GitHub/LineageOS/android_kernel_motorola_exynos9610.git
9 years agomm: ZONE_DEVICE for "device memory"
Dan Williams [Sun, 9 Aug 2015 19:29:06 +0000 (15:29 -0400)]
mm: ZONE_DEVICE for "device memory"

While pmem is usable as a block device or via DAX mappings to userspace
there are several usage scenarios that can not target pmem due to its
lack of struct page coverage. In preparation for "hot plugging" pmem
into the vmemmap add ZONE_DEVICE as a new zone to tag these pages
separately from the ones that are subject to standard page allocations.
Importantly "device memory" can be removed at will by userspace
unbinding the driver of the device.

Having a separate zone prevents allocation and otherwise marks these
pages that are distinct from typical uniform memory.  Device memory has
different lifetime and performance characteristics than RAM.  However,
since we have run out of ZONES_SHIFT bits this functionality currently
depends on sacrificing ZONE_DMA.

Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Jerome Glisse <j.glisse@gmail.com>
[hch: various simplifications in the arch interface]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agomm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
Christoph Hellwig [Fri, 7 Aug 2015 21:41:01 +0000 (17:41 -0400)]
mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h

Three architectures already define these, and we'll need them genericly
soon.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agodax: drop size parameter to ->direct_access()
Dan Williams [Fri, 7 Aug 2015 21:41:00 +0000 (17:41 -0400)]
dax: drop size parameter to ->direct_access()

None of the implementations currently use it.  The common
bdev_direct_access() entry point handles all the size checks before
calling ->direct_access().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge branch 'pmem-api' into libnvdimm-for-next
Dan Williams [Thu, 27 Aug 2015 23:40:26 +0000 (19:40 -0400)]
Merge branch 'pmem-api' into libnvdimm-for-next

9 years agond_blk: change aperture mapping from WC to WB
Ross Zwisler [Thu, 27 Aug 2015 19:14:20 +0000 (13:14 -0600)]
nd_blk: change aperture mapping from WC to WB

This should result in a pretty sizeable performance gain for reads.  For
rough comparison I did some simple read testing using PMEM to compare
reads of write combining (WC) mappings vs write-back (WB).  This was
done on a random lab machine.

PMEM reads from a write combining mapping:
# dd of=/dev/null if=/dev/pmem0 bs=4096 count=100000
100000+0 records in
100000+0 records out
409600000 bytes (410 MB) copied, 9.2855 s, 44.1 MB/s

PMEM reads from a write-back mapping:
# dd of=/dev/null if=/dev/pmem0 bs=4096 count=1000000
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB) copied, 3.44034 s, 1.2 GB/s

To be able to safely support a write-back aperture I needed to add
support for the "read flush" _DSM flag, as outlined in the DSM spec:

http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf

This flag tells the ND BLK driver that it needs to flush the cache lines
associated with the aperture after the aperture is moved but before any
new data is read.  This ensures that any stale cache lines from the
previous contents of the aperture will be discarded from the processor
cache, and the new data will be read properly from the DIMM.  We know
that the cache lines are clean and will be discarded without any
writeback because either a) the previous aperture operation was a read,
and we never modified the contents of the aperture, or b) the previous
aperture operation was a write and we must have written back the dirtied
contents of the aperture to the DIMM before the I/O was completed.

In order to add support for the "read flush" flag I needed to add a
generic routine to invalidate cache lines, mmio_flush_range().  This is
protected by the ARCH_HAS_MMIO_FLUSH Kconfig variable, and is currently
only supported on x86.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agonvdimm: change to use generic kvfree()
yalin wang [Thu, 27 Aug 2015 23:35:48 +0000 (19:35 -0400)]
nvdimm: change to use generic kvfree()

Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem, dax: have direct_access use __pmem annotation
Ross Zwisler [Tue, 18 Aug 2015 19:55:41 +0000 (13:55 -0600)]
pmem, dax: have direct_access use __pmem annotation

Update the annotation for the kaddr pointer returned by direct_access()
so that it is a __pmem pointer.  This is consistent with the PMEM driver
and with how this direct_access() pointer is used in the DAX code.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agodax: update I/O path to do proper PMEM flushing
Ross Zwisler [Tue, 18 Aug 2015 19:55:40 +0000 (13:55 -0600)]
dax: update I/O path to do proper PMEM flushing

Update the DAX I/O path so that all operations that store data (I/O
writes, zeroing blocks, punching holes, etc.) properly synchronize the
stores to media using the PMEM API.  This ensures that the data DAX is
writing is durable on media before the operation completes.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem: add copy_from_iter_pmem() and clear_pmem()
Ross Zwisler [Tue, 18 Aug 2015 19:55:39 +0000 (13:55 -0600)]
pmem: add copy_from_iter_pmem() and clear_pmem()

Add support for two new PMEM APIs, copy_from_iter_pmem() and
clear_pmem().  copy_from_iter_pmem() is used to copy data from an
iterator into a PMEM buffer.  clear_pmem() zeros a PMEM memory range.

Both of these new APIs must be explicitly ordered using a wmb_pmem()
function call and are implemented in such a way that the wmb_pmem()
will make the stores to PMEM durable.  Because both APIs are unordered
they can be called as needed without introducing any unwanted memory
barriers.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem, x86: clean up conditional pmem includes
Ross Zwisler [Tue, 18 Aug 2015 19:55:38 +0000 (13:55 -0600)]
pmem, x86: clean up conditional pmem includes

Prior to this change x86_64 used the pmem defines in
arch/x86/include/asm/pmem.h, and UM used the default ones at the
top of include/linux/pmem.h.  The inclusion or exclusion in linux/pmem.h
was controlled by CONFIG_ARCH_HAS_PMEM_API, but the ones in asm/pmem.h
were controlled by ARCH_HAS_NOCACHE_UACCESS.

Instead, control them both with CONFIG_ARCH_HAS_PMEM_API so that it's
clear that they are related and we don't run into the possibility where
they are both included or excluded.  Also remove a bunch of stale
function prototypes meant for UM in asm/pmem.h - these just conflicted
with the inline defaults in linux/pmem.h and gave compile errors.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem: remove layer when calling arch_has_wmb_pmem()
Ross Zwisler [Tue, 18 Aug 2015 19:55:37 +0000 (13:55 -0600)]
pmem: remove layer when calling arch_has_wmb_pmem()

Prior to this change arch_has_wmb_pmem() was only called by
arch_has_pmem_api().  Both arch_has_wmb_pmem() and arch_has_pmem_api()
checked to make sure that CONFIG_ARCH_HAS_PMEM_API was enabled.

Instead, remove the old arch_has_wmb_pmem() wrapper to be rid of one
extra layer of indirection and the redundant CONFIG_ARCH_HAS_PMEM_API
check. Rename __arch_has_wmb_pmem() to arch_has_wmb_pmem() since we no
longer have a wrapper, and just have arch_has_pmem_api() call the
architecture specific arch_has_wmb_pmem() directly.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem, x86: move x86 PMEM API to new pmem.h header
Ross Zwisler [Tue, 18 Aug 2015 19:55:36 +0000 (13:55 -0600)]
pmem, x86: move x86 PMEM API to new pmem.h header

Move the x86 PMEM API implementation out of asm/cacheflush.h and into
its own header asm/pmem.h.  This will allow members of the PMEM API to
be more easily identified on this and other architectures.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option
Dan Williams [Wed, 19 Aug 2015 04:34:34 +0000 (00:34 -0400)]
libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option

We currently register a platform device for e820 type-12 memory and
register a nvdimm bus beneath it.  Registering the platform device
triggers the device-core machinery to probe for a driver, but that
search currently comes up empty.  Building the nvdimm-bus registration
into the e820_pmem platform device registration in this way forces
libnvdimm to be built-in.  Instead, convert the built-in portion of
CONFIG_X86_PMEM_LEGACY to simply register a platform device and move the
rest of the logic to the driver for e820_pmem, for the following
reasons:

1/ Letting e820_pmem support be a module allows building and testing
   libnvdimm.ko changes without rebooting

2/ All the normal policy around modules can be applied to e820_pmem
   (unbind to disable and/or blacklisting the module from loading by
   default)

3/ Moving the driver to a generic location and converting it to scan
   "iomem_resource" rather than "e820.map" means any other architecture can
   take advantage of this simple nvdimm resource discovery mechanism by
   registering a resource named "Persistent Memory (legacy)"

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem: switch to devm_ allocations
Christoph Hellwig [Tue, 11 Aug 2015 03:07:08 +0000 (23:07 -0400)]
pmem: switch to devm_ allocations

Signed-off-by: Christoph Hellwig <hch@lst.de>
[djbw: tools/testing/nvdimm/ and memunmap_pmem support]
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agodevres: add devm_memremap
Christoph Hellwig [Tue, 11 Aug 2015 03:07:07 +0000 (23:07 -0400)]
devres: add devm_memremap

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, btt: write and validate parent_uuid
Vishal Verma [Wed, 29 Jul 2015 20:58:09 +0000 (14:58 -0600)]
libnvdimm, btt: write and validate parent_uuid

When a BTT is instantiated on a namespace it must validate the namespace
uuid matches the 'parent_uuid' stored in the btt superblock. This
property enforces that changing the namespace UUID invalidates all
former BTT instances on that storage. For "IO namespaces" that don't
have a label or UUID, the parent_uuid is set to zero, and this
validation is skipped. For such cases, old BTTs have to be invalidated
by forcing the namespace to raw mode, and overwriting the BTT info
blocks.

