d c3 0f 1f 00 65 ff 05 b1 02 a8 7e 31 c0 ba 01 00 00 00 <f0> 0f b1 17 85 c0 75 01 c3 55 89 c6 48 89 e5 e8 4e f5 b1 ff 5d
[ 487.777854] RIP [<
ffffffff8158aaee>] _raw_spin_lock+0xe/0x30
[ 487.777855] RSP <
ffff8808696d79c0>
[ 487.777856] CR2:
0000000000000060
[ 487.777860] ---[ end trace
672a2cd555e0ebd3 ]---
The cursor code may be entered with file_priv == NULL && handle == NULL.
The problem was introduced by:
"
bf89209 drm/mga200g: Hold a proper reference for cursor_set"
which calls drm_gem_object_lookup(dev, file_priv...). Previously this wasn't
a problem because we checked the handle. Move the check early in the function
can fix the problem.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 19 Nov 2015 03:17:08 +0000 (13:17 +1000)]
Merge branch 'drm-vc4-fixes' of git://github.com/anholt/linux into drm-fixes
Here are a few little VC4 fixes for 4.4 that I didn't get in to you
before the -next pull request. I dropped the feature-ish one I'd
mentioned, and also droppped the one I saw you included in the last
-fixes pull request.
* 'drm-vc4-fixes' of git://github.com/anholt/linux:
drm/vc4: Make sure that planes aren't scaled.
drm/vc4: Fix some failure to track __iomem decorations on pointers.
drm/vc4: checking for NULL instead of IS_ERR
drm/vc4: fix itnull.cocci warnings
drm/vc4: fix platform_no_drv_owner.cocci warnings
drm/vc4: vc4_plane_duplicate_state() can be static
Dave Airlie [Thu, 19 Nov 2015 03:15:17 +0000 (13:15 +1000)]
Merge branch 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Radeon and amdgpu fixes for 4.4. A bit more the usual since I missed
last week. Misc fixes all over the place. The big changes are the
tiling configuration fixes for Fiji.
* 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux: (35 commits)
drm/amdgpu: reserve/unreserve objects out of map/unmap operations
drm/amdgpu: move bo_reserve out of amdgpu_vm_clear_bo
drm/amdgpu: add lock for interval tree in vm
drm/amdgpu: keep the owner for VMIDs
drm/amdgpu: move VM manager clean into the VM code again
drm/amdgpu: cleanup VM coding style
drm/amdgpu: remove unused VM manager field
drm/amdgpu: cleanup scheduler command submission
drm/amdgpu: fix typo in firmware name
drm/amdgpu: remove the unnecessary parameter adev for amdgpu_sa_bo_new()
drm/amdgpu: wait interruptible when semaphores are disabled v2
drm/amdgpu: update pd while updating vm as well
drm/amdgpu: fix handling order in scheduler CS
drm/amdgpu: fix incorrect mutex usage v3
drm/amdgpu: cleanup scheduler fence get/put dance
drm/amdgpu: add command submission workflow tracepoint
drm/amdgpu: update Fiji's tiling mode table
drm/amdgpu: fix bug that can't enter thermal interrupt for bonaire.
drm/amdgpu: fix seq_printf format string
drm/radeon: fix quirk for MSI R7 370 Armor 2X
...
Rafael J. Wysocki [Wed, 18 Nov 2015 23:42:23 +0000 (00:42 +0100)]
Revert "Documentation: kernel_parameters for Intel P state driver"
Revert commit
053f56def57b (Documentation: kernel_parameters for Intel P
state driver) as the code documented by it has been reverted already.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Arnd Bergmann [Mon, 16 Nov 2015 21:27:55 +0000 (22:27 +0100)]
cpufreq: mediatek: fix build error
The recently added mt8173 cpufreq driver relies on the cpu topology
that is always present on ARM64 but optional on ARM32:
drivers/cpufreq/mt8173-cpufreq.c: In function 'mtk_cpufreq_init':
drivers/cpufreq/mt8173-cpufreq.c:441:30: error: 'cpu_topology' undeclared (first use in this function)
cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling);
This refines the Kconfig dependencies so that we can still build on
ARM32, but only if COMPILE_TEST is selected and the CPU topology
code is present.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Philippe Longepe [Tue, 10 Nov 2015 01:40:47 +0000 (17:40 -0800)]
cpufreq: intel_pstate: Add separate support for Airmont cores
There are two flavors of Atom cores to be supported by intel_pstate,
Silvermont and Airmont, so make the driver distinguish between them by
adding separate frequency tables.
Separate the CPU defaults params for each of them and match the CPU IDs
against them as appropriate.
Signed-off-by: Philippe Longepe <philippe.longepe@linux.intel.com>
Signed-off-by: Stephane Gasparini <stephane.gasparini@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw: Subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Philippe Longepe [Tue, 10 Nov 2015 01:40:46 +0000 (17:40 -0800)]
cpufreq: intel_pstate: Replace BYT with ATOM
Rename symbol and function names starting with "BYT" or "byt" to
start with "ATOM" or "atom", respectively, so as to make it clear
that they may apply to Atom in general and not just to Baytrail
(the goal is to support several Atoms architectures eventually).
This should not lead to any functional changes.
Signed-off-by: Philippe Longepe <philippe.longepe@linux.intel.com>
Signed-off-by: Stephane Gasparini <stephane.gasparini@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw : Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Rafael J. Wysocki [Wed, 18 Nov 2015 23:20:42 +0000 (00:20 +0100)]
Revert "cpufreq: intel_pstate: Use ACPI perf configuration"
Revert commit
37afb0003242 (cpufreq: intel_pstate: Use ACPI perf
configuration) that is reported to cause a regression to happen
on a system where invalid data are returned by the ACPI _PSS object.
Since that commit makes assumptions regarding the _PSS output
correctness that may turn out to be overly optimistic in general,
there is a concern that it may introduce regression on more
systems, so it's better to revert it now and we'll revisit the
underlying issue in the next cycle with a more robust solution.
