GitHub/LineageOS/android_kernel_motorola_exynos9610.git
17 years agofallout from Auke's pci ->revision patch
Al Viro [Sun, 15 Jul 2007 20:01:02 +0000 (21:01 +0100)]
fallout from Auke's pci ->revision patch

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoax88796: dev_dbg() wants device, not platform device
Al Viro [Sun, 15 Jul 2007 20:00:51 +0000 (21:00 +0100)]
ax88796: dev_dbg() wants device, not platform device

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agopass -msize-long to sparse on s390
Al Viro [Sun, 15 Jul 2007 20:00:41 +0000 (21:00 +0100)]
pass -msize-long to sparse on s390

s390 is the only 32bit with unsigned long for size_t (usual for those
is unsigned int).  Tell sparse...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofrv: missing __clear_user()
Al Viro [Sun, 15 Jul 2007 20:00:31 +0000 (21:00 +0100)]
frv: missing __clear_user()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agozd1211rw: too early inclusion of asm/unaligned.h
Al Viro [Sun, 15 Jul 2007 20:00:21 +0000 (21:00 +0100)]
zd1211rw: too early inclusion of asm/unaligned.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agofix return type of skb_checksum_complete()
Al Viro [Sun, 15 Jul 2007 20:00:11 +0000 (21:00 +0100)]
fix return type of skb_checksum_complete()

It returns __sum16, not unsigned int

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoPDA_POWER depends on having request_irq()
Al Viro [Sun, 15 Jul 2007 20:00:01 +0000 (21:00 +0100)]
PDA_POWER depends on having request_irq()

... so all proud owners of s390-based PDAs will have to live without that one

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoieee1394: forgotten dereference...
Al Viro [Sun, 15 Jul 2007 19:59:51 +0000 (20:59 +0100)]
ieee1394: forgotten dereference...

Going through the string and waiting for _pointer_ to become '\0'
is not what the authors meant...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Ben Collins <ben.collins@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agothe wrong variable checked after request_irq()
Al Viro [Sun, 15 Jul 2007 19:59:41 +0000 (20:59 +0100)]
the wrong variable checked after request_irq()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agowrong order of arguments of ->readdir()
Al Viro [Sun, 15 Jul 2007 19:59:31 +0000 (20:59 +0100)]
wrong order of arguments of ->readdir()

Shows how many people are testing coda - the bug had been there for 5 years
and results of stepping on it are not subtle.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agominimal fixes for drivers/usb/gadget/m66592-udc.c
Al Viro [Sun, 15 Jul 2007 19:59:22 +0000 (20:59 +0100)]
minimal fixes for drivers/usb/gadget/m66592-udc.c

still looks racy (and definitely leaks)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoRevert "SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel"
Linus Torvalds [Fri, 13 Jul 2007 23:53:18 +0000 (16:53 -0700)]
Revert "SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel"

This reverts commit 9faf65fb6ee2b4e08325ba2d69e5ccf0c46453d0.

It bit people like Michal Piotrowski:

  "My system is too secure, I can not login :)"

because it changed how CONFIG_NETLABEL worked, and broke older SElinux
policies.

As a result, quoth James Morris:

  "Can you please revert this patch?

   We thought it only affected people running MLS, but it will affect others.

   Sorry for the hassle."

Cc: James Morris <jmorris@namei.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Paul Moore <paul.moore@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge git://git.linux-nfs.org/pub/linux/nfs-2.6
Linus Torvalds [Fri, 13 Jul 2007 23:46:18 +0000 (16:46 -0700)]
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

* git://git.linux-nfs.org/pub/linux/nfs-2.6: (122 commits)
  sunrpc: drop BKL around wrap and unwrap
  NFSv4: Make sure unlock is really an unlock when cancelling a lock
  NLM: fix source address of callback to client
  SUNRPC client: add interface for binding to a local address
  SUNRPC server: record the destination address of a request
  SUNRPC: cleanup transport creation argument passing
  NFSv4: Make the NFS state model work with the nosharedcache mount option
  NFS: Error when mounting the same filesystem with different options
  NFS: Add the mount option "nosharecache"
  NFS: Add support for mounting NFSv4 file systems with string options
  NFS: Add final pieces to support in-kernel mount option parsing
  NFS: Introduce generic mount client API
  NFS: Add enums and match tables for mount option parsing
  NFS: Improve debugging output in NFS in-kernel mount client
  NFS: Clean up in-kernel NFS mount
  NFS: Remake nfsroot_mount as a permanent part of NFS client
  SUNRPC: Add a convenient default for the hostname when calling rpc_create()
  SUNRPC: Rename rpcb_getport to be consistent with new rpcb_getport_sync name
  SUNRPC: Rename rpcb_getport_external routine
  SUNRPC: Allow rpcbind requests to be interrupted by a signal.
  ...

17 years agonfsd: fix nfsd_vfs_read() splice actor setup
Jens Axboe [Fri, 13 Jul 2007 20:42:20 +0000 (22:42 +0200)]
nfsd: fix nfsd_vfs_read() splice actor setup

When nfsd was transitioned to use splice instead of sendfile() for data
transfers, a line setting the page index was lost. Restore it, so that
nfsd is functional when that path is used.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoCFS: Fix missing digit off in wmult table
Thomas Gleixner [Fri, 13 Jul 2007 19:43:55 +0000 (21:43 +0200)]
CFS: Fix missing digit off in wmult table

Roman Zippel noticed another inconsistency of the wmult table.

wmult[16] has a missing digit.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Fri, 13 Jul 2007 23:06:30 +0000 (16:06 -0700)]
Merge /pub/scm/linux/kernel/git/davej/cpufreq

* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix typos in powernow-k8 printk's.
  [CPUFREQ] Restore previously used governor on a hot-replugged CPU
  [CPUFREQ] bugfix cpufreq in combination with performance governor
  [CPUFREQ] powernow-k8 compile fix.
  [CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI
  [CPUFREQ] Longhaul - Option to disable ACPI C3 support

Fixed up arch/i386/kernel/cpu/cpufreq/powernow-k8.c due to revert that
got fixed differently in the cpufreq branch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge branch 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop
Linus Torvalds [Fri, 13 Jul 2007 17:52:27 +0000 (10:52 -0700)]
Merge branch 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop

* 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop: (28 commits)
  ioatdma: add the unisys "i/oat" pci vendor/device id
  ARM: Add drivers/dma to arch/arm/Kconfig
  iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver
  iop13xx: surface the iop13xx adma units to the iop-adma driver
  dmaengine: driver for the iop32x, iop33x, and iop13xx raid engines
  md: remove raid5 compute_block and compute_parity5
  md: handle_stripe5 - request io processing in raid5_run_ops
  md: handle_stripe5 - add request/completion logic for async expand ops
  md: handle_stripe5 - add request/completion logic for async read ops
  md: handle_stripe5 - add request/completion logic for async check ops
  md: handle_stripe5 - add request/completion logic for async compute ops
  md: handle_stripe5 - add request/completion logic for async write ops
  md: common infrastructure for running operations with raid5_run_ops
  md: raid5_run_ops - run stripe operations outside sh->lock
  raid5: replace custom debug PRINTKs with standard pr_debug
  raid5: refactor handle_stripe5 and handle_stripe6 (v3)
  async_tx: add the async_tx api
  xor: make 'xor_blocks' a library routine for use with async_tx
  dmaengine: make clients responsible for managing channels
  dmaengine: refactor dmaengine around dma_async_tx_descriptor
  ...