Based on a patch by Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, btt: consolidate arena validation
Vishal Verma [Wed, 29 Jul 2015 20:58:08 +0000 (14:58 -0600)]
libnvdimm, btt: consolidate arena validation

Use arena_is_valid as a common routine for checking the validity of an
info block from both discover_arenas, and nd_btt_probe.

As a result, don't check for validity of the BTT's UUID, and lbasize.
The checksum in the BTT info block guarantees self-consistency, and when
we're called from nd_btt_probe, we don't have a valid uuid or lbasize
available to check against.

Also cleanup to return a bool instead of an int.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, btt: clean up internal interfaces
Vishal Verma [Wed, 29 Jul 2015 20:58:07 +0000 (14:58 -0600)]
libnvdimm, btt: clean up internal interfaces

Consolidate the parameters passed to arena_is_valid into just nd_btt,
and an info block to increase re-usability.

Similarly, btt_arena_write_layout doesn't need to be passed a uuid, as
it can be obtained from arena->nd_btt.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agopmem: convert to generic memremap
Dan Williams [Wed, 12 Aug 2015 22:42:56 +0000 (18:42 -0400)]
pmem: convert to generic memremap

Kill arch_memremap_pmem() and just let the architecture specify the
flags to be passed to memremap().  Default to writethrough by default.

Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agovisorbus: switch from ioremap_cache to memremap
Dan Williams [Tue, 11 Aug 2015 03:07:06 +0000 (23:07 -0400)]
visorbus: switch from ioremap_cache to memremap

In preparation for deprecating ioremap_cache() convert its usage in
visorbus to memremap.

Cc: Benjamin Romer <benjamin.romer@unisys.com>
Cc: David Kershner <david.kershner@unisys.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoarch: introduce memremap()
Dan Williams [Tue, 11 Aug 2015 03:07:06 +0000 (23:07 -0400)]
arch: introduce memremap()

Existing users of ioremap_cache() are mapping memory that is known in
advance to not have i/o side effects.  These users are forced to cast
away the __iomem annotation, or otherwise neglect to fix the sparse
errors thrown when dereferencing pointers to this memory.  Provide
memremap() as a non __iomem annotated ioremap_*() in the case when
ioremap is otherwise a pointer to cacheable memory. Empirically,
ioremap_<cacheable-type>() call sites are seeking memory-like semantics
(e.g.  speculative reads, and prefetching permitted).

memremap() is a break from the ioremap implementation pattern of adding
a new memremap_<type>() for each mapping type and having silent
compatibility fall backs.  Instead, the implementation defines flags
that are passed to the central memremap() and if a mapping type is not
supported by an arch memremap returns NULL.

We introduce a memremap prototype as a trivial wrapper of
ioremap_cache() and ioremap_wt().  Later, once all ioremap_cache() and
ioremap_wt() usage has been removed from drivers we teach archs to
implement arch_memremap() with the ability to strictly enforce the
mapping type.

Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agocleanup IORESOURCE_CACHEABLE vs ioremap()
Dan Williams [Tue, 11 Aug 2015 03:07:06 +0000 (23:07 -0400)]
cleanup IORESOURCE_CACHEABLE vs ioremap()

Quoting Arnd:
    I was thinking the opposite approach and basically removing all uses
    of IORESOURCE_CACHEABLE from the kernel. There are only a handful of
    them.and we can probably replace them all with hardcoded
    ioremap_cached() calls in the cases they are actually useful.

All existing usages of IORESOURCE_CACHEABLE call ioremap() instead of
ioremap_nocache() if the resource is cacheable, however ioremap() is
uncached by default. Clearly none of the existing usages care about the
cacheability. Particularly devm_ioremap_resource() never worked as
advertised since it always fell back to plain ioremap().

Clean this up as the new direction we want is to convert
ioremap_<type>() usages to memremap(..., flags).

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoarch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
Dan Williams [Tue, 11 Aug 2015 03:07:05 +0000 (23:07 -0400)]
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead

Preparation for uniform definition of ioremap, ioremap_wc, ioremap_wt,
and ioremap_cache, tree-wide.

Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agomm: enhance region_is_ram() to region_intersects()
Dan Williams [Tue, 11 Aug 2015 03:07:05 +0000 (23:07 -0400)]
mm: enhance region_is_ram() to region_intersects()

region_is_ram() is used to prevent the establishment of aliased mappings
to physical "System RAM" with incompatible cache settings.  However, it
uses "-1" to indicate both "unknown" memory ranges (ranges not described
by platform firmware) and "mixed" ranges (where the parameters describe
a range that partially overlaps "System RAM").

Fix this up by explicitly tracking the "unknown" vs "mixed" resource
cases and returning REGION_INTERSECTS, REGION_MIXED, or REGION_DISJOINT.
This re-write also adds support for detecting when the requested region
completely eclipses all of a resource.  Note, the implementation treats
overlaps between "unknown" and the requested memory type as
REGION_INTERSECTS.

Finally, other memory types can be passed in by name, for now the only
usage "System RAM".

Suggested-by: Luis R. Rodriguez <mcgrof@suse.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agonvdimm: fix inline function return type warning
Randy Dunlap [Tue, 28 Jul 2015 19:27:01 +0000 (12:27 -0700)]
nvdimm: fix inline function return type warning

Fix multiple build warnings when CONFIG_BTT is not enabled:

In file included from ../drivers/nvdimm/bus.c:29:0:
../drivers/nvdimm/nd.h:169:15: warning: return type defaults to 'int' [-Wreturn-type]
 static inline nd_btt_probe(struct nd_namespace_common *ndns, void *drvdata)
               ^

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agonfit: Don't check _STA on NVDIMM devices
Linda Knippers [Wed, 22 Jul 2015 20:17:22 +0000 (16:17 -0400)]
nfit: Don't check _STA on NVDIMM devices

The _STA only applies to the root device, not the individual NVDIMMS,
so don't check here. NVDIMM device state flags are checked elsewhere.

Signed-off-by: Linda Knippers <linda.knippers@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, pmem: Change pmem physical sector size to PAGE_SIZE
Vishal Verma [Thu, 23 Jul 2015 17:58:48 +0000 (11:58 -0600)]
libnvdimm, pmem: Change pmem physical sector size to PAGE_SIZE

Based on a patch: c8fa317 brd: Request from fdisk 4k alignment by Boaz
Harrosh, allow fdisk to create properly aligned partitions for DAX. This
will also cause mkfs.ext4 to emit a warning if using a file system block
size of less than PAGE_SIZE.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Elliott, Robert <Elliott@hp.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Acked-by: Boaz Harrosh <boaz@plexistor.com>
Acked-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm: Add DSM support for Address Range Scrub commands
Vishal Verma [Thu, 9 Jul 2015 19:25:36 +0000 (13:25 -0600)]
libnvdimm: Add DSM support for Address Range Scrub commands

Add support for the three ARS DSM commands:
- Query ARS Capabilities - Queries the firmware to check if a given
  range supports scrub, and if so, which type (persistent vs. volatile)
- Start ARS - Starts a scrub for a given range/type
- Query ARS Status - Checks status of a previously started scrub, and
  provides the error logs if any.