Conflicts:
drivers/cpufreq/intel_pstate.c
Fixes:
37afb0003242 (cpufreq: intel_pstate: Use ACPI perf configuration)
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Rafael J. Wysocki [Wed, 18 Nov 2015 22:29:56 +0000 (23:29 +0100)]
Revert "cpufreq: intel_pstate: Avoid calculation for max/min"
Revert commit
4ef451487019 (cpufreq: intel_pstate: Avoid calculation for
max/min) as it depends on commit
37afb0003242 (cpufreq: intel_pstate: Use
ACPI perf configuration) that causes problems to happen and needs to be
reverted.
Conflicts:
drivers/cpufreq/intel_pstate.c
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Will Deacon [Wed, 18 Nov 2015 10:13:08 +0000 (10:13 +0000)]
arm64: barriers: fix smp_load_acquire to work with const arguments
A newly introduced function in include/net/sock.h passes a const
argument to smp_load_acquire:
static inline int sk_state_load(const struct sock *sk)
{
return smp_load_acquire(&sk->sk_state);
}
This cause an allmodconfig build failure, since our underlying
load-acquire implementation does not handle const types correctly:
include/net/sock.h: In function 'sk_state_load':
./arch/arm64/include/asm/barrier.h:71:3: error: read-only variable '___p1' used as 'asm' output
asm volatile ("ldarb %w0, %1" \
This patch fixes the problem by reusing the trick in READ_ONCE that
loads via a non-const member of an anonymous union. This has the
advantage of allowing us to use smp_load_acquire on packed structures
(e.g. arch_spinlock_t) as well as primitive types.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Daney <david.daney@cavium.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: David Daney <david.daney@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Linus Torvalds [Wed, 18 Nov 2015 16:59:29 +0000 (08:59 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Assorted bug fixes, the mlock2 system call gets added, and one
improvement. The boot from dasd devices is now possible from a wider
range of devices"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: remove SALIPL loader
s390: wire up mlock2 system call
s390: remove g5 elf platform support
s390: avoid cache aliasing under z/VM and KVM
s390/sclp: _sclp_wait_int(): retain full PSW mask
s390/zcrypt: Fix initialisation when zcrypt is built-in
s390/zcrypt: Fix kernel crash on systems without AP bus support
s390: add support for ipl devices in subchannel sets > 0
s390/ipl: fix out of bounds access in scpdata_write
s390/pci_dma: improve debugging of errors during dma map
s390/pci_dma: handle dma table failures
s390/pci_dma: unify label of invalid translation table entries
s390/syscalls: remove system call number calculation
s390/cio: simplify css_generate_pgid
s390/diag: add a s390 prefix to the diagnose trace point
s390/head: fix error message on unsupported hardware
Linus Torvalds [Wed, 18 Nov 2015 16:43:29 +0000 (08:43 -0800)]
Merge tag 'hwmon-for-linus-v4.4-rc2' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Fix build issues in scpi and ina2xx drivers, update scpi driver to
support recent firmware, and fix an uninitialized variable warning in
applesmc driver"
* tag 'hwmon-for-linus-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (scpi) skip unsupported sensors properly
hwmon: (scpi) add thermal-of dependency
hwmon : (applesmc) Fix uninitialized variables warnings
hwmon: (ina2xx) Fix build issue by selecting REGMAP_I2C
Chunming Zhou [Fri, 13 Nov 2015 06:18:38 +0000 (14:18 +0800)]
drm/amdgpu: reserve/unreserve objects out of map/unmap operations
Change-Id: Id6514f2fb6e002437fdbe99353d5d35f4ac736c7
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Chunming Zhou [Fri, 13 Nov 2015 05:43:22 +0000 (13:43 +0800)]
drm/amdgpu: move bo_reserve out of amdgpu_vm_clear_bo
Change-Id: Ifbb0c06680494bfa04d0be5e5941d31ae2e5ef28
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Chunming Zhou [Fri, 13 Nov 2015 05:32:01 +0000 (13:32 +0800)]
drm/amdgpu: add lock for interval tree in vm
Change-Id: I62b892a22af37b32e6b4aefca80a25cf45426ed2
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Christian König [Sat, 14 Nov 2015 20:31:40 +0000 (21:31 +0100)]
drm/amdgpu: keep the owner for VMIDs
We don't need the last VM use any more, keep the owner directly.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>
Christian König [Sun, 15 Nov 2015 19:52:06 +0000 (20:52 +0100)]
drm/amdgpu: move VM manager clean into the VM code again
It's not a good idea to duplicate that code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Sun, 15 Nov 2015 15:04:16 +0000 (16:04 +0100)]
drm/amdgpu: cleanup VM coding style
Fix the indentation and move the VM functions to the structures.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Sun, 15 Nov 2015 14:50:07 +0000 (15:50 +0100)]
drm/amdgpu: remove unused VM manager field
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Christian König [Sat, 14 Nov 2015 20:05:35 +0000 (21:05 +0100)]
drm/amdgpu: cleanup scheduler command submission
Unify the two code path again, cause they do pretty much the same thing.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Christian König [Tue, 17 Nov 2015 10:02:47 +0000 (11:02 +0100)]
drm/amdgpu: fix typo in firmware name
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Maarten Lankhorst [Mon, 16 Nov 2015 13:42:12 +0000 (14:42 +0100)]
drm/i915: Consider SPLL as another shared pll, v2.
When diagnosing a unrelated bug for someone on irc, it would seem the hardware can
be brought up by the BIOS with the embedded displayport using the SPLL for spread spectrum.
Right now this is not handled well in i915, and it calculates the crtc needs to
be reprogrammed on the first modeset without SSC, but the SPLL itself was kept
active. Fix this by exposing SPLL as a shared pll that will not be returned
by intel_get_shared_dpll; you have to know it exists to use it.
Changes since v1:
- Create a separate dpll_hw_state.spll for spll, and use
separate pll functions for spll.
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Tested-by: Gabriel Feceoru <gabriel.feceoru@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447681332-6318-1-git-send-email-maarten.lankhorst@linux.intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Laura Abbott [Thu, 12 Nov 2015 20:21:10 +0000 (12:21 -0800)]
arm64: Fix R/O permissions in mark_rodata_ro
The permissions in mark_rodata_ro trigger a build error
with STRICT_MM_TYPECHECKS. Fix this by introducing
PAGE_KERNEL_ROX for the same reasons as PAGE_KERNEL_RO.