17 years agoMerge branch 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-block
Linus Torvalds [Fri, 13 Jul 2007 17:51:07 +0000 (10:51 -0700)]
Merge branch 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-block

* 'splice-2.6.23' of git://git.kernel.dk/data/git/linux-2.6-block:
  splice: fix offset mangling with direct splicing (sendfile)
  security: revalidate rw permissions for sys_splice and sys_vmsplice
  relay: fixup kerneldoc comment
  relay: fix bogus cast in subbuf_splice_actor()

17 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Fri, 13 Jul 2007 17:44:45 +0000 (10:44 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Workaround for a sparse warning in include/asm-mips/mach-tx4927/ioremap.h
  [MIPS] Make show_code static and add __user tag
  [MIPS] Workaround for a sparse warning in include/asm-mips/compat.h
  [MIPS] Add some __user tags
  [MIPS] math-emu minor cleanup
  [MIPS] Kill CONFIG_TX4927BUG_WORKAROUND
  [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_FB_XPERT98
  [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_SRC_CLK
  [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_USE32K
  [MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1XXX_PSC_SPI
  [CHAR] Delete leftovers of old Alchemy UART driver

17 years agoRevert "[CPUFREQ] powernow-k8: clarify number of cores."
Linus Torvalds [Fri, 13 Jul 2007 17:43:52 +0000 (10:43 -0700)]
Revert "[CPUFREQ] powernow-k8: clarify number of cores."

This reverts commit 904f7a3f042b5c6aa9e53ce83f2c9de5e33170ff.

As noted by Peter Anvin:

  "It causes build failures on i386.

   Yet another case of unnecessary divergence between i386 and x86-64
   I'm afraid..."

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
Linus Torvalds [Fri, 13 Jul 2007 17:12:21 +0000 (10:12 -0700)]
Merge git://git./linux/kernel/git/mingo/linux-2.6-sched

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  [PATCH] sched: small topology.h cleanup
  [PATCH] sched: fix show_task()/show_tasks() output
  [PATCH] sched: remove stale version info from kernel/sched_debug.c
  [PATCH] sched: allow larger granularity
  [PATCH] sched: fix prio_to_wmult[] for nice 1

[ I re-did the commits to get rid of some bogus merge commit that
  Ingo had. - Linus ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: small topology.h cleanup
Ingo Molnar [Wed, 11 Jul 2007 19:21:47 +0000 (21:21 +0200)]
[PATCH] sched: small topology.h cleanup

trivial cleanup: LOCAL_DISTANCE and REMOTE_DISTANCE are only used in
topology.h and inside an #ifndef section - limit their existence to
that #ifndef.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: fix show_task()/show_tasks() output
Ingo Molnar [Wed, 11 Jul 2007 19:21:47 +0000 (21:21 +0200)]
[PATCH] sched: fix show_task()/show_tasks() output

fix show_task()/show_tasks() output:

- there's no sibling info anymore

- the fields were not aligned properly with the description

- get rid of the lazy-TLB output: it's been quite some time since
  we last had a bug there, and when we had a bug it wasnt helped a
  bit by this debug output.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: remove stale version info from kernel/sched_debug.c
Ingo Molnar [Wed, 11 Jul 2007 19:21:47 +0000 (21:21 +0200)]
[PATCH] sched: remove stale version info from kernel/sched_debug.c

kernel/sched_debug.c referred to CFS -v20, but there's no CFS versioning
needed within the upstream kernel.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: allow larger granularity
Ingo Molnar [Wed, 11 Jul 2007 19:21:47 +0000 (21:21 +0200)]
[PATCH] sched: allow larger granularity

Allow granularity up to 100 msecs, instead of 10 msecs.
(needed on larger boxes)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] sched: fix prio_to_wmult[] for nice 1
Mike Galbraith [Wed, 11 Jul 2007 19:21:47 +0000 (21:21 +0200)]
[PATCH] sched: fix prio_to_wmult[] for nice 1

There's a typo in the values in prio_to_wmult[] for nice level 1.  While
it did not cause bad CPU distribution, but caused more rescheduling
between nice-0 and nice-1 tasks than necessary.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[MIPS] Workaround for a sparse warning in include/asm-mips/mach-tx4927/ioremap.h
Atsushi Nemoto [Fri, 13 Jul 2007 15:06:44 +0000 (00:06 +0900)]
[MIPS] Workaround for a sparse warning in include/asm-mips/mach-tx4927/ioremap.h

include2/asm/mach-tx49xx/ioremap.h:39:52: warning: cast truncates bits from constant value (fff000000 becomes ff000000)

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Make show_code static and add __user tag
Atsushi Nemoto [Fri, 13 Jul 2007 14:51:46 +0000 (23:51 +0900)]
[MIPS] Make show_code static and add __user tag

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Workaround for a sparse warning in include/asm-mips/compat.h
Atsushi Nemoto [Fri, 13 Jul 2007 14:51:38 +0000 (23:51 +0900)]
[MIPS] Workaround for a sparse warning in include/asm-mips/compat.h

Cast to a __user pointer via "unsigned long" to get rid of this warning:

include2/asm/compat.h:135:10: warning: cast adds address space to expression (<asn:1>)

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Add some __user tags
Atsushi Nemoto [Fri, 13 Jul 2007 14:02:42 +0000 (23:02 +0900)]
[MIPS] Add some __user tags

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] math-emu minor cleanup
Atsushi Nemoto [Fri, 13 Jul 2007 14:02:29 +0000 (23:02 +0900)]
[MIPS] math-emu minor cleanup

Declaring emulpc and contpc as "unsigned long" can get rid of some casts.
This also get rid of some sparse warnings.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Kill CONFIG_TX4927BUG_WORKAROUND
Atsushi Nemoto [Thu, 12 Jul 2007 17:00:26 +0000 (02:00 +0900)]
[MIPS] Kill CONFIG_TX4927BUG_WORKAROUND

Kill workarounds for very early chip (perhaps pre-TX4927A).

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_FB_XPERT98
Ralf Baechle [Fri, 13 Jul 2007 09:40:23 +0000 (10:40 +0100)]
[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_FB_XPERT98

Noticed by Robert P. J. Day (rpjday@mindspring.com).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_SRC_CLK
Ralf Baechle [Fri, 13 Jul 2007 05:45:48 +0000 (06:45 +0100)]
[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_SRC_CLK

Noticed by Robert P. J. Day (rpjday@mindspring.com).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_USE32K
Ralf Baechle [Fri, 13 Jul 2007 05:42:36 +0000 (06:42 +0100)]
[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1000_USE32K

Noticed by Robert P. J. Day (rpjday@mindspring.com).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1XXX_PSC_SPI
Ralf Baechle [Fri, 13 Jul 2007 05:33:09 +0000 (06:33 +0100)]
[MIPS] Alchemy: Remove code wrapped by dead symbol CONFIG_AU1XXX_PSC_SPI

Noticed by Robert P. J. Day (rpjday@mindspring.com).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years ago[CHAR] Delete leftovers of old Alchemy UART driver
Ralf Baechle [Fri, 13 Jul 2007 16:39:59 +0000 (17:39 +0100)]
[CHAR] Delete leftovers of old Alchemy UART driver

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
17 years agoioatdma: add the unisys "i/oat" pci vendor/device id
Dan Williams [Fri, 13 Jul 2007 15:06:19 +0000 (08:06 -0700)]
ioatdma: add the unisys "i/oat" pci vendor/device id

Cc: John Magolan <john.magolan@unisys.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agoARM: Add drivers/dma to arch/arm/Kconfig
Dan Williams [Tue, 2 Jan 2007 18:10:43 +0000 (11:10 -0700)]
ARM: Add drivers/dma to arch/arm/Kconfig

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agoiop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver

Adds the platform device definitions and the architecture specific support
routines (i.e. register initialization and descriptor formats) for the
iop-adma driver.