  The commands are described by the example DSM spec at:
  http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf

Also add these commands to the nfit_test test framework, and return
canned data.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm: Update name of the ars_status_record mask field
Vishal Verma [Thu, 9 Jul 2015 19:25:35 +0000 (13:25 -0600)]
libnvdimm: Update name of the ars_status_record mask field

The spec suggests that this is a simple 'length' field, not a mask.
Update the name accordingly.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm, btt: sparse fix
Dan Williams [Sat, 11 Jul 2015 14:02:46 +0000 (10:02 -0400)]
libnvdimm, btt: sparse fix

Fix:
drivers/nvdimm/btt.c:635:29: warning: restricted __le64 degrades to integer

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoLinux 4.2-rc4
Linus Torvalds [Sun, 26 Jul 2015 19:26:21 +0000 (12:26 -0700)]
Linux 4.2-rc4

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Jul 2015 18:46:32 +0000 (11:46 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Thomas Gleixner:
 "A single fix for the intel cqm perf facility to prevent IPIs from
  interrupt context"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/cqm: Return cached counter value from IRQ context

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Jul 2015 18:14:04 +0000 (11:14 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "This update contains:

   - the manual revert of the SYSCALL32 changes which caused a
     regression

   - a fix for the MPX vma handling

   - three fixes for the ioremap 'is ram' checks.

   - PAT warning fixes

   - a trivial fix for the size calculation of TLB tracepoints

   - handle old EFI structures gracefully

  This also contains a PAT fix from Jan plus a revert thereof.  Toshi
  explained why the code is correct"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/pat: Revert 'Adjust default caching mode translation tables'
  x86/asm/entry/32: Revert 'Do not use R9 in SYSCALL32' commit
  x86/mm: Fix newly introduced printk format warnings
  mm: Fix bugs in region_is_ram()
  x86/mm: Remove region_is_ram() call from ioremap
  x86/mm: Move warning from __ioremap_check_ram() to the call site
  x86/mm/pat, drivers/media/ivtv: Move the PAT warning and replace WARN() with pr_warn()
  x86/mm/pat, drivers/infiniband/ipath: Replace WARN() with pr_warn()
  x86/mm/pat: Adjust default caching mode translation tables
  x86/fpu: Disable dependent CPU features on "noxsave"
  x86/mpx: Do not set ->vm_ops on MPX VMAs
  x86/mm: Add parenthesis for TLB tracepoint size calculation
  efi: Handle memory error structures produced based on old versions of standard

9 years agox86/mm/pat: Revert 'Adjust default caching mode translation tables'
Thomas Gleixner [Sun, 26 Jul 2015 08:27:37 +0000 (10:27 +0200)]
x86/mm/pat: Revert 'Adjust default caching mode translation tables'

Toshi explains:

"No, the default values need to be set to the fallback types,
 i.e. minimal supported mode.  For WC and WT, UC is the fallback type.

 When PAT is disabled, pat_init() does update the tables below to
 enable WT per the default BIOS setup.  However, when PAT is enabled,
 but CPU has PAT -errata, WT falls back to UC per the default values."

Revert: ca1fec58bc6a 'x86/mm/pat: Adjust default caching mode translation tables'
Requested-by: Toshi Kani <toshi.kani@hp.com>
Cc: Jan Beulich <jbeulich@suse.de>
Link: http://lkml.kernel.org/r/1437577776.3214.252.camel@hp.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoperf/x86/intel/cqm: Return cached counter value from IRQ context
Matt Fleming [Tue, 21 Jul 2015 14:55:09 +0000 (15:55 +0100)]
perf/x86/intel/cqm: Return cached counter value from IRQ context

Peter reported the following potential crash which I was able to
reproduce with his test program,

[  148.765788] ------------[ cut here ]------------
[  148.765796] WARNING: CPU: 34 PID: 2840 at kernel/smp.c:417 smp_call_function_many+0xb6/0x260()
[  148.765797] Modules linked in:
[  148.765800] CPU: 34 PID: 2840 Comm: perf Not tainted 4.2.0-rc1+ #4
[  148.765803]  ffffffff81cdc398 ffff88085f105950 ffffffff818bdfd5 0000000000000007
[  148.765805]  0000000000000000 ffff88085f105990 ffffffff810e413a 0000000000000000
[  148.765807]  ffffffff82301080 0000000000000022 ffffffff8107f640 ffffffff8107f640
[  148.765809] Call Trace:
[  148.765810]  <NMI>  [<ffffffff818bdfd5>] dump_stack+0x45/0x57
[  148.765818]  [<ffffffff810e413a>] warn_slowpath_common+0x8a/0xc0
[  148.765822]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765824]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765825]  [<ffffffff810e422a>] warn_slowpath_null+0x1a/0x20
[  148.765827]  [<ffffffff811613f6>] smp_call_function_many+0xb6/0x260
[  148.765829]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765831]  [<ffffffff81161748>] on_each_cpu_mask+0x28/0x60
[  148.765832]  [<ffffffff8107f6ef>] intel_cqm_event_count+0x7f/0xe0
[  148.765836]  [<ffffffff811cdd35>] perf_output_read+0x2a5/0x400
[  148.765839]  [<ffffffff811d2e5a>] perf_output_sample+0x31a/0x590
[  148.765840]  [<ffffffff811d333d>] ? perf_prepare_sample+0x26d/0x380
[  148.765841]  [<ffffffff811d3497>] perf_event_output+0x47/0x60
[  148.765843]  [<ffffffff811d36c5>] __perf_event_overflow+0x215/0x240
[  148.765844]  [<ffffffff811d4124>] perf_event_overflow+0x14/0x20
[  148.765847]  [<ffffffff8107e7f4>] intel_pmu_handle_irq+0x1d4/0x440
[  148.765849]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765853]  [<ffffffff81219bad>] ? vunmap_page_range+0x19d/0x2f0
[  148.765854]  [<ffffffff81219d11>] ? unmap_kernel_range_noflush+0x11/0x20
[  148.765859]  [<ffffffff814ce6fe>] ? ghes_copy_tofrom_phys+0x11e/0x2a0
[  148.765863]  [<ffffffff8109e5db>] ? native_apic_msr_write+0x2b/0x30
[  148.765865]  [<ffffffff8109e44d>] ? x2apic_send_IPI_self+0x1d/0x20
[  148.765869]  [<ffffffff81065135>] ? arch_irq_work_raise+0x35/0x40
[  148.765872]  [<ffffffff811c8d86>] ? irq_work_queue+0x66/0x80
[  148.765875]  [<ffffffff81075306>] perf_event_nmi_handler+0x26/0x40
[  148.765877]  [<ffffffff81063ed9>] nmi_handle+0x79/0x100
[  148.765879]  [<ffffffff81064422>] default_do_nmi+0x42/0x100
[  148.765880]  [<ffffffff81064563>] do_nmi+0x83/0xb0
[  148.765884]  [<ffffffff818c7c0f>] end_repeat_nmi+0x1e/0x2e
[  148.765886]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765888]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765890]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765891]  <<EOE>>  [<ffffffff8110ab66>] finish_task_switch+0x156/0x210
[  148.765898]  [<ffffffff818c1671>] __schedule+0x341/0x920
[  148.765899]  [<ffffffff818c1c87>] schedule+0x37/0x80
[  148.765903]  [<ffffffff810ae1af>] ? do_page_fault+0x2f/0x80
[  148.765905]  [<ffffffff818c1f4a>] schedule_user+0x1a/0x50
[  148.765907]  [<ffffffff818c666c>] retint_careful+0x14/0x32
[  148.765908] ---[ end trace e33ff2be78e14901 ]---

The CQM task events are not safe to be called from within interrupt
context because they require performing an IPI to read the counter value
on all sockets. And performing IPIs from within IRQ context is a
"no-no".

Make do with the last read counter value currently event in
event->count when we're invoked in this context.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Will Auld <will.auld@intel.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1437490509-15373-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoMerge tag 'usb-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 26 Jul 2015 03:11:12 +0000 (20:11 -0700)]
Merge tag 'usb-4.2-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here's a few USB and PHY fixes for 4.2-rc4.

  Nothing major, the shortlog has the full details.

  All of these have been in linux-next successfully"

* tag 'usb-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (21 commits)
  USB: OHCI: fix bad #define in ohci-tmio.c
  cdc-acm: Destroy acm_minors IDR on module exit
  usb-storage: Add ignore-device quirk for gm12u320 based usb mini projectors
  usb-storage: ignore ZTE MF 823 card reader in mode 0x1225
  USB: OHCI: Fix race between ED unlink and URB submission
  usb: core: lpm: set lpm_capable for root hub device
  xhci: do not report PLC when link is in internal resume state
  xhci: prevent bus_suspend if SS port resuming in phase 1
  xhci: report U3 when link is in resume state
  xhci: Calculate old endpoints correctly on device reset
  usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function
  xhci: Workaround to get D3 working in Intel xHCI
  xhci: call BIOS workaround to enable runtime suspend on Intel Braswell
  usb: dwc3: Reset the transfer resource index on SET_INTERFACE
  usb: gadget: udc: core: Fix argument of dma_map_single for IOMMU
  usb: gadget: mv_udc_core: fix phy_regs I/O memory leak
  usb: ulpi: ulpi_init should be executed in subsys_initcall
  phy: berlin-usb: fix divider for BG2
  phy: berlin-usb: fix divider for BG2CD
  phy/pxa: add HAS_IOMEM dependency
  ...