From Ard:
"PAGE_KERNEL_EXEC has PTE_WRITE set as well, making the range
writeable under the ARMv8.1 DBM feature, that manages the
dirty bit in hardware (writing to a page with the PTE_RDONLY
and PTE_WRITE bits both set will clear the PTE_RDONLY bit in that case)"
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Ard Biesheuvel [Mon, 16 Nov 2015 12:12:48 +0000 (13:12 +0100)]
arm64: crypto: reduce priority of core AES cipher
The asynchronous, merged implementations of AES in CBC, CTR and XTS
modes are preferred when available (i.e., when instantiating ablkciphers
explicitly). However, the synchronous core AES cipher combined with the
generic CBC mode implementation will produce a 'cbc(aes)' blkcipher that
is callable asynchronously as well. To prevent this implementation from
being used when the accelerated asynchronous implemenation is also
available, lower its priority to 250 (i.e., below the asynchronous
module's priority of 300).
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Ard Biesheuvel [Tue, 17 Nov 2015 08:53:31 +0000 (09:53 +0100)]
arm64: use non-global mappings for UEFI runtime regions
As pointed out by Russell King in response to the proposed ARM version
of this code, the sequence to switch between the UEFI runtime mapping
and current's actual userland mapping (and vice versa) is potentially
unsafe, since it leaves a time window between the switch to the new
page tables and the TLB flush where speculative accesses may hit on
stale global TLB entries.
So instead, use non-global mappings, and perform the switch via the
ordinary ASID-aware context switch routines.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Mika Kuoppala [Tue, 17 Nov 2015 16:14:26 +0000 (18:14 +0200)]
drm/i915: Fix gpu frequency change tracing
With gen < 9 we have had always 50Mhz units as our hw
ratio. With gen >= 9 the hw ratio changed to 16.667Mhz (50/3).
The result was that our gpu frequency tracing started to output
values 3 times larger than expected due to hardcoded scaling
value. Fix this by using Use intel_gpu_freq() when generating Mhz
value from ratio for 'intel_gpu_freq_change' trace event.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92591
Cc: stable@vger.kernel.org # v4.3+
Reported-by: Eero Tamminen <eero.t.tamminen@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447776866-29384-1-git-send-email-mika.kuoppala@intel.com
Linus Torvalds [Tue, 17 Nov 2015 21:52:59 +0000 (13:52 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix list tests in netfilter ingress support, from Florian Westphal.
2) Fix reversal of input and output interfaces in ingress hook
invocation, from Pablo Neira Ayuso.
3) We have a use after free in r8169, caught by Dave Jones, fixed by
Francois Romieu.
4) Splice use-after-free fix in AF_UNIX frmo Hannes Frederic Sowa.
5) Three ipv6 route handling bug fixes from Martin KaFai Lau:
a) Don't create clone routes not managed by the fib6 tree
b) Don't forget to check expiration of DST_NOCACHE routes.
c) Handle rt->dst.from == NULL properly.
6) Several AF_PACKET fixes wrt transport header setting and SKB
protocol setting, from Daniel Borkmann.
7) Fix thunder driver crash on shutdown, from Pavel Fedin.
8) Several Mellanox driver fixes (max MTU calculations, use of correct
DMA unmap in TX path, etc.) from Saeed Mahameed, Tariq Toukan, Doron
Tsur, Achiad Shochat, Eran Ben Elisha, and Noa Osherovich.
9) Several mv88e6060 DSA driver fixes (wrong bit definitions for
certain registers, etc.) from Neil Armstrong.
10) Make sure to disable preemption while updating per-cpu stats of ip
tunnels, from Jason A. Donenfeld.
11) Various ARM64 bpf JIT fixes, from Yang Shi.
12) Flush icache properly in ARM JITs, from Daniel Borkmann.
13) Fix masking of RX and TX interrupts in ravb driver, from Masaru
Nagai.
14) Fix netdev feature propagation for devices not implementing
->ndo_set_features(). From Nikolay Aleksandrov.
15) Big endian fix in vmxnet3 driver, from Shrikrishna Khare.
16) RAW socket code increments incorrect SNMP counters, fix from Ben
Cartwright-Cox.
17) IPv6 multicast SNMP counters are bumped twice, fix from Neil Horman.
18) Fix handling of VLAN headers on stacked devices when REORDER is
disabled. From Vlad Yasevich.
19) Fix SKB leaks and use-after-free in ipvlan and macvlan drivers, from
Sabrina Dubroca.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits)
MAINTAINERS: Update Mellanox's Eth NIC driver entries
net/core: revert "net: fix __netdev_update_features return.." and add comment
af_unix: take receive queue lock while appending new skb
rtnetlink: fix frame size warning in rtnl_fill_ifinfo
net: use skb_clone to avoid alloc_pages failure.
packet: Use PAGE_ALIGNED macro
packet: Don't check frames_per_block against negative values
net: phy: Use interrupts when available in NOLINK state
phy: marvell: Add support for
88E1540 PHY
arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS
macvlan: fix leak in macvlan_handle_frame
ipvlan: fix use after free of skb
ipvlan: fix leak in ipvlan_rcv_frame
vlan: Do not put vlan headers back on bridge and macvlan ports
vlan: Fix untag operations of stacked vlans with REORDER_HEADER off
via-velocity: unconditionally drop frames with bad l2 length
ipg: Remove ipg driver
dl2k: Add support for IP1000A-based cards
snmp: Remove duplicate OUTMCAST stat increment
net: thunder: Check for driver data in nicvf_remove()
...
Eric Anholt [Fri, 23 Oct 2015 09:36:27 +0000 (10:36 +0100)]
drm/vc4: Make sure that planes aren't scaled.
We would scan out the memory around them if an upscale was attempted,
and would just scan out incorrectly for downscaling.
Signed-off-by: Eric Anholt <eric@anholt.net>
Eric Anholt [Fri, 23 Oct 2015 09:24:11 +0000 (10:24 +0100)]
drm/vc4: Fix some failure to track __iomem decorations on pointers.
Caught by the kbuild test robot.
v2: Fix the +i I dropped in the first version.