Changelog:
* add support for > 1k zero sum buffer sizes
* added dma/aau platform devices to iq80321 and iq80332 setup
* fixed the calculation in iop_desc_is_aligned
* support xor buffer sizes larger than 16MB
* fix places where software descriptors are assumed to be contiguous, only
  hardware descriptors are contiguous for up to a PAGE_SIZE buffer size
* convert to async_tx
* add interrupt support
* add platform devices for 80219 boards
* do not call platform register macros in driver code
* remove switch() statements for compatible register offsets/layouts
* change over to bitmap based capabilities
* remove unnecessary ARM assembly statement
* checkpatch.pl fixes
* gpl v2 only correction
* phys move to dma_async_tx_descriptor

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agoiop13xx: surface the iop13xx adma units to the iop-adma driver
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
iop13xx: surface the iop13xx adma units to the iop-adma driver

Adds the platform device definitions and the architecture specific
support routines (i.e. register initialization and descriptor formats) for the
iop-adma driver.

Changelog:
* added 'descriptor pool size' to the platform data
* add base support for buffer sizes larger than 16MB (hw max)
* build error fix from Kirill A. Shutemov
* rebase for async_tx changes
* add interrupt support
* do not call platform register macros in driver code
* remove unnecessary ARM assembly statement
* checkpatch.pl fixes
* gpl v2 only correction

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agodmaengine: driver for the iop32x, iop33x, and iop13xx raid engines
Dan Williams [Tue, 2 Jan 2007 20:52:26 +0000 (13:52 -0700)]
dmaengine: driver for the iop32x, iop33x, and iop13xx raid engines

The Intel(R) IOP series of i/o processors integrate an Xscale core with
raid acceleration engines.  The capabilities per platform are:

iop219:
 (2) copy engines
iop321:
 (2) copy engines
 (1) xor and block fill engine
iop33x:
 (2) copy and crc32c engines
 (1) xor, xor zero sum, pq, pq zero sum, and block fill engine
iop34x (iop13xx):
 (2) copy, crc32c, xor, xor zero sum, and block fill engines
 (1) copy, crc32c, xor, xor zero sum, pq, pq zero sum, and block fill engine

The driver supports the features of the async_tx api:
* asynchronous notification of operation completion
* implicit (interupt triggered) handling of inter-channel transaction
  dependencies

The driver adapts to the platform it is running by two methods.
1/ #include <asm/arch/adma.h> which defines the hardware specific
   iop_chan_* and iop_desc_* routines as a series of static inline
   functions
2/ The private platform data attached to the platform_device defines the
   capabilities of the channels

20070626: Callbacks are run in a tasklet.  Given the recent discussion on
LKML about killing tasklets in favor of workqueues I did a quick conversion
of the driver.  Raid5 resync performance dropped from 50MB/s to 30MB/s, so
the tasklet implementation remains until a generic softirq interface is
available.

Changelog:
* fixed a slot allocation bug in do_iop13xx_adma_xor that caused too few
slots to be requested eventually leading to data corruption
* enabled the slot allocation routine to attempt to free slots before
returning -ENOMEM
* switched the cleanup routine to solely use the software chain and the
status register to determine if a descriptor is complete.  This is
necessary to support other IOP engines that do not have status writeback
capability
* make the driver iop generic
* modified the allocation routines to understand allocating a group of
slots for a single operation
* added a null xor initialization operation for the xor only channel on
iop3xx
* support xor operations on buffers larger than the hardware maximum
* split the do_* routines into separate prep, src/dest set, submit stages
* added async_tx support (dependent operations initiation at cleanup time)
* simplified group handling
* added interrupt support (callbacks via tasklets)
* brought the pending depth inline with ioat (i.e. 4 descriptors)
* drop dma mapping methods, suggested by Chris Leech
* don't use inline in C files, Adrian Bunk
* remove static tasklet declarations
* make iop_adma_alloc_slots easier to read and remove chances for a
  corrupted descriptor chain
* fix locking bug in iop_adma_alloc_chan_resources, Benjamin Herrenschmidt
* convert capabilities over to dma_cap_mask_t
* fixup sparse warnings
* add descriptor flush before iop_chan_enable
* checkpatch.pl fixes
* gpl v2 only correction
* move set_src, set_dest, submit to async_tx methods
* move group_list and phys to async_tx

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agomd: remove raid5 compute_block and compute_parity5
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
md: remove raid5 compute_block and compute_parity5

replaced by raid5_run_ops

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - request io processing in raid5_run_ops
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
md: handle_stripe5 - request io processing in raid5_run_ops

I/O submission requests were already handled outside of the stripe lock in
handle_stripe.  Now that handle_stripe is only tasked with finding work,
this logic belongs in raid5_run_ops.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - add request/completion logic for async expand ops
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
md: handle_stripe5 - add request/completion logic for async expand ops

When a stripe is being expanded bulk copying takes place to move the data
from the old stripe to the new.  Since raid5_run_ops only operates on one
stripe at a time these bulk copies are handled in-line under the stripe
lock.  In the dma offload case we poll for the completion of the operation.

After the data has been copied into the new stripe the parity needs to be
recalculated across the new disks.  We reuse the existing postxor
functionality to carry out this calculation.  By setting STRIPE_OP_POSTXOR
without setting STRIPE_OP_BIODRAIN the completion path in handle stripe
can differentiate expand operations from normal write operations.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - add request/completion logic for async read ops
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
md: handle_stripe5 - add request/completion logic for async read ops

When a read bio is attached to the stripe and the corresponding block is
marked R5_UPTODATE, then a read (biofill) operation is scheduled to copy
the data from the stripe cache to the bio buffer.  handle_stripe flags the
blocks to be operated on with the R5_Wantfill flag.  If new read requests
arrive while raid5_run_ops is running they will not be handled until
handle_stripe is scheduled to run again.

Changelog:
* cleanup to_read and to_fill accounting
* do not fail reads that have reached the cache

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - add request/completion logic for async check ops
Dan Williams [Tue, 2 Jan 2007 20:52:31 +0000 (13:52 -0700)]
md: handle_stripe5 - add request/completion logic for async check ops

Check operations are scheduled when the array is being resynced or an
explicit 'check/repair' command was sent to the array.  Previously check
operations would destroy the parity block in the cache such that even if
parity turned out to be correct the parity block would be marked
!R5_UPTODATE at the completion of the check.  When the operation can be
carried out by a dma engine the assumption is that it can check parity as a
read-only operation.  If raid5_run_ops notices that the check was handled
by hardware it will preserve the R5_UPTODATE status of the parity disk.

When a check operation determines that the parity needs to be repaired we
reuse the existing compute block infrastructure to carry out the operation.
Repair operations imply an immediate write back of the data, so to
differentiate a repair from a normal compute operation the
STRIPE_OP_MOD_REPAIR_PD flag is added.

Changelog:
* remove test_and_set/test_and_clear BUG_ONs, Neil Brown

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - add request/completion logic for async compute ops
Dan Williams [Tue, 2 Jan 2007 20:52:30 +0000 (13:52 -0700)]
md: handle_stripe5 - add request/completion logic for async compute ops

handle_stripe will compute a block when a backing disk has failed, or when
it determines it can save a disk read by computing the block from all the
other up-to-date blocks.

