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  1. 10 Nov, 2012 9 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 2b1768f3
      Linus Torvalds authored 
      Pull sparc fixes from David Miller:
 "Several build/bug fixes for sparc, including:

  1) Configuring a mix of static vs.  modular sparc64 crypto modules
     didn't work, remove an ill-conceived attempt to only have to build
     the device match table for these drivers once to fix the problem.

     Reported by Meelis Roos.

  2) Make the montgomery multiple/square and mpmul instructions actually
     usable in 32-bit tasks.  Essentially this involves providing 32-bit
     userspace with a way to use a 64-bit stack when it needs to.

  3) Our sparc64 atomic backoffs don't yield cpu strands properly on
     Niagara chips.  Use pause instruction when available to achieve
     this, otherwise use a benign instruction we know blocks the strand
     for some time.

  4) Wire up kcmp

  5) Fix the build of various drivers by removing the unnecessary
     blocking of OF_GPIO when SPARC.

  6) Fix unintended regression wherein of_address_to_resource stopped
     being provided.  Fix from Andreas Larsson.

  7) Fix NULL dereference in leon_handle_ext_irq(), also from Andreas
     Larsson."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix build with mix of modular vs. non-modular crypto drivers.
  sparc: Support atomic64_dec_if_positive properly.
  of/address: sparc: Declare of_address_to_resource() as an extern function for sparc again
  sparc32, leon: Check for existent irq_map entry in leon_handle_ext_irq
  sparc: Add sparc support for platform_get_irq()
  sparc: Allow OF_GPIO on sparc.
  qlogicpti: Fix build warning.
  sparc: Wire up sys_kcmp.
  sparc64: Improvde documentation and readability of atomic backoff code.
  sparc64: Use pause instruction when available.
  sparc64: Fix cpu strand yielding.
  sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads.
      2b1768f3
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6 · affd9a8d
      Linus Torvalds authored 
      Pull cifs fixes from Jeff Layton.

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Do not lookup hashed negative dentry in cifs_atomic_open
  cifs: fix potential buffer overrun in cifs.idmap handling code
      affd9a8d
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 · 487bda54
      Linus Torvalds authored 
      Pull arm64 fixes from Catalin Marinas:
 - correct argument type (pgprot_t) when calling __ioremap()
 - PCI_IOBASE virtual address change
 - use architected event for CPU cycle counter
 - fix ELF core dumping
 - select CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION
 - missing completion for secondary CPU boot
 - booting on systems with all memory beyond 4GB

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: mm: fix booting on systems with no memory below 4GB
  arm64: smp: add missing completion for secondary boot
  arm64: compat: select CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION
  arm64: elf: fix core dumping definitions for GP and FP registers
  arm64: perf: use architected event for CPU cycle counter
  arm64: Move PCI_IOBASE closer to MODULES_VADDR
  arm64: Use pgprot_t as the last argument when invoking __ioremap()
      487bda54
    • Linus Torvalds's avatar
      Merge tag 'stable/for-linus-3.7-rc5-tag' of... · 0020dd0b
      Linus Torvalds authored 
      Merge tag 'stable/for-linus-3.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 "There are three ARM compile fixes (we forgot to export certain
  functions and if the drivers are built as an module - we go belly-up).

  There is also an mismatch of irq_enter() / exit_idle() calls sequence
  which were fixed some time ago in other piece of codes, but failed to
  appear in the Xen code.

  Lastly a fix for to help in the field with troubleshooting in case we
  cannot get the appropriate parameter and also fallback code when
  working with very old hypervisors."

Bug-fixes:
 - Fix compile issues on ARM.
 - Fix hypercall fallback code for old hypervisors.
 - Print out which HVM parameter failed if it fails.
 - Fix idle notifier call after irq_enter.

* tag 'stable/for-linus-3.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/arm: Fix compile errors when drivers are compiled as modules (export more).
  xen/arm: Fix compile errors when drivers are compiled as modules.
  xen/generic: Disable fallback build on ARM.
  xen/events: fix RCU warning, or Call idle notifier after irq_enter()
  xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.
  xen/hypercall: fix hypercall fallback code for very old hypervisors
      0020dd0b
    • David S. Miller's avatar
      sparc64: Fix build with mix of modular vs. non-modular crypto drivers. · 226f7cea
      David S. Miller authored 
      We tried linking in a single built object to hold the device table,
but only works if all of the sparc64 crypto modules get built the same
way (modular vs. non-modular).

Just include the device ID stub into each driver source file so that
the table gets compiled into the correct result in all cases.
Reported-by: default avatarMeelis Roos <mroos@linux.ee>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      226f7cea
    • David S. Miller's avatar
      sparc: Support atomic64_dec_if_positive properly. · 193d2aad
      David S. Miller authored 
      Sparc32 already supported it, as a consequence of using the
generic atomic64 implementation.  And the sparc64 implementation
is rather trivial.