9 years agoMerge tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 26 Jul 2015 03:05:07 +0000 (20:05 -0700)]
Merge tag 'tty-4.2-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are a number of small serial and tty fixes for reported issues.

  All have been in linux-next successfully"

* tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()
  serial: core: Fix crashes while echoing when closing
  m32r: Add ioreadXX/iowriteXX big-endian mmio accessors
  Revert "serial: imx: initialized DMA w/o HW flow enabled"
  sc16is7xx: fix FIFO address of secondary UART
  sc16is7xx: fix Kconfig dependencies
  serial: etraxfs-uart: Fix release etraxfs_uart_ports
  tty/vt: Fix the memory leak in visual_init
  serial: amba-pl011: Fix devm_ioremap_resource return value check
  n_tty: signal and flush atomically

9 years agoMerge tag 'staging-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 26 Jul 2015 03:03:10 +0000 (20:03 -0700)]
Merge tag 'staging-4.2-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are a number of iio and staging driver fixes for reported issues
  for 4.2-rc4.

  All have been in linux-next for a while with no problems"

* tag 'staging-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (34 commits)
  iio:light:stk3310: make endianness independent of host
  iio:light:stk3310: move device register to end of probe
  iio: mma8452: use iio event type IIO_EV_TYPE_MAG
  iio: mcp320x: Fix NULL pointer dereference
  iio: adc: vf610: fix the adc register read fail issue
  iio: mlx96014: Replace offset sign
  iio: magnetometer: mmc35240: fix SET/RESET sequence
  iio: magnetometer: mmc35240: Fix SET/RESET mask
  iio: magnetometer: mmc35240: Fix crash in pm suspend
  iio:magnetometer:bmc150_magn: output intended variable
  iio:magnetometer:bmc150_magn: add regmap dependency
  staging: vt6656: check ieee80211_bss_conf bssid not NULL
  staging: vt6655: check ieee80211_bss_conf bssid not NULL
  iio: tmp006: Check channel info on write
  iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()
  iio:light:ltr501: fix regmap dependency
  iio:light:ltr501: fix variable in ltr501_init
  iio: sx9500: fix bug in compensation code
  iio: sx9500: rework error handling of raw readings
  iio: magnetometer: mmc35240: fix available sampling frequencies
  ...

9 years agoMerge tag 'char-misc-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 26 Jul 2015 02:50:59 +0000 (19:50 -0700)]
Merge tag 'char-misc-4.2-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some char and misc driver fixes for reported issues.

  One parport patch is reverted as it was incorrect, thanks to testing
  by the 0-day bot"

* tag 'char-misc-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  parport: Revert "parport: fix memory leak"
  mei: prevent unloading mei hw modules while the device is opened.
  misc: mic: scif bug fix for vmalloc_to_page crash
  parport: fix freeing freed memory
  parport: fix memory leak
  parport: fix error handling

9 years agoparport: Revert "parport: fix memory leak"
Sudip Mukherjee [Sat, 25 Jul 2015 07:49:40 +0000 (13:19 +0530)]
parport: Revert "parport: fix memory leak"

This reverts commit 23c405912b88 ("parport: fix memory leak")

par_dev->state was already being removed in parport_unregister_device().

Reported-by: Ying Huang <ying.huang@intel.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoMerge tag 'trace-v4.2-rc2-fix3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 25 Jul 2015 18:42:54 +0000 (11:42 -0700)]
Merge tag 'trace-v4.2-rc2-fix3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fix from Steven Rostedt:
 "Back in 3.16 the ftrace code was redesigned and cleaned up to remove
  the double iteration list (one for registered ftrace ops, and one for
  registered "global" ops), to just use one list.  That simplified the
  code but also broke the function tracing filtering on pid.

  This updates the code to handle the filtering again with the new
  logic"

* tag 'trace-v4.2-rc2-fix3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Fix breakage of set_ftrace_pid

9 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw...
Linus Torvalds [Sat, 25 Jul 2015 18:36:12 +0000 (11:36 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/djbw/nvdimm

Pull libnvdimm fix from Dan Williams:
 "A minor fix for the libnvdimm subsystem.

  This is not critical.  The problem can be worked around in userspace
  by putting the namespace temporarily into raw mode
  (ndctl_namespace_set_raw_mode() from libndctl), but that is awkward
  for management utilities.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm:
  libnvdimm: fix namespace seed creation

9 years agoMerge tag 'md/4.2-fixes' of git://neil.brown.name/md
Linus Torvalds [Sat, 25 Jul 2015 18:24:58 +0000 (11:24 -0700)]
Merge tag 'md/4.2-fixes' of git://neil.brown.name/md

Pull md fixes from Neil Brown:
 "Some md fixes for 4.2

  Several are tagged for -stable.
  A few aren't because they are not very, serious or because they are in
  the 'experimental' cluster code"

* tag 'md/4.2-fixes' of git://neil.brown.name/md:
  md/raid5: clear R5_NeedReplace when no longer needed.
  Fix read-balancing during node failure
  md-cluster: fix bitmap sub-offset in bitmap_read_sb
  md: Return error if request_module fails and returns positive value
  md: Skip cluster setup in case of error while reading bitmap
  md/raid1: fix test for 'was read error from last working device'.
  md: Skip cluster setup for dm-raid
  md: flush ->event_work before stopping array.
  md/raid10: always set reshape_safe when initializing reshape_position.
  md/raid5: avoid races when changing cache size.

9 years agoMerge tag 'for-linus-20150724' of git://git.infradead.org/linux-mtd
Linus Torvalds [Sat, 25 Jul 2015 18:19:38 +0000 (11:19 -0700)]
Merge tag 'for-linus-20150724' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 "Two trivial updates.  I meant to send these much earlier, but I've
  been preoccupied.

   - Add MAINTAINERS entry for diskonchip g3 driver

   - Fix an overlooked conflict in bitfield value assignments

  The latter update is a bit overdue, but there's no reason to wait any
  longer"

* tag 'for-linus-20150724' of git://git.infradead.org/linux-mtd:
  mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict
  MAINTAINERS: mtd: docg3: add docg3 maintainer

9 years agolibnvdimm: fix namespace seed creation
Dan Williams [Sat, 25 Jul 2015 03:42:34 +0000 (23:42 -0400)]
libnvdimm: fix namespace seed creation

A new BLK namespace "seed" device is created whenever the current seed
is successfully probed.  However, if that namespace is assigned to a BTT
it may never directly experience a successful probe as it is a
subordinate device to a BTT configuration.

The effect of the current code is that no new namespaces can be
instantiated, after the seed namespace, to consume available BLK DPA
capacity.  Fix this by treating a successful BTT probe event as a
successful probe event for the backing namespace.

Reported-by: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 25 Jul 2015 00:00:04 +0000 (17:00 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Four smaller fixes for the current series.  This contains:

   - A fix for clones of discard bio's, that can cause data corruption.
     From Martin.

   - A fix for null_blk, where in certain queue modes it could access a
     request after it had been freed.  From Mike Krinkin.

   - An error handling leak fix for blkcg, from Tejun.

   - Also from Tejun, export of the functions that a file system needs
     to implement cgroup writeback support"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Do a full clone when splitting discard bios
  block: export bio_associate_*() and wbc_account_io()
  blkcg: fix gendisk reference leak in blkg_conf_prep()
  null_blk: fix use-after-free problem

9 years agoMerge branch 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 24 Jul 2015 23:54:59 +0000 (16:54 -0700)]
Merge branch 'for-4.2-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "A couple important fixes.

   - A block layer change which removed restriction on max transfer size
     led to silent data corruption on some devices.  A new quirk is
     added to restore the old size limit for the reported device.  If it
     gets reported on more devices, we might have to consider restoring
     the restriction for ATA devices by default.

   - There finally is a SSD which is confirmed to cause data corruption
     on TRIM regardless of which flavor is used.  A new quirk is added
     and the device is blacklisted

   - Other device-specific workarounds"

* 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: Do not blacklist M510DC
  libata: increase the timeout when setting transfer mode
  libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
  libata: force disable trim for SuperSSpeed S238
  libata: add ATA_HORKAGE_NOTRIM
  libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for HP 250GB SATA disk VB0250EAVER
  ata: pmp: add quirk for Marvell 4140 SATA PMP

9 years agoMerge tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc
Linus Torvalds [Fri, 24 Jul 2015 23:43:16 +0000 (16:43 -0700)]
Merge tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.2 rc4.