Previously a block would be computed under the lock and subsequent logic in
handle_stripe could use the newly up-to-date block.  With the raid5_run_ops
implementation the compute operation is carried out a later time outside
the lock.  To preserve the old functionality we take advantage of the
dependency chain feature of async_tx to flag the block as R5_Wantcompute
and then let other parts of handle_stripe operate on the block as if it
were up-to-date.  raid5_run_ops guarantees that the block will be ready
before it is used in another operation.

However, this only works in cases where the compute and the dependent
operation are scheduled at the same time.  If a previous call to
handle_stripe sets the R5_Wantcompute flag there is no facility to pass the
async_tx dependency chain across successive calls to raid5_run_ops.  The
req_compute variable protects against this case.

Changelog:
* remove the req_compute BUG_ON

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: handle_stripe5 - add request/completion logic for async write ops
Dan Williams [Tue, 2 Jan 2007 20:52:30 +0000 (13:52 -0700)]
md: handle_stripe5 - add request/completion logic for async write ops

After handle_stripe5 decides whether it wants to perform a
read-modify-write, or a reconstruct write it calls
handle_write_operations5.  A read-modify-write operation will perform an
xor subtraction of the blocks marked with the R5_Wantprexor flag, copy the
new data into the stripe (biodrain) and perform a postxor operation across
all up-to-date blocks to generate the new parity.  A reconstruct write is run
when all blocks are already up-to-date in the cache so all that is needed
is a biodrain and postxor.

On the completion path STRIPE_OP_PREXOR will be set if the operation was a
read-modify-write.  The STRIPE_OP_BIODRAIN flag is used in the completion
path to differentiate write-initiated postxor operations versus
expansion-initiated postxor operations.  Completion of a write triggers i/o
to the drives.

Changelog:
* make the 'rcw' parameter to handle_write_operations5 a simple flag, Neil Brown
* remove test_and_set/test_and_clear BUG_ONs, Neil Brown

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: common infrastructure for running operations with raid5_run_ops
Dan Williams [Tue, 2 Jan 2007 20:52:30 +0000 (13:52 -0700)]
md: common infrastructure for running operations with raid5_run_ops

All the handle_stripe operations that are to be transitioned to use
raid5_run_ops need a method to coherently gather work under the stripe-lock
and hand that work off to raid5_run_ops.  The 'get_stripe_work' routine
runs under the lock to read all the bits in sh->ops.pending that do not
have the corresponding bit set in sh->ops.ack.  This modified 'pending'
bitmap is then passed to raid5_run_ops for processing.

The transition from 'ack' to 'completion' does not need similar protection
as the existing release_stripe infrastructure will guarantee that
handle_stripe will run again after a completion bit is set, and
handle_stripe can tolerate a sh->ops.completed bit being set while the lock
is held.

A call to async_tx_issue_pending_all() is added to raid5d to kick the
offload engines once all pending stripe operations work has been submitted.
This enables batching of the submission and completion of operations.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agomd: raid5_run_ops - run stripe operations outside sh->lock
Dan Williams [Tue, 2 Jan 2007 20:52:30 +0000 (13:52 -0700)]
md: raid5_run_ops - run stripe operations outside sh->lock

When the raid acceleration work was proposed, Neil laid out the following
attack plan:

1/ move the xor and copy operations outside spin_lock(&sh->lock)
2/ find/implement an asynchronous offload api

The raid5_run_ops routine uses the asynchronous offload api (async_tx) and
the stripe_operations member of a stripe_head to carry out xor+copy
operations asynchronously, outside the lock.

To perform operations outside the lock a new set of state flags is needed
to track new requests, in-flight requests, and completed requests.  In this
new model handle_stripe is tasked with scanning the stripe_head for work,
updating the stripe_operations structure, and finally dropping the lock and
calling raid5_run_ops for processing.  The following flags outline the
requests that handle_stripe can make of raid5_run_ops:

STRIPE_OP_BIOFILL
 - copy data into request buffers to satisfy a read request
STRIPE_OP_COMPUTE_BLK
 - generate a missing block in the cache from the other blocks
STRIPE_OP_PREXOR
 - subtract existing data as part of the read-modify-write process
STRIPE_OP_BIODRAIN
 - copy data out of request buffers to satisfy a write request
STRIPE_OP_POSTXOR
 - recalculate parity for new data that has entered the cache
STRIPE_OP_CHECK
 - verify that the parity is correct
STRIPE_OP_IO
 - submit i/o to the member disks (note this was already performed outside
   the stripe lock, but it made sense to add it as an operation type

The flow is:
1/ handle_stripe sets STRIPE_OP_* in sh->ops.pending
2/ raid5_run_ops reads sh->ops.pending, sets sh->ops.ack, and submits the
   operation to the async_tx api
3/ async_tx triggers the completion callback routine to set
   sh->ops.complete and release the stripe
4/ handle_stripe runs again to finish the operation and optionally submit
   new operations that were previously blocked

Note this patch just defines raid5_run_ops, subsequent commits (one per
major operation type) modify handle_stripe to take advantage of this
routine.

Changelog:
* removed ops_complete_biodrain in favor of ops_complete_postxor and
  ops_complete_write.
* removed the raid5_run_ops workqueue
* call bi_end_io for reads in ops_complete_biofill, saves a call to
  handle_stripe
* explicitly handle the 2-disk raid5 case (xor becomes memcpy), Neil Brown
* fix race between async engines and bi_end_io call for reads, Neil Brown
* remove unnecessary spin_lock from ops_complete_biofill
* remove test_and_set/test_and_clear BUG_ONs, Neil Brown
* remove explicit interrupt handling for channel switching, this feature
  was absorbed (i.e. it is now implicit) by the async_tx api
* use return_io in ops_complete_biofill

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agoraid5: replace custom debug PRINTKs with standard pr_debug
Dan Williams [Mon, 9 Jul 2007 18:56:43 +0000 (11:56 -0700)]
raid5: replace custom debug PRINTKs with standard pr_debug

Replaces PRINTK with pr_debug, and kills the RAID5_DEBUG definition in
favor of the global DEBUG definition.  To get local debug messages just add
'#define DEBUG' to the top of the file.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agoraid5: refactor handle_stripe5 and handle_stripe6 (v3)
Dan Williams [Mon, 9 Jul 2007 18:56:43 +0000 (11:56 -0700)]
raid5: refactor handle_stripe5 and handle_stripe6 (v3)

handle_stripe5 and handle_stripe6 have very deep logic paths handling the
various states of a stripe_head.  By introducing the 'stripe_head_state'
and 'r6_state' objects, large portions of the logic can be moved to
sub-routines.

'struct stripe_head_state' consumes all of the automatic variables that previously
stood alone in handle_stripe5,6.  'struct r6_state' contains the handle_stripe6
specific variables like p_failed and q_failed.

One of the nice side effects of the 'stripe_head_state' change is that it
allows for further reductions in code duplication between raid5 and raid6.
The following new routines are shared between raid5 and raid6:

handle_completed_write_requests
handle_requests_to_failed_array
handle_stripe_expansion

Changes:
* v2: fixed 'conf->raid_disk-1' for the raid6 'handle_stripe_expansion' path
* v3: removed the unused 'dirty' field from struct stripe_head_state
* v3: coalesced open coded bi_end_io routines into return_io()

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agoasync_tx: add the async_tx api
Dan Williams [Tue, 2 Jan 2007 18:10:44 +0000 (11:10 -0700)]
async_tx: add the async_tx api

The async_tx api provides methods for describing a chain of asynchronous
bulk memory transfers/transforms with support for inter-transactional
dependencies.  It is implemented as a dmaengine client that smooths over
the details of different hardware offload engine implementations.  Code
that is written to the api can optimize for asynchronous operation and the
api will fit the chain of operations to the available offload resources.