Signed-off-by: Eric Anholt <eric@anholt.net>
Dan Carpenter [Wed, 4 Nov 2015 13:21:40 +0000 (16:21 +0300)]
drm/vc4: checking for NULL instead of IS_ERR
vc4_plane_init() returns an ERR_PTR on error, it doesn't return NULL.
This was obviously intended because the next lines call
PTR_ERR(primary_plane) already.
Fixes:
c8b75bca92cb ('Eric Anholt <eric@anholt.net>')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Julia Lawall [Fri, 23 Oct 2015 05:38:00 +0000 (07:38 +0200)]
drm/vc4: fix itnull.cocci warnings
Connector cannot be null because it is a list entry, ie accessed at an
offset from the positions of the list structure pointers themselves.
Generated by: scripts/coccinelle/iterators/itnull.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Eric Anholt <eric@anholt.net>
Julia Lawall [Fri, 23 Oct 2015 05:39:45 +0000 (07:39 +0200)]
drm/vc4: fix platform_no_drv_owner.cocci warnings
drivers/gpu/drm/vc4/vc4_drv.c:248:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Eric Anholt <eric@anholt.net>
kbuild test robot [Thu, 22 Oct 2015 03:12:26 +0000 (11:12 +0800)]
drm/vc4: vc4_plane_duplicate_state() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Or Gerlitz [Tue, 17 Nov 2015 16:25:07 +0000 (18:25 +0200)]
MAINTAINERS: Update Mellanox's Eth NIC driver entries
Eugenia (Jenny) Emantayev is replacing Amir Vadai as the
mlx4 Ethernet driver maintainer.
Saeed Mahameed is assigned to maintain mlx5 Eth functionality.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Tue, 17 Nov 2015 14:49:06 +0000 (15:49 +0100)]
net/core: revert "net: fix __netdev_update_features return.." and add comment
This reverts commit
00ee59271777 ("net: fix __netdev_update_features return
on ndo_set_features failure")
and adds a comment explaining why it's okay to return a value other than
0 upon error. Some drivers might actually change flags and return an
error so it's better to fire a spurious notification rather than miss
these.
CC: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Tue, 17 Nov 2015 14:10:59 +0000 (15:10 +0100)]
af_unix: take receive queue lock while appending new skb
While possibly in future we don't necessarily need to use
sk_buff_head.lock this is a rather larger change, as it affects the
af_unix fd garbage collector, diag and socket cleanups. This is too much
for a stable patch.
For the time being grab sk_buff_head.lock without disabling bh and irqs,
so don't use locked skb_queue_tail.
Fixes:
869e7c62486e ("net: af_unix: implement stream sendpage support")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Reported-by: Eric Dumazet <edumazet@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Tue, 17 Nov 2015 13:16:52 +0000 (14:16 +0100)]
rtnetlink: fix frame size warning in rtnl_fill_ifinfo
Fix the following warning:
CC net/core/rtnetlink.o
net/core/rtnetlink.c: In function ‘rtnl_fill_ifinfo’:
net/core/rtnetlink.c:1308:1: warning: the frame size of 2864 bytes is larger than 2048 bytes [-Wframe-larger-than=]
}
^
by splitting up the huge rtnl_fill_ifinfo into some smaller ones, so we
don't have the huge frame allocations at the same time.
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Zhang [Tue, 17 Nov 2015 12:49:30 +0000 (20:49 +0800)]
net: use skb_clone to avoid alloc_pages failure.
1. new skb only need dst and ip address(v4 or v6).
2. skb_copy may need high order pages, which is very rare on long running server.
Signed-off-by: Junwei Zhang <linggao.zjw@alibaba-inc.com>
Signed-off-by: Martin Zhang <martinbj2008@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tobias Klauser [Tue, 17 Nov 2015 09:40:21 +0000 (10:40 +0100)]
packet: Use PAGE_ALIGNED macro
Use PAGE_ALIGNED(...) instead of open-coding it.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tobias Klauser [Tue, 17 Nov 2015 09:38:36 +0000 (10:38 +0100)]
packet: Don't check frames_per_block against negative values
rb->frames_per_block is an unsigned int, thus can never be negative.
Also fix spacing in the calculation of frames_per_block.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Mon, 16 Nov 2015 22:36:46 +0000 (23:36 +0100)]
net: phy: Use interrupts when available in NOLINK state
The NOLINK state will poll the phy once a second to see if the link
has come up. If the phy has an interrupt line, this polling can be
skipped, since the phy should interrupt when the link returns.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Mon, 16 Nov 2015 22:34:41 +0000 (23:34 +0100)]
phy: marvell: Add support for
88E1540 PHY
The
88E1540 can be found embedded in the Marvell
88E6352 switch. It
is compatible with the
88E1510, so add support for it, using the
88E1510 specific functions.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Mon, 16 Nov 2015 22:35:35 +0000 (14:35 -0800)]
arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS
Save and restore FP/LR in BPF prog prologue and epilogue, save SP to FP
in prologue in order to get the correct stack backtrace.
However, ARM64 JIT used FP (x29) as eBPF fp register, FP is subjected to
change during function call so it may cause the BPF prog stack base address
change too.
Use x25 to replace FP as BPF stack base register (fp). Since x25 is callee
saved register, so it will keep intact during function call.
It is initialized in BPF prog prologue when BPF prog is started to run
everytime. Save and restore x25/x26 in BPF prologue and epilogue to keep
them intact for the outside of BPF. Actually, x26 is unnecessary, but SP
requires 16 bytes alignment.
So, the BPF stack layout looks like:
high
original A64_SP => 0:+-----+ BPF prologue
|FP/LR|
current A64_FP => -16:+-----+
| ... | callee saved registers
+-----+
| | x25/x26
BPF fp register => -80:+-----+
| |
| ... | BPF prog stack
| |
| |
current A64_SP => +-----+
| |
| ... | Function call stack
| |
+-----+
low
CC: Zi Shen Lim <zlim.lnx@gmail.com>
CC: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:54:20 +0000 (22:54 +0100)]
macvlan: fix leak in macvlan_handle_frame
Reset pskb in macvlan_handle_frame in case skb_share_check returned a
clone.