This allows us to set ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE for all
of sparc, and avoid the annoying warning from lib/atomic64_test.c
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      193d2aad
    • Andreas Larsson's avatar
      of/address: sparc: Declare of_address_to_resource() as an extern function for sparc again · 0bce04be
      Andreas Larsson authored 
      This bug-fix makes sure that of_address_to_resource is defined extern for sparc
so that the sparc-specific implementation of of_address_to_resource() is once
again used when including include/linux/of_address.h in a sparc context. A
number of drivers in mainline relies on this function working for sparc.

The bug was introduced in a850a755, "of/address:
add empty static inlines for !CONFIG_OF". Contrary to that commit title, the
static inlines are added for !CONFIG_OF_ADDRESS, and CONFIG_OF_ADDRESS is never
defined for sparc. This is good behavior for the other functions in
include/linux/of_address.h, as the extern functions defined in
drivers/of/address.c only gets linked when OF_ADDRESS is configured. However,
for of_address_to_resource there exists a sparc-specific implementation in
arch/sparc/arch/sparc/kernel/of_device_common.c

Solution suggested by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarAndreas Larsson <andreas@gaisler.com>
Acked-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0bce04be
    • Andreas Larsson's avatar
      sparc32, leon: Check for existent irq_map entry in leon_handle_ext_irq · 20424d85
      Andreas Larsson authored 
      If an irq is being unlinked concurrently with leon_handle_ext_irq,
irq_map[eirq] might be null in leon_handle_ext_irq. Make sure that
this is not dereferenced.
Signed-off-by: default avatarAndreas Larsson <andreas@gaisler.com>
Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      20424d85
    • Andreas Larsson's avatar
      sparc: Add sparc support for platform_get_irq() · 5cf8f7db
      Andreas Larsson authored 
      This adds sparc support for platform_get_irq that in the normal case use
platform_get_resource() to get an irq. This standard approach fails for sparc as
there are no resources of type IORESOURCE_IRQ for irqs for sparc.

Cross platform drivers can then use this standard platform function and work on
sparc instead of having to have a special case for sparc.
Signed-off-by: default avatarAndreas Larsson <andreas@gaisler.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5cf8f7db
  3. 09 Nov, 2012 28 commits
  5. 08 Nov, 2012 3 commits
    • Dave Chinner's avatar
      xfs: fix reading of wrapped log data · 6ce377af
      Dave Chinner authored 
      Commit 44396476 ("xfs: reset buffer pointers before freeing them") in
3.0-rc1 introduced a regression when recovering log buffers that
wrapped around the end of log. The second part of the log buffer at
the start of the physical log was being read into the header buffer
rather than the data buffer, and hence recovery was seeing garbage
in the data buffer when it got to the region of the log buffer that
was incorrectly read.

Cc: <stable@vger.kernel.org> # 3.0.x, 3.2.x, 3.4.x 3.6.x
Reported-by: default avatarTorsten Kaiser <just.for.lkml@googlemail.com>
Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarMark Tinguely <tinguely@sgi.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
      6ce377af
    • Dave Chinner's avatar
      xfs: fix buffer shudown reference count mismatch · 03b1293e
      Dave Chinner authored 
      When we shut down the filesystem, we have to unpin and free all the
buffers currently active in the CIL. To do this we unpin and remove
them in one operation as a result of a failed iclogbuf write. For
buffers, we do this removal via a simultated IO completion of after
marking the buffer stale.

At the time we do this, we have two references to the buffer - the
active LRU reference and the buf log item.  The LRU reference is
removed by marking the buffer stale, and the active CIL reference is
by the xfs_buf_iodone() callback that is run by
xfs_buf_do_callbacks() during ioend processing (via the bp->b_iodone
callback).

However, ioend processing requires one more reference - that of the
IO that it is completing. We don't have this reference, so we free
the buffer prematurely and use it after it is freed. For buffers
marked with XBF_ASYNC, this leads to assert failures in
xfs_buf_rele() on debug kernels because the b_hold count is zero.

Fix this by making sure we take the necessary IO reference before
starting IO completion processing on the stale buffer, and set the
XBF_ASYNC flag to ensure that IO completion processing removes all
the active references from the buffer to ensure it is fully torn
down.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
Reviewed-by: default avatarMark Tinguely <tinguely@sgi.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
      03b1293e
    • Dave Chinner's avatar
      xfs: don't vmap inode cluster buffers during free · 4b62acfe
      Dave Chinner authored 
      Inode buffers do not need to be mapped as inodes are read or written
directly from/to the pages underlying the buffer. This fixes a
regression introduced by commit 611c9946 ("xfs: make XBF_MAPPED the
default behaviour").
Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarMark Tinguely <tinguely@sgi.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
      4b62acfe
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