I imagine that any piece of ADMA hardware would register with the
'async_*' subsystem, and a call to async_X would be routed as
appropriate, or be run in-line. - Neil Brown

async_tx exploits the capabilities of struct dma_async_tx_descriptor to
provide an api of the following general format:

struct dma_async_tx_descriptor *
async_<operation>(..., struct dma_async_tx_descriptor *depend_tx,
dma_async_tx_callback cb_fn, void *cb_param)
{
struct dma_chan *chan = async_tx_find_channel(depend_tx, <operation>);
struct dma_device *device = chan ? chan->device : NULL;
int int_en = cb_fn ? 1 : 0;
struct dma_async_tx_descriptor *tx = device ?
device->device_prep_dma_<operation>(chan, len, int_en) : NULL;

if (tx) { /* run <operation> asynchronously */
...
tx->tx_set_dest(addr, tx, index);
...
tx->tx_set_src(addr, tx, index);
...
async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);
} else { /* run <operation> synchronously */
...
<operation>
...
async_tx_sync_epilog(flags, depend_tx, cb_fn, cb_param);
}

return tx;
}

async_tx_find_channel() returns a capable channel from its pool.  The
channel pool is organized as a per-cpu array of channel pointers.  The
async_tx_rebalance() routine is tasked with managing these arrays.  In the
uniprocessor case async_tx_rebalance() tries to spread responsibility
evenly over channels of similar capabilities.  For example if there are two
copy+xor channels, one will handle copy operations and the other will
handle xor.  In the SMP case async_tx_rebalance() attempts to spread the
operations evenly over the cpus, e.g. cpu0 gets copy channel0 and xor
channel0 while cpu1 gets copy channel 1 and xor channel 1.  When a
dependency is specified async_tx_find_channel defaults to keeping the
operation on the same channel.  A xor->copy->xor chain will stay on one
channel if it supports both operation types, otherwise the transaction will
transition between a copy and a xor resource.

Currently the raid5 implementation in the MD raid456 driver has been
converted to the async_tx api.  A driver for the offload engines on the
Intel Xscale series of I/O processors, iop-adma, is provided in a later
commit.  With the iop-adma driver and async_tx, raid456 is able to offload
copy, xor, and xor-zero-sum operations to hardware engines.

On iop342 tiobench showed higher throughput for sequential writes (20 - 30%
improvement) and sequential reads to a degraded array (40 - 55%
improvement).  For the other cases performance was roughly equal, +/- a few
percentage points.  On a x86-smp platform the performance of the async_tx
implementation (in synchronous mode) was also +/- a few percentage points
of the original implementation.  According to 'top' on iop342 CPU
utilization drops from ~50% to ~15% during a 'resync' while the speed
according to /proc/mdstat doubles from ~25 MB/s to ~50 MB/s.

The tiobench command line used for testing was: tiobench --size 2048
--block 4096 --block 131072 --dir /mnt/raid --numruns 5
* iop342 had 1GB of memory available

Details:
* if CONFIG_DMA_ENGINE=n the asynchronous path is compiled away by making
  async_tx_find_channel a static inline routine that always returns NULL
* when a callback is specified for a given transaction an interrupt will
  fire at operation completion time and the callback will occur in a
  tasklet.  if the the channel does not support interrupts then a live
  polling wait will be performed
* the api is written as a dmaengine client that requests all available
  channels
* In support of dependencies the api implicitly schedules channel-switch
  interrupts.  The interrupt triggers the cleanup tasklet which causes
  pending operations to be scheduled on the next channel
* Xor engines treat an xor destination address differently than a software
  xor routine.  To the software routine the destination address is an implied
  source, whereas engines treat it as a write-only destination.  This patch
  modifies the xor_blocks routine to take a an explicit destination address
  to mirror the hardware.

Changelog:
* fixed a leftover debug print
* don't allow callbacks in async_interrupt_cond
* fixed xor_block changes
* fixed usage of ASYNC_TX_XOR_DROP_DEST
* drop dma mapping methods, suggested by Chris Leech
* printk warning fixups from Andrew Morton
* don't use inline in C files, Adrian Bunk
* select the API when MD is enabled
* BUG_ON xor source counts <= 1
* implicitly handle hardware concerns like channel switching and
  interrupts, Neil Brown
* remove the per operation type list, and distribute operation capabilities
  evenly amongst the available channels
* simplify async_tx_find_channel to optimize the fast path
* introduce the channel_table_initialized flag to prevent early calls to
  the api
* reorganize the code to mimic crypto
* include mm.h as not all archs include it in dma-mapping.h
* make the Kconfig options non-user visible, Adrian Bunk
* move async_tx under crypto since it is meant as 'core' functionality, and
  the two may share algorithms in the future
* move large inline functions into c files
* checkpatch.pl fixes
* gpl v2 only correction

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
17 years agoxor: make 'xor_blocks' a library routine for use with async_tx
Dan Williams [Mon, 9 Jul 2007 18:56:42 +0000 (11:56 -0700)]
xor: make 'xor_blocks' a library routine for use with async_tx

The async_tx api tries to use a dma engine for an operation, but will fall
back to an optimized software routine otherwise.  Xor support is
implemented using the raid5 xor routines.  For organizational purposes this
routine is moved to a common area.

The following fixes are also made:
* rename xor_block => xor_blocks, suggested by Adrian Bunk
* ensure that xor.o initializes before md.o in the built-in case
* checkpatch.pl fixes
* mark calibrate_xor_blocks __init, Adrian Bunk

Cc: Adrian Bunk <bunk@stusta.de>
Cc: NeilBrown <neilb@suse.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
17 years agodmaengine: make clients responsible for managing channels
Dan Williams [Mon, 9 Jul 2007 18:56:42 +0000 (11:56 -0700)]
dmaengine: make clients responsible for managing channels

The current implementation assumes that a channel will only be used by one
client at a time.  In order to enable channel sharing the dmaengine core is
changed to a model where clients subscribe to channel-available-events.
Instead of tracking how many channels a client wants and how many it has
received the core just broadcasts the available channels and lets the
clients optionally take a reference.  The core learns about the clients'
needs at dma_event_callback time.

In support of multiple operation types, clients can specify a capability
mask to only be notified of channels that satisfy a certain set of
capabilities.

Changelog:
* removed DMA_TX_ARRAY_INIT, no longer needed
* dma_client_chan_free -> dma_chan_release: switch to global reference
  counting only at device unregistration time, before it was also happening
  at client unregistration time
* clients now return dma_state_client to dmaengine (ack, dup, nak)
* checkpatch.pl fixes
* fixup merge with git-ioat

Cc: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
17 years agodmaengine: refactor dmaengine around dma_async_tx_descriptor
Dan Williams [Tue, 2 Jan 2007 18:10:43 +0000 (11:10 -0700)]
dmaengine: refactor dmaengine around dma_async_tx_descriptor

The current dmaengine interface defines mutliple routines per operation,
i.e. dma_async_memcpy_buf_to_buf, dma_async_memcpy_buf_to_page etc.  Adding
more operation types (xor, crc, etc) to this model would result in an
unmanageable number of method permutations.