Fixes:
8a4eb5734e8d ("net: introduce rx_handler results and logic around that")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:44:53 +0000 (22:44 +0100)]
ipvlan: fix use after free of skb
ipvlan_handle_frame is a rx_handler, and when it returns a value other
than RX_HANDLER_CONSUMED (here, NET_RX_DROP aka RX_HANDLER_ANOTHER),
__netif_receive_skb_core expects that the skb still exists and will
process it further, but we just freed it.
Fixes:
2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:34:26 +0000 (22:34 +0100)]
ipvlan: fix leak in ipvlan_rcv_frame
Pass a **skb to ipvlan_rcv_frame so that if skb_share_check returns a
new skb, we actually use it during further processing.
It's safe to ignore the new skb in the ipvlan_xmit_* functions, because
they call ipvlan_rcv_frame with local == true, so that dev_forward_skb
is called and always takes ownership of the skb.
Fixes:
2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 17 Nov 2015 19:38:36 +0000 (14:38 -0500)]
Merge branch 'vlan-reorder'
Vladislav Yasevich says:
====================
Fix issues with vlans without REORDER_HEADER
A while ago Phil Sutter brought up an issue with vlans without
REORDER_HEADER and bridges. The problem was that if a vlan
without REORDER_HEADER was a port in the bridge, the bridge ended
up forwarding corrupted packets that still contained the vlan header.
The same issue exists for bridge mode macvlan/macvtap devices.
An additional issue with vlans without REORDER_HEADER is that stacking
them also doesn't work. The reason here is that skb_reorder_vlan_header()
function assumes that it on ETH_HLEN bytes deep into the packet. That
is not the case, when you a vlan without REORRDER_HEADER flag set.
This series attempts to correct these 2 issues.
1) To solve the stacked vlans problem, the patch simply use
skb->mac_len as an offset to start copying mac addresses that
is part of header reordering.
2) To fix the issue with bridge/macvlan/macvtap, the second patch
simply doesn't write the vlan header back to the packet if the
vlan device is either a bridge or a macvlan port. This ends up
being the simplest and least performance intrussive solution.
I've considered extending patch 2 to all stacked devices (essentially
checked for the presense of rx_handler), but that feels like a broader
restriction and _may_ break existing uses.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 16 Nov 2015 20:43:45 +0000 (15:43 -0500)]
vlan: Do not put vlan headers back on bridge and macvlan ports
When a vlan is configured with REORDER_HEADER set to 0, the vlan
header is put back into the packet and makes it appear that
the vlan header is still there even after it's been processed.
This posses a problem for bridge and macvlan ports. The packets
passed to those device may be forwarded and at the time of the
forward, vlan headers end up being unexpectedly present.
With the patch, we make sure that we do not put the vlan header
back (when REORDER_HEADER is 0) if a bridge or macvlan has
been configured on top of the vlan device.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 16 Nov 2015 20:43:44 +0000 (15:43 -0500)]
vlan: Fix untag operations of stacked vlans with REORDER_HEADER off
When we have multiple stacked vlan devices all of which have
turned off REORDER_HEADER flag, the untag operation does not
locate the ethernet addresses correctly for nested vlans.
The reason is that in case of REORDER_HEADER flag being off,
the outer vlan headers are put back and the mac_len is adjusted
to account for the presense of the header. Then, the subsequent
untag operation, for the next level vlan, always use VLAN_ETH_HLEN
to locate the begining of the ethernet header and that ends up
being a multiple of 4 bytes short of the actuall beginning
of the mac header (the multiple depending on the how many vlan
encapsulations ethere are).
As a reslult, if there are multiple levles of vlan devices
with REODER_HEADER being off, the recevied packets end up
being dropped.
To solve this, we use skb->mac_len as the offset. The value
is always set on receive path and starts out as a ETH_HLEN.
The value is also updated when the vlan header manupations occur
so we know it will be correct.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timo Teräs [Mon, 16 Nov 2015 12:36:32 +0000 (14:36 +0200)]
via-velocity: unconditionally drop frames with bad l2 length
By default the driver allowed incorrect frames to be received. What is
worse the code does not handle very short frames correctly. The FCS
length is unconditionally subtracted, and the underflow can cause
skb_put to be called with large number after implicit cast to unsigned.
And indeed, an skb_over_panic() was observed with via-velocity.
This removes the module parameter as it does not work in it's
current state, and should be implemented via NETIF_F_RXALL if needed.
Suggested-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 17 Nov 2015 18:11:08 +0000 (10:11 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"A fs-cache regression fix, and adding a warning about obnoxiou^W
moderation of list given in MAINTAINERS"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
MAINTAINERS: linux-cachefs@redhat.com is moderated for non-subscribers
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
Linus Torvalds [Tue, 17 Nov 2015 17:40:05 +0000 (09:40 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a bug in the qat driver where a user-space pointer is
dereferenced"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: qat - don't use userspace pointer
Lorenzo Pieralisi [Tue, 17 Nov 2015 11:50:51 +0000 (11:50 +0000)]
arm64: kernel: pause/unpause function graph tracer in cpu_suspend()
The function graph tracer adds instrumentation that is required to trace
both entry and exit of a function. In particular the function graph
tracer updates the "return address" of a function in order to insert
a trace callback on function exit.
Kernel power management functions like cpu_suspend() are called
upon power down entry with functions called "finishers" that are in turn
called to trigger the power down sequence but they may not return to the
kernel through the normal return path.
When the core resumes from low-power it returns to the cpu_suspend()
function through the cpu_resume path, which leaves the trace stack frame
set-up by the function tracer in an incosistent state upon return to the
kernel when tracing is enabled.
This patch fixes the issue by pausing/resuming the function graph
tracer on the thread executing cpu_suspend() (ie the function call that
subsequently triggers the "suspend finishers"), so that the function graph
tracer state is kept consistent across functions that enter power down
states and never return by effectively disabling graph tracer while they
are executing.
Fixes:
819e50e25d0c ("arm64: Add ftrace support")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org> # 3.16+
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Ville Syrjälä [Wed, 11 Nov 2015 17:11:28 +0000 (19:11 +0200)]
drm/i915: Don't clobber the addfb2 ioctl params
We try to convert the old way of of specifying fb tiling (obj->tiling)
into the new fb modifiers. We store the result in the passed in mode_cmd
structure. But that structure comes directly from the addfb2 ioctl, and
gets copied back out to userspace, which means we're clobbering the
modifiers that the user provided (all 0 since the DRM_MODE_FB_MODIFIERS
flag wasn't even set by the user). Hence if the user reuses the struct
for another addfb2, the ioctl will be rejected since it's now asking for
some modifiers w/o the flag set.