  Note, most of the changes are for the sdhci-esdhc-imx controller,
  which also required us to modify some related DTS files.  Those
  changes have been acked by the SoC maintainer.

  MMC core:
   - Fix a reference inbalance issue for power_ro_lock_show() sysfs handler

  MMC host:
   - omap_hsmmc: Fix IRQ errorhandling for CD, DTO, and CRC
   - sdhci: Prevent a kernel panic while using DMA
   - mtk-sd: Let it depend on HAS_DMA to prevent build errors
   - sdhci-esdhc: Make 8BIT bus work
   - sdhci-esdhc-imx: Fix some regressions for DT based platforms
   - sdhci-pxav3: Fix a regression for DT based platforms"

* tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sdhci-pxav3: fix platform_data is not initialized
  dts: mmc: fsl-imx-esdhc: remove fsl,cd-controller support
  mmc: sdhci-esdhc-imx: clear f_max in boarddata
  mmc: sdhci-esdhc-imx: remove duplicated dts parsing
  mmc: sdhci: make max-frequency property in device tree work
  mmc: sdhci-esdhc-imx: move all non dt probe code into one function
  mmc: sdhci-esdhc-imx: fix cd regression for dt platform
  dts: imx7: fix sd card gpio polarity specified in device tree
  dts: imx25: fix sd card gpio polarity specified in device tree
  dts: imx6: fix sd card gpio polarity specified in device tree
  dts: imx53: fix sd card gpio polarity specified in device tree
  dts: imx51: fix sd card gpio polarity specified in device tree
  mmc: sdhci-esdhc: Make 8BIT bus work
  mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()
  mmc: MMC_MTK should depend on HAS_DMA
  mmc: sdhci check parameters before call dma_free_coherent
  mmc: omap_hsmmc: Handle BADA, DEB and CEB interrupts
  mmc: omap_hsmmc: Fix DTO and DCRC handling

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 24 Jul 2015 23:33:11 +0000 (16:33 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "A fix for the warnings/oops when handling HID devices with "unnamed"
  LEDs and couple of other driver fixups""

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: goodix - fix touch coordinates on WinBook TW100 and TW700
  Input: LEDs - skip unnamed LEDs
  Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen
  Input: elantech - force resolution of 31 u/mm
  Input: zforce - don't overwrite the stack

9 years agoMerge tag 'regulator-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 24 Jul 2015 20:14:06 +0000 (13:14 -0700)]
Merge tag 'regulator-fix-v4.2-rc3' of git://git./linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "As well as some driver specific fixes there's several fixes here for
  the core support for regulators supplying other regulators fixing both
  an issue with ACPI support (which had never been tested before) and
  some error handling and device removal issues that Javier noticed"

* tag 'regulator-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: core: Fix memory leak in regulator_resolve_supply()
  regulator: core: Increase refcount for regulator supply's module
  regulator: core: Handle full constraints systems when resolving supplies
  regulator: 88pm800: fix LDO vsel_mask value
  regulator: max8973: Fix up control flag option for bias control
  regulator: s2mps11: Fix GPIO suspend enable shift wrapping bug

9 years agoMerge tag 'spi-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Fri, 24 Jul 2015 20:13:28 +0000 (13:13 -0700)]
Merge tag 'spi-fix-v4.2-rc3' of git://git./linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A small collection of pretty much unremarkable driver specific fixes
  here plus the addition of a new device ID to spidev which requires no
  other code changes"

* tag 'spi-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: imx: Fix small DMA transfers
  spi: zynq: missing break statement
  spi: SPI_ZYNQMP_GQSPI should depend on HAS_DMA
  spi: spidev: add compatible value for LTC2488
  spi: img-spfi: fix support for speeds up to 1/4th input clock

9 years agoMerge tag 'sound-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 24 Jul 2015 19:50:19 +0000 (12:50 -0700)]
Merge tag 'sound-4.2-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This has been a calm week again: one minor lockdep fix for PCM core,
  and the most of the rest are HD-audio quirks and fixups for various
  chips and machines"

* tag 'sound-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add headset mic pin quirk for a Dell device
  ALSA: hda - remove one pin from ALC292_STANDARD_PINS
  ALSA: hda - Add new GPU codec ID 0x10de007d to snd-hda
  ALSA: hda: add new AMD PCI IDs with proper driver caps
  ALSA: hda - Fix Skylake codec timeout
  ALSA: hda - Add headset mic support for Acer Aspire V5-573G
  ALSA: sparc: Add missing kfree in error path
  ALSA: pcm: Fix lockdep warning with nonatomic PCM ops

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Fri, 24 Jul 2015 19:44:24 +0000 (12:44 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - kernel crash fixes for multitouch and wacom drivers, by Brent Adam
   and Dan Carpenter

 - cp2112 data packet race condition corruption fix, by Antonio Borneo

 - a few new device IDs for wacom and microsoft drivers

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: cp2112: fix to force single data-report reply
  HID: wacom: Enable pad device for older Bamboo Touch tablets
  HID: multitouch: Fix fields from pen report ID being interpreted for multitouch
  HID: microsoft: Add quirk for MS Surface Type/Touch cover
  HID: wacom: NULL dereferences on error in probe()

9 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 24 Jul 2015 19:37:29 +0000 (12:37 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Aome amdgpu, one i915, one ttm and one hlcdc, nothing too scary.

  All seems fine for about this time"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/ttm: recognize ARM64 arch in ioprot handler
  drm/amdgpu/cz/dpm: properly report UVD and VCE clock levels
  drm/amdgpu/cz: implement voltage validation properly
  drm/amdgpu: add VCE harvesting instance query
  drm/amdgpu: implement VCE 3.0 harvesting support (v4)
  drm/amdgpu/dce10: Re-set VBLANK interrupt state when enabling a CRTC
  drm/amdgpu/dce11: Re-set VBLANK interrupt state when enabling a CRTC
  drm: Stop resetting connector state to unknown
  drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls
  drm: atmel-hlcdc: fix vblank initial state

9 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Fri, 24 Jul 2015 19:31:30 +0000 (12:31 -0700)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile

Pull arch/tile bugfix from Chris Metcalf:
 "This fixes a bug in freeing the initramfs memory"

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: use free_bootmem_late() for initrd

9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 24 Jul 2015 19:23:06 +0000 (12:23 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Everything related to the new quirks and memory type features:

   - small improvements to the quirks API

   - extending one of the quirks from just AMD to Intel as well, because
     4.2 can show the same problem with problematic firmware on Intel
     too"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: rename quirk constants to KVM_X86_QUIRK_*
  KVM: vmx: obey KVM_QUIRK_CD_NW_CLEARED
  KVM: x86: introduce kvm_check_has_quirk
  KVM: MTRR: simplify kvm_mtrr_get_guest_memory_type
  KVM: MTRR: fix memory type handling if MTRR is completely disabled

9 years agoftrace: Fix breakage of set_ftrace_pid
Steven Rostedt (Red Hat) [Fri, 24 Jul 2015 14:38:12 +0000 (10:38 -0400)]
ftrace: Fix breakage of set_ftrace_pid

Commit 4104d326b670 ("ftrace: Remove global function list and call function
directly") simplified the ftrace code by removing the global_ops list with a
new design. But this cleanup also broke the filtering of PIDs that are added
to the set_ftrace_pid file.

Add back the proper hooks to have pid filtering working once again.

Cc: stable@vger.kernel.org # 3.16+
Reported-by: Matt Fleming <matt@console-pimps.org>
Reported-by: Richard Weinberger <richard.weinberger@gmail.com>
Tested-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agoInput: goodix - fix touch coordinates on WinBook TW100 and TW700
Bastien Nocera [Fri, 24 Jul 2015 16:08:53 +0000 (09:08 -0700)]
Input: goodix - fix touch coordinates on WinBook TW100 and TW700

The touchscreen on the WinBook TW100 and TW700 don't match the default
display, with 0,0 touches being reported when touching at the bottom
right of the screen.

  1280,800             0,800
         +-------------+
         |             |
         |             |
         |             |
         +-------------+
    1280,0             0,0

It's unfortunately impossible to detect this problem with data from the
DSDT, or other auxiliary metadata, so fallback to quirking this specific
model of tablet instead.