Are we really going to add a set of hooks for each DMA engine
whizbang feature?
- Jeff Garzik

The descriptor creation process is refactored using the new common
dma_async_tx_descriptor structure.  Instead of per driver
do_<operation>_<dest>_to_<src> methods, drivers integrate
dma_async_tx_descriptor into their private software descriptor and then
define a 'prep' routine per operation.  The prep routine allocates a
descriptor and ensures that the tx_set_src, tx_set_dest, tx_submit routines
are valid.  Descriptor creation and submission becomes:

struct dma_device *dev;
struct dma_chan *chan;
struct dma_async_tx_descriptor *tx;

tx = dev->device_prep_dma_<operation>(chan, len, int_flag)
tx->tx_set_src(dma_addr_t, tx, index /* for multi-source ops */)
tx->tx_set_dest(dma_addr_t, tx, index)
tx->tx_submit(tx)

In addition to the refactoring, dma_async_tx_descriptor also lays the
groundwork for definining cross-channel-operation dependencies, and a
callback facility for asynchronous notification of operation completion.

Changelog:
* drop dma mapping methods, suggested by Chris Leech
* fix ioat_dma_dependency_added, also caught by Andrew Morton
* fix dma_sync_wait, change from Andrew Morton
* uninline large functions, change from Andrew Morton
* add tx->callback = NULL to dmaengine calls to interoperate with async_tx
  calls
* hookup ioat_tx_submit
* convert channel capabilities to a 'cpumask_t like' bitmap
* removed DMA_TX_ARRAY_INIT, no longer needed
* checkpatch.pl fixes
* make set_src, set_dest, and tx_submit descriptor specific methods
* fixup git-ioat merge
* move group_list and phys to dma_async_tx_descriptor

Cc: Jeff Garzik <jeff@garzik.org>
Cc: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
17 years agosplice: fix offset mangling with direct splicing (sendfile)
Jens Axboe [Fri, 13 Jul 2007 12:11:43 +0000 (14:11 +0200)]
splice: fix offset mangling with direct splicing (sendfile)

If the output actor doesn't transfer the full amount of data, we will
increment ppos too much. Two related bugs in there:

- We need to break out and return actor() retval if it is shorted than
  what we spliced into the pipe.

- Adjust ppos only according to actor() return.

Also fix loop problem in generic_file_splice_read(), it should not keep
going when data has already been transferred.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
17 years agosecurity: revalidate rw permissions for sys_splice and sys_vmsplice
James Morris [Fri, 13 Jul 2007 09:44:32 +0000 (11:44 +0200)]
security: revalidate rw permissions for sys_splice and sys_vmsplice

Revalidate read/write permissions for splice(2) and vmslice(2), in case
security policy has changed since the files were opened.

Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
17 years agorelay: fixup kerneldoc comment
Tom Zanussi [Thu, 12 Jul 2007 06:12:05 +0000 (08:12 +0200)]
relay: fixup kerneldoc comment

Change comment from kerneldoc to normal.

Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
17 years agorelay: fix bogus cast in subbuf_splice_actor()
Tom Zanussi [Thu, 12 Jul 2007 06:12:04 +0000 (08:12 +0200)]
relay: fix bogus cast in subbuf_splice_actor()

The current code that sets the read position in subbuf_splice_actor may
give erroneous results if the buffer size isn't a power of 2.  This
patch fixes the problem.

Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
17 years ago[CPUFREQ] Fix typos in powernow-k8 printk's.
Dave Jones [Fri, 13 Jul 2007 05:34:10 +0000 (01:34 -0400)]
[CPUFREQ] Fix typos in powernow-k8 printk's.

Based on a patch from Joachim which didn't apply, so I fixed
it up by hand, and also corrected the surrounding indentation
a little.

Signed-off-by: Joachim.Deguara <joachim.deguara@amd.com>
Acked-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years ago[CPUFREQ] Restore previously used governor on a hot-replugged CPU
Thomas Renninger [Mon, 9 Jul 2007 18:35:28 +0000 (11:35 -0700)]
[CPUFREQ] Restore previously used governor on a hot-replugged CPU

Negative side effect: needs NR_CPUs pointer array of memory in
CONFIG_HOTPLUG_CPU case.

Still needs userspace track keeping and rewriting of governors if governors
change while a CPU is not active (always the governor at CPU remove time is
restored).

Move of policy->user_policy.governor assignment is just a minor cleanup.
http://bugzilla.kernel.org/show_bug.cgi?id=8671

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years ago[CPUFREQ] bugfix cpufreq in combination with performance governor
Peter Oruba [Mon, 9 Jul 2007 18:35:27 +0000 (11:35 -0700)]
[CPUFREQ] bugfix cpufreq in combination with performance governor

There is a frequency scaling issue that I encountered with the performance
governor in combination with CPU hotplug.

In cpufreq.c CPU frequency is reduced to its minimum before the CPU gets
unregistered and set offline.  Does that have a particular reason?

Since the (k8-)governor does not monitor CPU frequency that setting also
applies then to the remaining CPU as well and lets the system run on the
lowest frequency although performance is chose as the policy.

Signed-off-by: Peter Oruba <peter.oruba@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years ago[CPUFREQ] powernow-k8 compile fix.
Andrew Morton [Mon, 9 Jul 2007 18:35:27 +0000 (11:35 -0700)]
[CPUFREQ] powernow-k8 compile fix.

Make it compile on UP.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years ago[CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI
Adrian Bunk [Sun, 8 Jul 2007 21:39:14 +0000 (23:39 +0200)]
[CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI

This patch contains the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years ago[CPUFREQ] Longhaul - Option to disable ACPI C3 support
Rafał Bilski [Sun, 8 Jul 2007 19:51:26 +0000 (21:51 +0200)]
[CPUFREQ] Longhaul - Option to disable ACPI C3 support

On some motherboards ACPI C3 is available, but it isn't
causing frequency transition on VIA Nehemiah. Longhaul
wasn't working at all earlier, but due to
scaling_cur_speed returning true CPU frequency now, it
looks like CPU is getting stuck at highest frequency
since 2.6.21. I didn't find a reason. Halt is causing
frequency transition.

Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
17 years agoRevert "USB: fix gregkh-usb-usb-use-menuconfig-objects"
Linus Torvalds [Fri, 13 Jul 2007 00:06:50 +0000 (17:06 -0700)]
Revert "USB: fix gregkh-usb-usb-use-menuconfig-objects"

This reverts commit acb11c8b8020f1f1b2545152020675ef32d09a58.

It was broken.  We most certainly *do* want the default to be the old
behaviour (and the common case!), instead of breaking everybodys
configuration and making 99% of all people have to override the default.

What were you guys thinking?

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6
Linus Torvalds [Thu, 12 Jul 2007 23:46:58 +0000 (16:46 -0700)]
Merge /pub/scm/linux/kernel/git/gregkh/usb-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (149 commits)
  USB: ohci-pnx4008: Remove unnecessary cast of return value of kzalloc
  USB: additions to the quirk list
  usb-storage: implement autosuspend
  USB: cdc-acm: add new device id to option driver
  USB: goku_udc trivial cleanups
  USB: usb gadget stack can now -DDEBUG with Kconfig
  usb gadget stack: remove usb_ep_*_buffer(), part 2
  usb gadget stack: remove usb_ep_*_buffer(), part 1
  USB: pxa2xx_udc -- cleanups, mostly removing dma hooks
  USB: pxa2xx_udc: use generic gpio layer
  USB: quirk for samsung printer
  USB: usb/dma doc updates
  USB: drivers/usb/storage/unusual_devs.h whitespace cleanup
  USB: remove Makefile reference to obsolete OHCI_AT91
  USB: io_*: remove bogus termios no change checks
  USB: mos7720: remove bogus no termios change check
  USB: visor and whiteheat: remove bogus termios change checks
  USB: pl2303: remove bogus checks and fix speed support to use tty_get_baud_rate()
  USB: mos7840.c: turn this into a serial driver
  USB: make the usb_device numa_node get assigned from controller
  ...