Fix the problem by making a copy of the user provided structure. We can
play any games we want with the copy.
IGT-Version: 1.12-git (x86_64) (Linux: 4.4.0-rc1-stereo+ x86_64)
...
Subtest basic-X-tiled: SUCCESS (0.001s)
Test assertion failure function pitch_tests, file kms_addfb_basic.c:167:
Failed assertion: drmIoctl(fd, DRM_IOCTL_MODE_ADDFB2, &f) == 0
Last errno: 22, Invalid argument
Stack trace:
#0 [__igt_fail_assert+0x101]
#1 [pitch_tests+0x619]
#2 [__real_main426+0x2f]
#3 [main+0x23]
#4 [__libc_start_main+0xf0]
#5 [_start+0x29]
#6 [<unknown>+0x29]
Subtest framebuffer-vs-set-tiling failed.
**** DEBUG ****
Test assertion failure function pitch_tests, file kms_addfb_basic.c:167:
Failed assertion: drmIoctl(fd, DRM_IOCTL_MODE_ADDFB2, &f) == 0
Last errno: 22, Invalid argument
**** END ****
Subtest framebuffer-vs-set-tiling: FAIL (0.003s)
...
IGT-Version: 1.12-git (x86_64) (Linux: 4.4.0-rc1-stereo+ x86_64)
Subtest framebuffer-vs-set-tiling: SUCCESS (0.000s)
Cc: stable@vger.kernel.org # v4.1+
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes:
2a80eada326f ("drm/i915: Add fb format modifier support")
Testcase: igt/kms_addfb_basic/clobbered-modifier
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447261890-3960-1-git-send-email-ville.syrjala@linux.intel.com
Ville Syrjälä [Mon, 16 Nov 2015 15:02:34 +0000 (17:02 +0200)]
drm: Fix primary plane size for stereo doubled modes for legacy setcrtc
Properly double the hdisplay/vdisplay timings that we use as the primary
plane size with stereo doubled modes. Otherwise the modeset gets
rejected on machines where the primary plane must be fullscreen, and on
the rest only the first eye would get a visible plane.
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org #v3.19+
Fixes:
042652ed9599 ("drm/atomic-helper: implementatations for legacy interfaces")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447686157-29607-1-git-send-email-ville.syrjala@linux.intel.com
Testcase: igt/kms_3d
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Maarten Lankhorst [Mon, 16 Nov 2015 11:49:14 +0000 (12:49 +0100)]
drm/i915: Clear intel_crtc->atomic before updating it.
If an atomic update fails intel_crtc->atomic may have have some values left
from the last atomic check. One example is atomic->wait_for_vblank,
which results in spurious errors in kms_flip.
[ 1551.892708] ------------[ cut here ]------------
[ 1551.892721] WARNING: CPU: 3 PID: 4179 at ../drivers/gpu/drm/drm_irq.c:1199 drm_wait_one_vblank+0x197/0x1a0 [drm]()
[ 1551.892722] vblank not available on crtc 2, ret=-22
[ 1551.892751] Modules linked in: snd_hda_intel i915 drm_kms_helper drm
intel_gtt i2c_algo_bit cfbfillrect syscopyarea cfbimgblt sysfillrect
sysimgblt fb_sys_fops cfbcopyarea agpgart cfg80211 binfmt_misc
snd_hda_codec_hdmi intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic iTCO_wdt
aesni_intel aes_x86_64 glue_helper lrw snd_hda_codec gf128mul
ablk_helper cryptd snd_hwdep psmouse snd_hda_core pcspkr snd_pcm
snd_timer snd lpc_ich i2c_i801 mfd_core soundcore wmi evdev [last
unloaded: drm]
[ 1551.892753] CPU: 3 PID: 4179 Comm: kms_pipe_crc_ba Tainted: G U W 4.3.0-reg+ #6
[ 1551.892754] Hardware name: /DZ77BH-55K, BIOS BHZ7710H.86A.0100.2013.0517.0942 05/17/2013
[ 1551.892758]
ffffffffa03128d8 ffff8800cec73890 ffffffff812c0f3c ffff8800cec738d8
[ 1551.892760]
ffff8800cec738c8 ffffffff8104ff36 ffff880116ae2290 0000000000000002
[ 1551.892762]
ffff8800d39fcda0 ffff8800d038b4d0 ffff8800d42b5550 ffff8800cec73928
[ 1551.892763] Call Trace:
[ 1551.892768] [<
ffffffff812c0f3c>] dump_stack+0x4e/0x82
[ 1551.892771] [<
ffffffff8104ff36>] warn_slowpath_common+0x86/0xc0
[ 1551.892773] [<
ffffffff8104ffbc>] warn_slowpath_fmt+0x4c/0x50
[ 1551.892781] [<
ffffffffa02e6708>] ? drm_vblank_get+0x78/0xd0 [drm]
[ 1551.892787] [<
ffffffffa02e6d47>] drm_wait_one_vblank+0x197/0x1a0 [drm]
[ 1551.892813] [<
ffffffffa03d052f>] intel_post_plane_update+0xef/0x120 [i915]
[ 1551.892832] [<
ffffffffa03d11d2>] intel_atomic_commit+0x4c2/0x1600 [i915]
[ 1551.892862] [<
ffffffffa02ff0c7>] ? drm_atomic_check_only+0x147/0x5e0 [drm]
[ 1551.892872] [<
ffffffffa02feeb7>] ? drm_atomic_add_affected_connectors+0x27/0xf0 [drm]
[ 1551.892881] [<
ffffffffa02ff597>] drm_atomic_commit+0x37/0x60 [drm]
[ 1551.892887] [<
ffffffffa034301a>] restore_fbdev_mode+0x28a/0x2c0 [drm_kms_helper]
[ 1551.892895] [<
ffffffffa0345253>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
[ 1551.892900] [<
ffffffffa03452cd>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
[ 1551.892920] [<
ffffffffa03e7a9a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[ 1551.892923] [<
ffffffff8131a5a7>] fb_set_var+0x1a7/0x3f0
[ 1551.892927] [<
ffffffff8109732f>] ? trace_hardirqs_on_caller+0x12f/0x1c0
[ 1551.892931] [<
ffffffff81314f32>] fbcon_blank+0x212/0x2f0
[ 1551.892935] [<
ffffffff81373f4a>] do_unblank_screen+0xba/0x1d0
[ 1551.892937] [<
ffffffff8136b725>] vt_ioctl+0x13d5/0x1450
[ 1551.892940] [<
ffffffff8107cdd1>] ? preempt_count_sub+0x41/0x50