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agoInput: LEDs - skip unnamed LEDs
Dmitry Torokhov [Wed, 22 Jul 2015 21:56:39 +0000 (14:56 -0700)]
Input: LEDs - skip unnamed LEDs

Devices may declare more LEDs than what is known to input-leds
(HID does this for some devices). Instead of showing ugly warnings
on connect and, even worse, oopsing on disconnect, let's simply
ignore LEDs that are not known to us.

Reported-and-tested-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agoMerge remote-tracking branches 'spi/fix/gqspi', 'spi/fix/imx', 'spi/fix/mg-spfi'...
Mark Brown [Fri, 24 Jul 2015 15:19:50 +0000 (16:19 +0100)]
Merge remote-tracking branches 'spi/fix/gqspi', 'spi/fix/imx', 'spi/fix/mg-spfi' and 'spi/fix/spidev' into spi-linus

9 years agoMerge remote-tracking branches 'regulator/fix/88pm800', 'regulator/fix/max8973',...
Mark Brown [Fri, 24 Jul 2015 15:19:25 +0000 (16:19 +0100)]
Merge remote-tracking branches 'regulator/fix/88pm800', 'regulator/fix/max8973', 'regulator/fix/s2mps11' and 'regulator/fix/supply' into regulator-linus

9 years agoMerge remote-tracking branch 'regulator/fix/core' into regulator-linus
Mark Brown [Fri, 24 Jul 2015 15:19:25 +0000 (16:19 +0100)]
Merge remote-tracking branch 'regulator/fix/core' into regulator-linus

9 years agospi: imx: Fix small DMA transfers
Sascha Hauer [Fri, 24 Jul 2015 13:01:08 +0000 (15:01 +0200)]
spi: imx: Fix small DMA transfers

DMA transfers must be greater than the watermark level size. spi_imx->rx_wml
and spi_imx->tx_wml contain the watermark level in 32bit words whereas struct
spi_transfer contains the transfer len in bytes. Fix the check if DMA is
possible for a transfer accordingly. This fixes transfers with sizes between
33 and 128 bytes for which previously was claimed that DMA is possible.

Fixes: f62caccd12c17e4 (spi: spi-imx: add DMA support)
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
9 years agox86/asm/entry/32: Revert 'Do not use R9 in SYSCALL32' commit
Denys Vlasenko [Fri, 24 Jul 2015 12:16:43 +0000 (14:16 +0200)]
x86/asm/entry/32: Revert 'Do not use R9 in SYSCALL32' commit

This change reverts most of commit 53e9accf0f 'Do not use R9 in
SYSCALL32'. I don't yet understand how, but code in that commit
sometimes fails to preserve EBP.

See https://bugzilla.kernel.org/show_bug.cgi?id=101061
"Problems while executing 32-bit code on AMD64"

Reported-and-tested-by: Krzysztof A. Sobiecki <sobkas@gmail.com>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Will Drewry <wad@chromium.org>
Cc: Kees Cook <keescook@chromium.org>
CC: x86@kernel.org
Link: http://lkml.kernel.org/r/1437740203-11552-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agox86/mm: Fix newly introduced printk format warnings
Thomas Gleixner [Fri, 24 Jul 2015 14:13:43 +0000 (16:13 +0200)]
x86/mm: Fix newly introduced printk format warnings

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agommc: sdhci-pxav3: fix platform_data is not initialized
Jingju Hou [Thu, 23 Jul 2015 09:56:23 +0000 (17:56 +0800)]
mmc: sdhci-pxav3: fix platform_data is not initialized

pdev->dev.platform_data is not initialized if match is true in function
sdhci_pxav3_probe. Just local variable pdata is assigned the return value
from function pxav3_get_mmc_pdata().

static int sdhci_pxav3_probe(struct platform_device *pdev) {

    struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
    ...
    if (match) {
ret = mmc_of_parse(host->mmc);
if (ret)
goto err_of_parse;
sdhci_get_of_property(pdev);
pdata = pxav3_get_mmc_pdata(dev);
     }
     ...
}

Signed-off-by: Jingju Hou <houjingj@marvell.com>
Fixes: b650352dd3df("mmc: sdhci-pxa: Add device tree support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: mmc: fsl-imx-esdhc: remove fsl,cd-controller support
Dong Aisheng [Wed, 22 Jul 2015 12:53:10 +0000 (20:53 +0800)]
dts: mmc: fsl-imx-esdhc: remove fsl,cd-controller support

It's not supported by driver anymore after using runtime pm
and there's no user of it, so delete it now.

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci-esdhc-imx: clear f_max in boarddata
Dong Aisheng [Wed, 22 Jul 2015 12:53:09 +0000 (20:53 +0800)]
mmc: sdhci-esdhc-imx: clear f_max in boarddata

After commit 8d86e4fcccf6 ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
it's not used anymore.

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci-esdhc-imx: remove duplicated dts parsing
Dong Aisheng [Wed, 22 Jul 2015 12:53:08 +0000 (20:53 +0800)]
mmc: sdhci-esdhc-imx: remove duplicated dts parsing

After commit 8d86e4fcccf6 ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
we do not need those duplicated parsing anymore.

Note: fsl,cd-controller is also deleted due to the driver does
not support controller card detection anymore after switch to runtime pm.
And there's no user of it right now in device tree.

wp-gpios is kept because we're still support fsl,wp-controller,
so we need a way to check if it's gpio wp or controller wp.

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci: make max-frequency property in device tree work
Dong Aisheng [Wed, 22 Jul 2015 12:53:07 +0000 (20:53 +0800)]
mmc: sdhci: make max-frequency property in device tree work

Device tree provides option to specify the max freqency with property
"max-frequency" in dts and common parse function mmc_of_parse() will
parse it and use this value to set host->f_max to tell the MMC core
the maxinum frequency the host works.

However, current sdhci driver will finally overwrite this value with
host->max_clk regardless of the max-frequency property.

This patch makes sure not overwrite the max-frequency set from device
tree and do basic sanity check.

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci-esdhc-imx: move all non dt probe code into one function
Dong Aisheng [Wed, 22 Jul 2015 12:53:06 +0000 (20:53 +0800)]
mmc: sdhci-esdhc-imx: move all non dt probe code into one function

This is an incremental fix of commit
e62bd351b("mmc: sdhci-esdhc-imx: Do not break platform data boards").

After commit 8d86e4fcccf6 ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
we do not need to run the check of boarddata->wp_type/cd_type/max_bus_width
again for dt platform since those are already handled by mmc_of_parse().

Current code only exclude the checking of wp_type for dt platform which
does not make sense.

This patch moves all non dt probe code into one function.
Besides, since we only support SD3.0/eMMC HS200 for dt platform, the
support_vsel checking and ultra high speed pinctrl state are also merged
into sdhci_esdhc_imx_probe_dt.

Then we have two separately probe function for dt and non dt type.
This can make the driver probe more clearly.

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci-esdhc-imx: fix cd regression for dt platform
Dong Aisheng [Wed, 22 Jul 2015 12:53:05 +0000 (20:53 +0800)]
mmc: sdhci-esdhc-imx: fix cd regression for dt platform

Current card detect probe process is that when driver finds a valid
ESDHC_CD_GPIO, it will clear the quirk SDHCI_QUIRK_BROKEN_CARD_DETECTION
which is set by default for all esdhc/usdhc controllers.
Then host driver will know there's a valid card detect function.

Commit 8d86e4fcccf6 ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()")
breaks GPIO CD function for dt platform that it will return directly
when find ESDHC_CD_GPIO for dt platform which result in the later wrongly
to keep SDHCI_QUIRK_BROKEN_CARD_DETECTION for all dt platforms.
Then MMC_CAP_NEEDS_POLL will be used instead even there's a valid
GPIO card detect.

This patch adds back this function and follows the original approach to
clear the quirk if find an valid CD GPIO for dt platforms.

Fixes: 8d86e4fcccf6 ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()")
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: imx7: fix sd card gpio polarity specified in device tree
Dong Aisheng [Wed, 22 Jul 2015 12:53:04 +0000 (20:53 +0800)]
dts: imx7: fix sd card gpio polarity specified in device tree

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: imx25: fix sd card gpio polarity specified in device tree
Dong Aisheng [Wed, 22 Jul 2015 12:53:03 +0000 (20:53 +0800)]
dts: imx25: fix sd card gpio polarity specified in device tree

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: imx6: fix sd card gpio polarity specified in device tree
Dong Aisheng [Wed, 22 Jul 2015 12:53:02 +0000 (20:53 +0800)]
dts: imx6: fix sd card gpio polarity specified in device tree

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: imx53: fix sd card gpio polarity specified in device tree
Dong Aisheng [Wed, 22 Jul 2015 12:53:01 +0000 (20:53 +0800)]
dts: imx53: fix sd card gpio polarity specified in device tree

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agodts: imx51: fix sd card gpio polarity specified in device tree
Dong Aisheng [Wed, 22 Jul 2015 12:53:00 +0000 (20:53 +0800)]
dts: imx51: fix sd card gpio polarity specified in device tree

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci-esdhc: Make 8BIT bus work
Joakim Tjernlund [Wed, 22 Jul 2015 14:44:26 +0000 (16:44 +0200)]
mmc: sdhci-esdhc: Make 8BIT bus work

Support for 8BIT bus with was added some time ago to sdhci-esdhc but
then missed to remove the 8BIT from the reserved bit mask which made
8BIT non functional.

Fixes: 66b50a00992d ("mmc: esdhc: Add support for 8-bit bus width and..")
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: block: Add missing mmc_blk_put() in power_ro_lock_show()
Tomas Winkler [Thu, 16 Jul 2015 13:50:45 +0000 (15:50 +0200)]
mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()

Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
let's add it.

Fixes: add710eaa886 ("mmc: boot partition ro lock support")
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: MMC_MTK should depend on HAS_DMA
Geert Uytterhoeven [Fri, 26 Jun 2015 12:09:26 +0000 (14:09 +0200)]
mmc: MMC_MTK should depend on HAS_DMA

If NO_DMA=y:

    ERROR: "dma_alloc_coherent" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_unmap_sg" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_map_sg" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_free_coherent" [drivers/mmc/host/mtk-sd.ko] undefined!

Add a dependency on HAS_DMA to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: sdhci check parameters before call dma_free_coherent
Peng Fan [Mon, 22 Jun 2015 03:41:23 +0000 (11:41 +0800)]
mmc: sdhci check parameters before call dma_free_coherent

We should not call dma_free_coherent if host->adma_table is NULL,
otherwise may trigger panic.

Fixes: d1e49f77d7c7 ("mmc: sdhci: convert ADMA descriptors to a...")
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: omap_hsmmc: Handle BADA, DEB and CEB interrupts
Vignesh R [Tue, 16 Jun 2015 10:37:18 +0000 (16:07 +0530)]
mmc: omap_hsmmc: Handle BADA, DEB and CEB interrupts

Sometimes BADA, DEB or CEB error interrupts occur when sd card is
unplugged during data transfer. These interrupts are currently ignored
by the interrupt handler. But, this results in card not being
recognised on subsequent insertion. This is because mmcqd is waiting
forever for the data transfer(for which error occurred) to complete.
Fix this, by reporting BADA, DEB, CEB errors to mmc-core as -EILSEQ, so
that the core can do appropriate handling.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agommc: omap_hsmmc: Fix DTO and DCRC handling
Kishon Vijay Abraham I [Tue, 16 Jun 2015 10:37:17 +0000 (16:07 +0530)]
mmc: omap_hsmmc: Fix DTO and DCRC handling

DTO/DCRC errors were not being informed to the mmc core since
commit ae4bf788ee9b ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ"). This commit made sure 'end_trans' is never set on DTO/DCRC
errors. This is because after this commit 'host->data' is checked after
it has been cleared to NULL by omap_hsmmc_dma_cleanup().

Because 'end_trans' is never set, omap_hsmmc_xfer_done() is never invoked
making core layer not to be aware of DTO/DCRC errors. Because of this
any command invoked after DTO/DCRC error leads to a hang.

Fix this by checking for 'host->data' before it is actually cleared.

Fixes: ae4bf788ee9b ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ")

CC: stable@vger.kernel.org
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
9 years agoMerge tag 'drm-atmel-hlcdc/fixes-for-4.2' of https://github.com/bbrezillon/linux...
Dave Airlie [Fri, 24 Jul 2015 04:27:44 +0000 (14:27 +1000)]
Merge tag 'drm-atmel-hlcdc/fixes-for-4.2' of https://github.com/bbrezillon/linux-at91 into drm-fixes

single hlcdc fix.

* tag 'drm-atmel-hlcdc/fixes-for-4.2' of https://github.com/bbrezillon/linux-at91:
  drm: atmel-hlcdc: fix vblank initial state

9 years agomd/raid5: clear R5_NeedReplace when no longer needed.
NeilBrown [Fri, 17 Jul 2015 03:26:23 +0000 (13:26 +1000)]
md/raid5: clear R5_NeedReplace when no longer needed.

This flag is currently never cleared, which can in rare cases
trigger a warn-on if it is still set but the block isn't
InSync.

So clear it when it isn't need, which includes if the replacement
device has failed.

Signed-off-by: NeilBrown <neilb@suse.com>
9 years agoFix read-balancing during node failure
Goldwyn Rodrigues [Wed, 24 Jun 2015 14:30:32 +0000 (09:30 -0500)]
Fix read-balancing during node failure

During a node failure, We need to suspend read balancing so that the
reads are directed to the first device and stale data is not read.
Suspending writes is not required because these would be recorded and
synced eventually.

A new flag MD_CLUSTER_SUSPEND_READ_BALANCING is set in recover_prep().
area_resyncing() will respond true for the entire devices if this
flag is set and the request type is READ. The flag is cleared
in recover_done().

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reported-By: David Teigland <teigland@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd-cluster: fix bitmap sub-offset in bitmap_read_sb
Goldwyn Rodrigues [Wed, 1 Jul 2015 02:19:56 +0000 (12:19 +1000)]
md-cluster: fix bitmap sub-offset in bitmap_read_sb

bitmap_read_sb is modifying mddev->bitmap_info.offset. This works for
the first bitmap read. However, when multiple bitmaps need to be opened
by the same node, it ends up corrupting the offset. Fix it by using a
local variable.

Also, bitmap_read_sb is not required in bitmap_copy_from_slot since
it is called in bitmap_create. Remove bitmap_read_sb().

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd: Return error if request_module fails and returns positive value
Goldwyn Rodrigues [Wed, 22 Jul 2015 17:09:15 +0000 (12:09 -0500)]
md: Return error if request_module fails and returns positive value

request_module() can return 256 (process exited) in some cases,
which is not as specified in the documentation before the
request_module() definition. Convert the error to -ENOENT.

The positive error number results in bitmap_create() returning
a value that is meant to be an error but doesn't look like one,
so it is dereferenced as a point and causes a crash.

(not needed for stable as this is "experimental" code)
Fixes: edb39c9deda8 ("Introduce md_cluster_operations to handle cluster functions")
Signed-off-By: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd: Skip cluster setup in case of error while reading bitmap
Goldwyn Rodrigues [Wed, 22 Jul 2015 17:09:16 +0000 (12:09 -0500)]
md: Skip cluster setup in case of error while reading bitmap

If the bitmap read fails, the error code set is -EINVAL. However,
we don't check for errors and go ahead with cluster_setup.
Skip the cluster setup in case of error.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd/raid1: fix test for 'was read error from last working device'.
NeilBrown [Thu, 23 Jul 2015 23:22:16 +0000 (09:22 +1000)]
md/raid1: fix test for 'was read error from last working device'.

When we get a read error from the last working device, we don't
try to repair it, and don't fail the device.  We simple report a
read error to the caller.

However the current test for 'is this the last working device' is
wrong.
When there is only one fully working device, it assumes that a
non-faulty device is that device.  However a spare which is rebuilding
would be non-faulty but so not the only working device.

So change the test from "!Faulty" to "In_sync".  If ->degraded says
there is only one fully working device and this device is in_sync,
this must be the one.

This bug has existed since we allowed read_balance to read from
a recovering spare in v3.0

Reported-and-tested-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Fixes: 76073054c95b ("md/raid1: clean up read_balance.")
Cc: stable@vger.kernel.org (v3.0+)
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agoMerge tag 'topic/drm-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Fri, 24 Jul 2015 01:52:35 +0000 (11:52 +1000)]
Merge tag 'topic/drm-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel into drm-fixes

Regression fix for systemd getting confused about unknown connector state
after resume. Just stop setting the state to unknown, turned out to be a
silly idea anyway. What drivers imo really should do (and i915 still does
that) is forcing a full reprobe on resume to make sure connector changes
while suspended are caught. Most drivers seem to get this wrong. Otoh it
took us years to get fixes merged where some probe races resulted in
eating uevents, I guess userspace expectations for reliable hpd are just
really low :(

* tag 'topic/drm-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel:
  drm: Stop resetting connector state to unknown

9 years agoMerge tag 'drm-intel-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Fri, 24 Jul 2015 01:52:09 +0000 (11:52 +1000)]
Merge tag 'drm-intel-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel into drm-fixes

arb_timer kernel side fix from Chris.