17 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Thu, 12 Jul 2007 23:46:01 +0000 (16:46 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Un-break ia64 build

17 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Thu, 12 Jul 2007 23:45:40 +0000 (16:45 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (76 commits)
  IB: Update MAINTAINERS with Hal's new email address
  IB/mlx4: Implement query SRQ
  IB/mlx4: Implement query QP
  IB/cm: Send no match if a SIDR REQ does not match a listen
  IB/cm: Fix handling of duplicate SIDR REQs
  IB/cm: cm_msgs.h should include ib_cm.h
  IB/cm: Include HCA ACK delay in local ACK timeout
  IB/cm: Use spin_lock_irq() instead of spin_lock_irqsave() when possible
  IB/sa: Make sure SA queries use default P_Key
  IPoIB: Recycle loopback skbs instead of freeing and reallocating
  IB/mthca: Replace memset(<addr>, 0, PAGE_SIZE) with clear_page(<addr>)
  IPoIB/cm: Fix warning if IPV6 is not enabled
  IB/core: Take sizeof the correct pointer when calling kmalloc()
  IB/ehca: Improve latency by unlocking after triggering the hardware
  IB/ehca: Notify consumers of LID/PKEY/SM changes after nondisruptive events
  IB/ehca: Return QP pointer in poll_cq()
  IB/ehca: Change idr spinlocks into rwlocks
  IB/ehca: Refactor sync between completions and destroy_cq using atomic_t
  IB/ehca: Lock renaming, static initializers
  IB/ehca: Report RDMA atomic attributes in query_qp()
  ...

17 years agoRevert "[BNX2]: Seems to not need net/tcp.h"
Linus Torvalds [Thu, 12 Jul 2007 23:40:08 +0000 (16:40 -0700)]
Revert "[BNX2]: Seems to not need net/tcp.h"

This reverts commit 963bd949b12158d9b5380b718b31c4b33372ed73.  The
driver _does_ need the networking header files;

  CC [M]  drivers/net/bnx2.o
drivers/net/bnx2.c: In function 'bnx2_start_xmit':
drivers/net/bnx2.c:5177: warning: implicit declaration of function 'tcp_optlen'
drivers/net/bnx2.c:5181: error: invalid application of 'sizeof' to incomplete type 'struct ipv6hdr'
drivers/net/bnx2.c:5202: error: invalid application of 'sizeof' to incomplete type 'struct tcphdr'
drivers/net/bnx2.c:5207: warning: implicit declaration of function 'tcp_hdr'
drivers/net/bnx2.c:5207: error: invalid type argument of '->'
make[2]: *** [drivers/net/bnx2.o] Error 1
make[1]: *** [drivers/net] Error 2
make: *** [drivers] Error 2

Cc: Ilpo Jävinen <ilpo.jarvinen@helsinki.fi>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoUSB: ohci-pnx4008: Remove unnecessary cast of return value of kzalloc
Suresh Jayaraman [Thu, 28 Jun 2007 17:16:30 +0000 (11:16 -0600)]
USB: ohci-pnx4008: Remove unnecessary cast of return value of kzalloc

Remove unnecessary cast of return value of kzalloc() in
usb/host/ohci-pnx4008.c

Signed-off-by: Suresh Jayaraman <sjayaraman@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: additions to the quirk list
Oliver Neukum [Tue, 10 Jul 2007 12:12:08 +0000 (14:12 +0200)]
USB: additions to the quirk list

this adds some scanners reported to be crashed by autosuspend to
the quirk list.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agousb-storage: implement autosuspend
Alan Stern [Fri, 6 Jul 2007 18:24:27 +0000 (14:24 -0400)]
usb-storage: implement autosuspend

This patch (as930) implements autosuspend for usb-storage.  It is
adapted from a patch by Oliver Neukum.  Autosuspend is allowed except
during LUN scanning, resets, and command execution.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: cdc-acm: add new device id to option driver
Andrey Arapov [Wed, 4 Jul 2007 15:11:42 +0000 (17:11 +0200)]
USB: cdc-acm: add new device id to option driver

USB: add new device id to option driver
device is Samsung X180 China cellphone

Signed-off-by: Andrey Arapov <andrey.arapov@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: goku_udc trivial cleanups
David Brownell [Mon, 2 Jul 2007 00:55:50 +0000 (17:55 -0700)]
USB: goku_udc trivial cleanups

Minor fixes to goku_udc ... whitespace, let -DDEBUG do its thing,
check the return value of device_register(), sparse tweaks.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: usb gadget stack can now -DDEBUG with Kconfig
David Brownell [Mon, 2 Jul 2007 00:35:28 +0000 (17:35 -0700)]
USB: usb gadget stack can now -DDEBUG with Kconfig

Although the other USB driver directories got taught how use Kconfig
and the Makefile to enable the debugging messages enabled by -DDEBUG,
the gadget stack was overlooked.

This patch remedies that omission, but doesn't update any drivers to
remove previous idiosyncracies in this area ... other than the RNDIS
code, which defined its own DEBUG() macro in a broken way.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agousb gadget stack: remove usb_ep_*_buffer(), part 2
David Brownell [Sun, 1 Jul 2007 19:21:00 +0000 (12:21 -0700)]
usb gadget stack: remove usb_ep_*_buffer(), part 2

This patch removes controller driver infrastructure which supported
the now-removed usb_ep_{alloc,free}_buffer() calls.

As can be seen, many of the implementations of this were broken to
various degrees.  Many didn't properly return dma-coherent mappings;
those which did so were necessarily ugly because of bogosity in the
underlying dma_free_coherent() calls ... which on many platforms
can't be called from the same contexts (notably in_irq) from which
their dma_alloc_coherent() sibling can be called.

The main potential downside of removing this is that gadget drivers
wouldn't have specific knowledge that the controller drivers have:
endpoints that aren't dma-capable don't need any dma mappings at all.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agousb gadget stack: remove usb_ep_*_buffer(), part 1
David Brownell [Sun, 1 Jul 2007 18:04:54 +0000 (11:04 -0700)]
usb gadget stack: remove usb_ep_*_buffer(), part 1

Remove usb_ep_{alloc,free}_buffer() calls, for small dma-coherent buffers.
This patch just removes the interface and its users; later patches will
remove controller driver support.

  - This interface is invariably not implemented correctly in the
    controller drivers (e.g. using dma pools, a mechanism which
    post-dates the interface by several years).

  - At this point no gadget driver really *needs* to use it.  In
    current kernels, any driver that needs such a mechanism could
    allocate a dma pool themselves.

Removing this interface is thus a simplification and improvement.

Note that the gmidi.c driver had a bug in this area; fixed.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: pxa2xx_udc -- cleanups, mostly removing dma hooks
David Brownell [Sat, 30 Jun 2007 13:30:04 +0000 (06:30 -0700)]
USB: pxa2xx_udc -- cleanups, mostly removing dma hooks

Cleanups to the pxa2xx_udc code:

  - Primarily removing unused DMA hooks.
  - One "sparse" warning removed
  - Remove some Lubbock-only LED hooks (for debugging)

That DMA code was never really completed.  It worked, mostly, for IN
transfers (to the host) if they were fortuitously aligned, but that
code was never fully tested.  And it was never coded for OUT transfers
(which is where DMA would really help) ... because of chip errata on
essentially every chip other than the pxa255, and because of design
botches (nothing automated data toggle).  So it's effectively been
dead code for several years now ... no point in keeping it around.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: pxa2xx_udc: use generic gpio layer
Milan Svoboda [Sat, 30 Jun 2007 13:25:35 +0000 (06:25 -0700)]
USB: pxa2xx_udc: use generic gpio layer

This patch lets the pxa2xx_udc use the generic gpio layer,
on the relevant PXA and IXP systems.

Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: quirk for samsung printer
Oliver Neukum [Fri, 29 Jun 2007 06:44:37 +0000 (08:44 +0200)]
USB: quirk for samsung printer

this printer does not survive suspension.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: usb/dma doc updates
David Brownell [Mon, 2 Jul 2007 06:33:12 +0000 (23:33 -0700)]
USB: usb/dma doc updates

This patch updates some of the documentation about DMA buffer management
for USB, and ways to avoid extra copying.  Our understanding of the issues
has improved over time.

 - Most drivers should *avoid* the dma-coherent allocators.  There are
   a few exceptions (like the HID driver).

 - Some methods are currently commented out; it seems folk writing
   USB drivers aren't doing performance tuning at that level yet.

 - Just avoid highmem; there's no good way to pass an "I can do highmem
   DMA" capability through a driver stack.  This is easy, everything
   already avoids highmem.  But it'd be nice if x86_32 systems with much
   physical memory could use it directly with network adapters and mass
   storage devices.  (Patch, anyone?)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: drivers/usb/storage/unusual_devs.h whitespace cleanup
S.Caglar Onur [Wed, 4 Jul 2007 20:52:47 +0000 (13:52 -0700)]
USB: drivers/usb/storage/unusual_devs.h whitespace cleanup

Following patch removes trailing whitespaces at the ends of lines and converts
smarttabs/whitespaces into real tabs.

Signed-off-by: S.Caglar Onur <caglar@pardus.org.tr>
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: remove Makefile reference to obsolete OHCI_AT91
Robert P. J. Day [Mon, 9 Jul 2007 19:03:13 +0000 (12:03 -0700)]
USB: remove Makefile reference to obsolete OHCI_AT91

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: io_*: remove bogus termios no change checks
Alan Cox [Mon, 9 Jul 2007 19:03:12 +0000 (12:03 -0700)]
USB: io_*: remove bogus termios no change checks

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: mos7720: remove bogus no termios change check
Alan Cox [Mon, 9 Jul 2007 19:03:12 +0000 (12:03 -0700)]
USB: mos7720: remove bogus no termios change check

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: visor and whiteheat: remove bogus termios change checks
Alan Cox [Mon, 9 Jul 2007 19:03:11 +0000 (12:03 -0700)]
USB: visor and whiteheat: remove bogus termios change checks

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: pl2303: remove bogus checks and fix speed support to use tty_get_baud_rate()
Alan Cox [Mon, 9 Jul 2007 19:03:10 +0000 (12:03 -0700)]
USB: pl2303: remove bogus checks and fix speed support to use tty_get_baud_rate()

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: mos7840.c: turn this into a serial driver
Alan Cox [Mon, 9 Jul 2007 19:03:10 +0000 (12:03 -0700)]
USB: mos7840.c: turn this into a serial driver

The MOS driver is "interesting", in a bad kind of 'how the hell did this
get merged' kind of way

- Remove the bogus termios change check
- Remove the duplicate code for half the ioctls
- Remove the supporting code to duplicate the ioctl code

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: make the usb_device numa_node get assigned from controller
Yinghai Lu [Mon, 9 Jul 2007 19:03:09 +0000 (12:03 -0700)]
USB: make the usb_device numa_node get assigned from controller

So we can use dev_to_node(&usb_dev->dev) later in kmalloc_node to dma buffer

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Andi Kleen <ak@suse.de>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: ftdi_sio: fix oops due to processing workarounds too early
Oliver Neukum [Mon, 9 Jul 2007 19:03:08 +0000 (12:03 -0700)]
USB: ftdi_sio: fix oops due to processing workarounds too early

Fix an oops that happens in relation with applying work arounds for buggy
ftdi_sio devices.  The quirks were handled too early because due to changes in
the initialisation of usb serial devices the device was not fully initialised
when the old hook was called.

Addresses bug 8564

Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: drivers/block/ub.c: use list_for_each_entry()
Matthias Kaehlcke [Mon, 9 Jul 2007 19:03:07 +0000 (12:03 -0700)]
USB: drivers/block/ub.c: use list_for_each_entry()

Low performance USB storage driver: Use list_for_each_entry() instead
of list_for_each()

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: fix gregkh-usb-usb-use-menuconfig-objects
Jan Engelhardt [Mon, 9 Jul 2007 19:03:06 +0000 (12:03 -0700)]
USB: fix gregkh-usb-usb-use-menuconfig-objects

Generally, Jens Axboe was against 'default y', so I'll have some patches to
remove it.

Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: Make usb-autosuspend timer 1 sec jiffy aligned
Venki Pallipadi [Mon, 9 Jul 2007 19:03:06 +0000 (12:03 -0700)]
USB: Make usb-autosuspend timer 1 sec jiffy aligned

Make usb autosuspend timers 1sec jiffy aligned.

This helps to reduce the frequency at which the CPU must be taken out of a
lower-power state.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: Don't autosuspend Blackberry devices.
Jeremy Katz [Tue, 19 Jun 2007 21:16:10 +0000 (17:16 -0400)]
USB: Don't autosuspend Blackberry devices.

Blackberry devices charge over USB.  By autosuspending the port, they are
not able to charge reliably.

Signed-off-by: Jeremy Katz <katzj@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: Support Blackberry Pearl with berry_charge
Jeremy Katz [Tue, 19 Jun 2007 21:15:38 +0000 (17:15 -0400)]
USB: Support Blackberry Pearl with berry_charge

The Blackberry Pearl (8100) needs similar tweaks as older Blackberry models
to be able to charge when connected via USB.  The Pearl also adds an
additional need to go into a separate mode for fully accessing the device;
do that by default as well.

Changes based on the changes from bcharge in the barry project
(http://barry.sf.net)

Signed-off-by: Jeremy Katz <katzj@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: add IAD support to usbfs and sysfs
Craig W. Nadler [Sat, 16 Jun 2007 03:14:35 +0000 (23:14 -0400)]
USB: add IAD support to usbfs and sysfs

USB_IAD: Adds support for USB Interface Association Descriptors.

This patch adds support to the USB host stack for parsing, storing, and
displaying Interface Association Descriptors. In /proc/bus/usb/devices
lines starting with A: show the fields in an IAD. In sysfs if an
interface on a USB device is referenced by an IAD the following files
will be added to the sysfs directory for that interface:
iad_bFirstInterface, iad_bInterfaceCount, iad_bFunctionClass, and
iad_bFunctionSubClass, iad_bFunctionProtocol

Signed-off-by: Craig W. Nadler <craig@nadler.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
17 years agoUSB: mos7720: change developer email addresses
Greg Kroah-Hartman [Mon, 25 Jun 2007 08:08:01 +0000 (01:08 -0700)]
USB: mos7720: change developer email addresses

Update the original developer's email addresses at their request.

Cc: Vijaya Kumar <vijaykumar.gn@gmail.com>
Cc: Ajay Kumar <naanuajay@yahoo.com>
Cc: Gurudeva <ngurudeva@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>