[ 1551.892943] [<
ffffffff8135d8a3>] tty_ioctl+0x423/0xe30
[ 1551.892947] [<
ffffffff8119f721>] do_vfs_ioctl+0x301/0x560
[ 1551.892949] [<
ffffffff8119b1e3>] ? putname+0x53/0x60
[ 1551.892952] [<
ffffffff811ab376>] ? __fget_light+0x66/0x90
[ 1551.892955] [<
ffffffff8119f9f9>] SyS_ioctl+0x79/0x90
[ 1551.892958] [<
ffffffff81552e97>] entry_SYSCALL_64_fastpath+0x12/0x6f
[ 1551.892961] ---[ end trace
3e764d4b6628c91c ]---
Testcase: kms_flip
Reported-and-tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: stable@vger.kernel.org #v4.3
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/5649C2BA.6080300@mblankhorst.nl
Arnd Bergmann [Mon, 16 Nov 2015 16:32:15 +0000 (17:32 +0100)]
arm64: do not include ptrace.h from compat.h
including ptrace.h brings a definition of BITS_PER_PAGE into device
drivers and cause a build warning in allmodconfig builds:
drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined
#define BITS_PER_PAGE (1UL << (PAGE_SHIFT + 3))
This uses a slightly different way to express current_pt_regs()
that avoids the use of the header and gets away with the already
included asm/ptrace.h.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Arnd Bergmann [Mon, 16 Nov 2015 16:25:48 +0000 (17:25 +0100)]
arm64: simplify dma_get_ops
Including linux/acpi.h from asm/dma-mapping.h causes tons of compile-time
warnings, e.g.
drivers/isdn/mISDN/dsp_ecdis.h:43:0: warning: "FALSE" redefined
drivers/isdn/mISDN/dsp_ecdis.h:44:0: warning: "TRUE" redefined
drivers/net/fddi/skfp/h/targetos.h:62:0: warning: "TRUE" redefined
drivers/net/fddi/skfp/h/targetos.h:63:0: warning: "FALSE" redefined
However, it looks like the dependency should not even there as
I do not see why __generic_dma_ops() cares about whether we have
an ACPI based system or not.
The current behavior is to fall back to the global dma_ops when
a device has not set its own dma_ops, but only for DT based systems.
This seems dangerous, as a random device might have different
requirements regarding IOMMU or coherency, so we should really
never have that fallback and just forbid DMA when we have not
initialized DMA for a device.
This removes the global dma_ops variable and the special-casing
for ACPI, and just returns the dma ops that got set for the
device, or the dummy_dma_ops if none were present.
The original code has apparently been copied from arm32 where we
rely on it for ISA devices things like the floppy controller, but
we should have no such devices on ARM64.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[catalin.marinas@arm.com: removed acpi_disabled check in arch_setup_dma_ops()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Ard Biesheuvel [Mon, 16 Nov 2015 10:18:14 +0000 (11:18 +0100)]
arm64: mm: use correct mapping granularity under DEBUG_RODATA
When booting a 64k pages kernel that is built with CONFIG_DEBUG_RODATA
and resides at an offset that is not a multiple of 512 MB, the rounding
that occurs in __map_memblock() and fixup_executable() results in
incorrect regions being mapped.
The following snippet from /sys/kernel/debug/kernel_page_tables shows
how, when the kernel is loaded 2 MB above the base of DRAM at 0x40000000,
the first 2 MB of memory (which may be inaccessible from non-secure EL1
or just reserved by the firmware) is inadvertently mapped into the end of
the module region.
---[ Modules start ]---
0xfffffdffffe00000-0xfffffe0000000000 2M RW NX ... UXN MEM/NORMAL
---[ Modules end ]---
---[ Kernel Mapping ]---
0xfffffe0000000000-0xfffffe0000090000 576K RW NX ... UXN MEM/NORMAL
0xfffffe0000090000-0xfffffe0000200000 1472K ro x ... UXN MEM/NORMAL
0xfffffe0000200000-0xfffffe0000800000 6M ro x ... UXN MEM/NORMAL
0xfffffe0000800000-0xfffffe0000810000 64K ro x ... UXN MEM/NORMAL
0xfffffe0000810000-0xfffffe0000a00000 1984K RW NX ... UXN MEM/NORMAL
0xfffffe0000a00000-0xfffffe00ffe00000 4084M RW NX ... UXN MEM/NORMAL
The same issue is likely to occur on 16k pages kernels whose load
address is not a multiple of 32 MB (i.e., SECTION_SIZE). So round to
SWAPPER_BLOCK_SIZE instead of SECTION_SIZE.
Fixes:
da141706aea5 ("arm64: add better page protections to arm64")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Cc: <stable@vger.kernel.org> # 4.0+
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Maarten Lankhorst [Wed, 11 Nov 2015 10:29:11 +0000 (11:29 +0100)]
drm/core: Fix old_fb handling in pan_display_atomic.
Don't touch plane->old_fb/fb without having the right locks held.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447237751-9663-6-git-send-email-maarten.lankhorst@ubuntu.com
Maarten Lankhorst [Wed, 11 Nov 2015 10:29:10 +0000 (11:29 +0100)]
drm/core: Fix old_fb handling in restore_fbdev_mode_atomic.
Don't touch plane->old_fb/fb without having the right locks held.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447237751-9663-5-git-send-email-maarten.lankhorst@ubuntu.com
Maarten Lankhorst [Wed, 11 Nov 2015 10:29:09 +0000 (11:29 +0100)]
drm/atomic: add a drm_atomic_clean_old_fb helper.