* tag 'drm-intel-fixes-2015-07-23' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls

9 years agoMerge branch 'drm-fixes-4.2' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 24 Jul 2015 01:51:18 +0000 (11:51 +1000)]
Merge branch 'drm-fixes-4.2' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Some amdgpu fixes.

* 'drm-fixes-4.2' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu/cz/dpm: properly report UVD and VCE clock levels
  drm/amdgpu/cz: implement voltage validation properly
  drm/amdgpu: add VCE harvesting instance query
  drm/amdgpu: implement VCE 3.0 harvesting support (v4)
  drm/amdgpu/dce10: Re-set VBLANK interrupt state when enabling a CRTC
  drm/amdgpu/dce11: Re-set VBLANK interrupt state when enabling a CRTC

9 years agodrm/ttm: recognize ARM64 arch in ioprot handler
Alexandre Courbot [Wed, 1 Jul 2015 08:32:29 +0000 (17:32 +0900)]
drm/ttm: recognize ARM64 arch in ioprot handler

Return proper pgprot for ARM64. This is required for objects like
Nouveau fences to be mapped with expected coherency.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agotty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()
Peter Hurley [Mon, 13 Jul 2015 00:47:35 +0000 (20:47 -0400)]
tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()

Pasting text with gpm on a VC produced warning [1]. Reset task state
to TASK_RUNNING in the paste_selection() loop, if the loop did not
sleep.

[1]
WARNING: CPU: 6 PID: 1960 at /home/peter/src/kernels/mainline/kernel/sched/core.c:7286 __might_sleep+0x7f/0x90()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8151805e>] paste_selection+0x9e/0x1a0
Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c .....
CPU: 6 PID: 1960 Comm: gpm Not tainted 4.1.0-rc7+tty-xeon+debug #rc7+tty
Hardware name: Dell Inc. Precision WorkStation T5400  /0RW203, BIOS A11 04/30/2012
 ffffffff81c9c0a0 ffff8802b0fd3ac8 ffffffff8185778a 0000000000000001
 ffff8802b0fd3b18 ffff8802b0fd3b08 ffffffff8108039a ffffffff82ae8510
 ffffffff81c9ce00 0000000000000015 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff8185778a>] dump_stack+0x4f/0x7b
 [<ffffffff8108039a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff81080416>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff810ddced>] ? __lock_acquire+0xe2d/0x13a0
 [<ffffffff8151805e>] ? paste_selection+0x9e/0x1a0
 [<ffffffff8151805e>] ? paste_selection+0x9e/0x1a0
 [<ffffffff810ad4ff>] __might_sleep+0x7f/0x90
 [<ffffffff8185f76a>] down_read+0x2a/0xa0
 [<ffffffff810bb1d8>] ? sched_clock_cpu+0xb8/0xe0
 [<ffffffff8150d1dc>] n_tty_receive_buf_common+0x4c/0xba0
 [<ffffffff810dc875>] ? mark_held_locks+0x75/0xa0
 [<ffffffff81861c95>] ? _raw_spin_unlock_irqrestore+0x65/0x80
 [<ffffffff810b49a1>] ? get_parent_ip+0x11/0x50
 [<ffffffff8150dd44>] n_tty_receive_buf2+0x14/0x20
 [<ffffffff81518117>] paste_selection+0x157/0x1a0
 [<ffffffff810b77b0>] ? wake_up_state+0x20/0x20
 [<ffffffff815203f8>] tioclinux+0xb8/0x2c0
 [<ffffffff81515bfe>] vt_ioctl+0xaee/0x11a0
 [<ffffffff810baf75>] ? sched_clock_local+0x25/0x90
 [<ffffffff810bbe11>] ? vtime_account_user+0x91/0xa0
 [<ffffffff8150810c>] tty_ioctl+0x20c/0xe20
 [<ffffffff810bbe11>] ? vtime_account_user+0x91/0xa0
 [<ffffffff810b49a1>] ? get_parent_ip+0x11/0x50
 [<ffffffff810b4a69>] ? preempt_count_sub+0x49/0x50
 [<ffffffff811ab71c>] ? context_tracking_exit+0x5c/0x290
 [<ffffffff811ab71c>] ? context_tracking_exit+0x5c/0x290
 [<ffffffff81248b98>] do_vfs_ioctl+0x318/0x570
 [<ffffffff810dca8d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff810dc9b5>] ? trace_hardirqs_on_caller+0x115/0x1e0
 [<ffffffff81254acc>] ? __fget_light+0x6c/0xa0
 [<ffffffff81248e71>] SyS_ioctl+0x81/0xa0
 [<ffffffff81862832>] system_call_fastpath+0x16/0x7a

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoserial: core: Fix crashes while echoing when closing
Peter Hurley [Mon, 13 Jul 2015 01:05:26 +0000 (21:05 -0400)]
serial: core: Fix crashes while echoing when closing

While closing, new rx data may be received after the input buffers
have been flushed but before stop_rx() halts receiving [1]. The
new data might not be processed by flush_to_ldisc() until after
uart_shutdown() and normal input processing is re-enabled (ie.,
tty->closing = 0). The race is outlined below:

CPU 0                         | CPU 1
                              |
uart_close()                  |
   tty_port_close_start()     |
      tty->closing = 1        |
      tty_ldisc_flush()       |
                              | => IRQ
                              |   while (LSR & data ready)
                              |      uart_insert_char()
                              |   tty_flip_buffer_push()
                              | <= EOI
   stop_rx()                  |   .
   uart_shutdown()            |   .
      free xmit.buf           |   .
   tty_port_tty_set(NULL)     |   .
   tty->closing = 0           |   .
                              | flush_to_ldisc()
                              |   n_tty_receive_buf_common()
                              |      __receive_buf()
                              |         ...
                              |         commit_echoes()
                              |            uart_flush_chars()
                              |               __uart_start()
                              | ** OOPS on port.tty deref **
   tty_ldisc_flush()          |

Input processing must be prevented from echoing (tty->closing = 1)
until _after_ the input buffers have been flushed again at the end
of uart_close().

[1] In fact, some input may actually be buffered _after_ stop_rx()
since the rx interrupt may have already triggered but not yet been
handled when stop_rx() disables rx interrupts.

Fixes: 2e758910832d ("serial: core: Flush ldisc after dropping port
mutex in uart_close()")
Reported-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agom32r: Add ioreadXX/iowriteXX big-endian mmio accessors
Peter Hurley [Thu, 9 Jul 2015 03:10:06 +0000 (23:10 -0400)]
m32r: Add ioreadXX/iowriteXX big-endian mmio accessors

commit c627f2ceb692 ("serial: 8250: Add support for big-endian MMIO accesses")
added support for 32-bit big-endian mmio to the 8250 driver. Support for
ioreadXXbe/iowriteXXbe io accessors was missing from m32r arch, which caused
build errors.

Add trivial macro mmio accessors.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoRevert "serial: imx: initialized DMA w/o HW flow enabled"
David Jander [Fri, 26 Jun 2015 06:11:30 +0000 (08:11 +0200)]
Revert "serial: imx: initialized DMA w/o HW flow enabled"

This reverts commit 068500e08dc87ea9a453cc4a500cf3ab28d0f936.

According to some tests, SDMA support is broken at least for i.MX6 without
HW flow control. Different forms of data-corruption appear either with
the ROM firmware for the SDMA controller as well as when loading Freescale
provided SDMA firmware versions 1.1 or 3.1.

Signed-off-by: David Jander <david@protonic.nl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agosc16is7xx: fix FIFO address of secondary UART
Bo Svangård [Sat, 13 Jun 2015 11:40:20 +0000 (13:40 +0200)]
sc16is7xx: fix FIFO address of secondary UART

Calls to regmap_raw_read/write needed register rewrite in a
similar way as function calls to regmap_read/write already had.
This enables reading/writing the serial datastream to the device.

Signed-off-by: Bo Svangård <bo.svangard@embeddedart.se>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agosc16is7xx: fix Kconfig dependencies
Jakub Kicinski [Wed, 1 Jul 2015 12:19:52 +0000 (14:19 +0200)]
sc16is7xx: fix Kconfig dependencies

When I2C=m and SPI=y or-ing them will produce =y while
what we need is the lower bound, i.e. =m.  Fortunately
SPI is a boolean so we need to handle only one special
case.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>