This is useful for all the boilerplate code about cleaning old_fb.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447237751-9663-4-git-send-email-maarten.lankhorst@ubuntu.com
Maarten Lankhorst [Wed, 11 Nov 2015 10:29:08 +0000 (11:29 +0100)]
drm/core: Fix old_fb handling in drm_mode_atomic_ioctl.
plane_mask should be cleared inside the retry loop, because it gets
reset on every retry. Without this fix the plane->fb refcounting might
get out of sync on retries, resulting in either leaked memory or
use-after-free.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: stable@vger.kernel.org #v4.3
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447237751-9663-3-git-send-email-maarten.lankhorst@ubuntu.com
Maarten Lankhorst [Wed, 11 Nov 2015 10:29:07 +0000 (11:29 +0100)]
drm/core: Set legacy_cursor_update in drm_atomic_helper_disable_plane.
legacy_cursor_update was being set in restore_fbdev_mode_atomic which was
probably unintended. Fix this by only setting it in the function that needs it.
This oversight was introduced in
commit
bbb1e52402b2a288b09ae37e8182599931c7e9df
Author: Rob Clark <robdclark@gmail.com>
Date: Tue Aug 25 15:35:58 2015 -0400
drm/fb-helper: atomic restore_fbdev_mode()...
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: checkpatch fix]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447237751-9663-2-git-send-email-maarten.lankhorst@ubuntu.com
Geert Uytterhoeven [Thu, 12 Nov 2015 11:46:33 +0000 (11:46 +0000)]
MAINTAINERS: linux-cachefs@redhat.com is moderated for non-subscribers
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Geert Uytterhoeven [Thu, 12 Nov 2015 11:46:23 +0000 (11:46 +0000)]
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’:
fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in
this function
If the jump to label "error" is taken, "ret" will indeed be
uninitialized, and random stack data may be printed by the debug code.
Fixes:
102f4d900c9c8f5e ("FS-Cache: Handle a write to the page immediately beyond the EOF marker")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Jiri Kosina [Mon, 16 Nov 2015 23:24:14 +0000 (00:24 +0100)]
HID: wacom: fixup quirks setup for WACOM_DEVICETYPE_PAD
Given that INTUOSHT < BAMBOO_PT
features->type >= INTUOSHT || features->type <= BAMBOO_PT
condition is always true, and therefore device_type is under certain
circumstances wrongly set with WACOM_DEVICETYPE_PAD bit set.
Fix the condition so that it actually represents the range as intended.
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Markus Elfring [Sun, 15 Nov 2015 21:42:27 +0000 (22:42 +0100)]
ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()
The acpi_ec_delete_query() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Chris Bainbridge [Thu, 12 Nov 2015 19:24:47 +0000 (19:24 +0000)]
Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"
Revert commit
3349fb64b292 (ACPI / SBS: Add 5 us delay to fix SBS
hangs on MacBook), since the delay introduced by it is not necessary
any more after commit
add68d6aa9e2 (ACPI / SMBus: Fix boot stalls /
high CPU caused by reentrant code).
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Chris Bainbridge [Thu, 12 Nov 2015 18:05:37 +0000 (18:05 +0000)]
ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code
In the SBS initialisation, a reentrant call to wait_event_timeout()
causes an intermittent boot stall of several minutes usually following
the "Switching to clocksource tsc" message. Another symptom of this bug
is high CPU usage from programs (Firefox, upowerd) querying the battery
state. This is caused by:
1. drivers/acpi/sbshc.c wait_transaction_complete() calls
wait_event_timeout():
if (wait_event_timeout(hc->wait, smb_check_done(hc),
msecs_to_jiffies(timeout)))
2. ___wait_event sets task state to uninterruptible
3. ___wait_event calls the "condition" smb_check_done()
4. smb_check_done (sbshc.c) calls through to ec_read() in
drivers/acpi/ec.c
5. ec_guard() is reached which calls wait_event_timeout()
if (wait_event_timeout(ec->wait,
ec_transaction_completed(ec),
guard))
ie. wait_event_timeout() is being called again inside evaluation of
the previous wait_event_timeout() condition
5. The EC IRQ handler calls wake_up() and wakes up the sleeping task in
ec_guard()
6. The task is now in state running even though the wait "condition" is
still being evaluated
7. The "condition" check returns false so ___wait_event calls
schedule_timeout()
8. Since the task state is running, the scheduler immediately schedules
it again
9. This loop usually repeats for around 250 seconds even though the
original wait_event_timeout was only 1000ms.
The timeout is incorrect because each call to schedule_timeout()
usually returns immediately, taking less than 1ms, so the jiffies
timeout counter is not decremented. The task is now stuck in a
running state, and so is highly likely to be immediately
rescheduled, which takes less than a jiffy. The loop will never exit
if all schedule_timeout() calls take less than a jiffy.
Fix this by replacing SMBus reads in the wait_event_timeout condition
with checks of a boolean value that is updated by the EC query handler.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=107191
Link: https://lkml.org/lkml/2015/11/6/776
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Ondrej Zary [Sun, 15 Nov 2015 21:36:12 +0000 (22:36 +0100)]
ipg: Remove ipg driver
Now that IP1000A chips are supported by dl2k driver, the buggy ipg
driver can be removed.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ondrej Zary [Sun, 15 Nov 2015 21:36:11 +0000 (22:36 +0100)]
dl2k: Add support for IP1000A-based cards
Add support for IP1000A chips to dl2k driver.
IP1000A chip looks like a TC9020 with integrated PHY.
This allows IP1000A chips to work reliably because the ipg driver is
buggy - it loses packets under load and then completely stops
transmitting data.
Tested with Asus NX1101 v2.0 at 10, 100 and 1000Mbps:
vendor=0x13f0 device=0x1023 (rev 0x41)
subsystem vendor=0x1043 device=0x8180
MAC address registers access needed to be changed from 8-bit to 16-bit
because 8-bit does not work on IP1000A. 8-bit access is not even
allowed in the TC9020 datasheet (although it worked). 16-bit access
works on both.
Tested that it does not break D-Link DGE-550T (DL-2000 chip, probably
a rebranded TC9020):
vendor=0x1186 device=0x4000 (rev 0x0c)
subsystem vendor=0x1186 device=0x4000
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / log