12 years agoFRV: Correctly determine the address of an illegal instruction
David Howells [Mon, 14 Apr 2008 10:20:59 +0000]
FRV: Correctly determine the address of an illegal instruction

Correctly determine the address of an illegal instruction.  The EPCR0 register
holds this value (masked by EPCR0_PC) if the validity bit is set (masked by
EPCR0_V).  So the test as to whether the contents of the register are usable
should be involve checking the _V bit, not the _PC bits.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoLinux 2.6.25-rc9
Linus Torvalds [Fri, 11 Apr 2008 20:32:29 +0000]
Linux 2.6.25-rc9

12 years agoMerge branch 'docs' of git://git.lwn.net/linux-2.6
Linus Torvalds [Fri, 11 Apr 2008 20:24:16 +0000]
Merge branch 'docs' of git://git.lwn.net/linux-2.6

* 'docs' of git://git.lwn.net/linux-2.6:
  Add additional examples in Documentation/spinlocks.txt
  Move sched-rt-group.txt to scheduler/
  Documentation: move rpc-cache.txt to filesystems/
  Documentation: move nfsroot.txt to filesystems/
  Spell out behavior of atomic_dec_and_lock() in kerneldoc
  Fix a typo in highres.txt
  Fixes to the seq_file document
  Fill out information on patch tags in SubmittingPatches
  Add the seq_file documentation

12 years agoAdd additional examples in Documentation/spinlocks.txt
Mark Fasheh [Thu, 10 Apr 2008 20:55:21 +0000]
Add additional examples in Documentation/spinlocks.txt

Checkpatch will throw an error if code doesn't use the correct initializers
for static spinlocks:

ERROR: Use of SPIN_LOCK_UNLOCKED is deprecated: see Documentation/spinlocks.txt

This is fine, but Documentation/spinlocks.txt isn't very clear on how to
_use_ the new initializers for static variables. To save people time in the
future, I added two small examples of how to fix old-style static
initializers to be more lockdep friendly.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

12 years agoMove sched-rt-group.txt to scheduler/
J. Bruce Fields [Mon, 7 Apr 2008 20:39:38 +0000]
Move sched-rt-group.txt to scheduler/

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

12 years agoDocumentation: move rpc-cache.txt to filesystems/
J. Bruce Fields [Mon, 7 Apr 2008 19:59:04 +0000]
Documentation: move rpc-cache.txt to filesystems/

This file is nfs-related.  (Maybe Documentation/filesystems/ would
benefit from a separate nfs/ directory at some point.)

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

12 years agoDocumentation: move nfsroot.txt to filesystems/
J. Bruce Fields [Mon, 7 Apr 2008 19:59:03 +0000]
Documentation: move nfsroot.txt to filesystems/

Documentation/ is a little large, and filesystems/ seems an obvious
place for this file.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

12 years agoSpell out behavior of atomic_dec_and_lock() in kerneldoc
J. Bruce Fields [Mon, 7 Apr 2008 19:59:05 +0000]
Spell out behavior of atomic_dec_and_lock() in kerneldoc

A little more detail here wouldn't hurt.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

12 years agoFix "$(AS) -traditional" compile breakage caused by asmlinkage_protect
Heiko Carstens [Fri, 11 Apr 2008 11:46:54 +0000]
Fix "$(AS) -traditional" compile breakage caused by asmlinkage_protect

git commit 54a015104136974262afa4b8ddd943ea70dec8a2 ("asmlinkage_protect
replaces prevent_tail_call") causes this build failure on s390:

    AS      arch/s390/kernel/entry64.o
  In file included from arch/s390/kernel/entry64.S:14:
  include/linux/linkage.h:34: error: syntax error in macro parameter list
  make[1]: *** [arch/s390/kernel/entry64.o] Error 1
  make: *** [arch/s390/kernel] Error 2

and some other architectures.  The reason is that some architectures add
the "-traditional" flag to the invocation of $(AS), which disables
variadic macro argument support.

So just surround the new define with an #ifndef __ASSEMBLY__ to prevent
any side effects on asm code.

Cc: Roland McGrath <roland@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoMerge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
Linus Torvalds [Fri, 11 Apr 2008 15:10:51 +0000]
Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c-tiny-usb: New VID/PID pair
  i2c-davinci: Fix lost interrupt
  i2c-ibm_iic: Fast mode parm desc fixup

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 11 Apr 2008 15:10:24 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  [NETNS][IPV6] tcp - assign the netns for timewait sockets
  [IPV4]: Fix byte value boundary check in do_ip_getsockopt().
  BNX2X: Correct bringing chip out of reset
  [NETFILTER]: nf_nat: autoload IPv4 connection tracking
  [NETFILTER]: xt_hashlimit: fix mask calculation
  [XFRM]: xfrm_user: fix selector family initialization
  rt61pci: rt61pci_beacon_update do not free skb twice
  ssb-mipscore: Fix interrupt vectors
  ssb-pcicore: Fix IRQ TPS flag handling
  mac80211: use short_preamble mode from capability if ERP IE not present
  [NET]: Undo code bloat in hot paths due to print_mac().
  [TCP]: Don't allow FRTO to take place while MTU is being probed
  [TCP]: tcp_simple_retransmit can cause S+L
  [TCP]: Fix NewReno's fast rexmit/recovery problems with GSOed skb
  [TCP]: Restore 2.6.24 mark_head_lost behavior for newreno/fack
  nl80211: fix STA AID bug
  b43legacy: fix bcm4303 crash
  iwlwifi: fix n-band association problem
  ipw2200: set MAC address on radiotap interface
  libertas: fix mode initialization problem

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Fri, 11 Apr 2008 15:09:57 +0000]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Fix several regset and ptrace bugs.

12 years agosignalfd: fix for incorrect SI_QUEUE user data reporting
Davide Libenzi [Fri, 11 Apr 2008 04:29:29 +0000]
signalfd: fix for incorrect SI_QUEUE user data reporting

Michael Kerrisk found out that signalfd was not reporting back user data
pushed using sigqueue:

  http://groups.google.com/group/linux.kernel/msg/9397cab8551e3123

The following patch makes signalfd report back the ssi_ptr and ssi_int members
of the signalfd_siginfo structure.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Acked-by: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agopnp: increase number of devices supported per protocol
Bjorn Helgaas [Fri, 11 Apr 2008 04:29:28 +0000]
pnp: increase number of devices supported per protocol

Increase the PNP "number of devices" limit.  We currently use an unsigned
char, which limits us to 256 devices per protocol.  This patch changes that to
an unsigned int.

Not all backends can take advantage of this: we limit ISAPNP to 10 devices in
isapnp_cfg_begin(), and PNPBIOS is limited to 256 devices because the BIOS
interfaces use a one-byte device node number.

But there is no limit on the number of PNPACPI devices we may have.  Large HP
Integrity machines have more than 256, which causes the current "unsigned char
number" to wrap around.  This causes errors like this:

    pnp: PnP ACPI init
    kobject_add failed for 00:00 with -EEXIST, don't try to register things with the same name in the same directory.

    Call Trace:
     [<a000000100010720>] show_stack+0x40/0xa0
     [<a0000001000107b0>] dump_stack+0x30/0x60
     [<a0000001001dbdf0>] kobject_add+0x290/0x2c0
     [<a0000001002bfd40>] device_add+0x160/0x860
     [<a0000001002c0470>] device_register+0x30/0x60
     [<a00000010026ba70>] __pnp_add_device+0x130/0x180
     [<a00000010026bb70>] pnp_add_device+0xb0/0xe0
     [<a0000001007f2730>] pnpacpi_add_device+0x510/0x5a0
     [<a0000001007f2810>] pnpacpi_add_device_handler+0x50/0x80

This patch increases the limit to fix this PNPACPI problem.  It should not
have any adverse effect on ISAPNP or PNPBIOS because their limits are still
enforced in the backends.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agomd: close a livelock window in handle_parity_checks5
Dan Williams [Fri, 11 Apr 2008 04:29:27 +0000]
md: close a livelock window in handle_parity_checks5

If a failure is detected after a parity check operation has been initiated,
but before it completes handle_parity_checks5 will never quiesce operations on
the stripe.

Explicitly handle this case by "canceling" the parity check, i.e.  clear the
STRIPE_OP_CHECK flags and queue the stripe on the handle list again to refresh
any non-uptodate blocks.

Kernel versions >= 2.6.23 are susceptible.

Cc: <stable@kernel.org>
Cc: NeilBrown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agocciss: error: implicit declaration of function 'sg_init_table'
Mike Pagano [Fri, 11 Apr 2008 04:29:26 +0000]
cciss: error: implicit declaration of function 'sg_init_table'

This patch adds the missing include directive <linux/scatterlist.h> to the
cciss.c source file.    This was discovered by our release team when building
the kernel for the Alpha architecture.

Errors were found as references to functions 'sg_init_table' and 'sg_page' do
not exist without the include for Alpha.

Signed-off-by: Mike Pagano <mpagano@gentoo.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agortc: fix platform driver hotplug/coldplug
Kay Sievers [Fri, 11 Apr 2008 04:29:25 +0000]
rtc: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable RTC
platform drivers, to re-enable module auto loading.

[dbrownell@users.sourceforge.net: more drivers, minor fix]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <greg@kroah.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agowatchdog: fix platform driver hotplug/coldplug
Kay Sievers [Fri, 11 Apr 2008 04:29:23 +0000]
watchdog: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable watchdog
drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: more drivers; registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agousb host: fix platform driver hotplug/coldplug
Kay Sievers [Fri, 11 Apr 2008 04:29:22 +0000]
usb host: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable USB HCDs,
to allow re-enable auto loading.

[dbrownell@users.sourceforge.net: more drivers; registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agousb gadget: fix platform driver hotplug/coldplug
Kay Sievers [Fri, 11 Apr 2008 04:29:21 +0000]
usb gadget: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable usb
peripheral drivers, to re-eable module auto loading.

[dbrownell@users.sourceforge.net: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agospi: fix platform driver hotplug/coldplug
Kay Sievers [Fri, 11 Apr 2008 04:29:20 +0000]
spi: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable SPI
platform drivers, to allow module auto loading.

[dbrownell@users.sourceforge.net: more drivers: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoeventfd/kaio integration fix
Davide Libenzi [Fri, 11 Apr 2008 04:29:19 +0000]
eventfd/kaio integration fix

Jeff Roberson discovered a race when using kaio eventfd based notifications.
When it occurs it can lead tomissed wakeups and hung userspace.

This patch fixes the race by moving the notification inside the spinlocked
section of kaio.  The operation is safe since eventfd spinlock and kaio one
are unrelated.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Jeff Roberson <jroberson@chesapeake.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agortc: rtc-s35390a.c needs the bitreverse library
Randy Dunlap [Fri, 11 Apr 2008 04:29:18 +0000]
rtc: rtc-s35390a.c needs the bitreverse library

rtc-s35390a uses BITREVERSE functions so it needs to select that config symbol
to ensure that the functions are built.

  drivers/built-in.o: In function `s35390a_set_datetime':
  linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:144: undefined reference to `byte_rev_table'
  drivers/built-in.o: In function `s35390a_get_datetime':
  linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:163: undefined reference to `byte_rev_table'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agocgroups: include hierarchy ids in /proc/<pid>/cgroup
Paul Menage [Fri, 11 Apr 2008 04:29:16 +0000]
cgroups: include hierarchy ids in /proc/<pid>/cgroup

Extend the /proc/<pid>/cgroup file to include the appropriate hierarchy ID on
each line.

Currently this ID isn't really needed since a hierarchy can be completely
identified by the set of subsystems bound to it, but this is likely to change
in the near future in order to support stateless subsystems and
merging/rebinding of subsystems.  Getting this change into 2.6.25 reduces the
need for an API change later.

Signed-off-by: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoi2c-tiny-usb: New VID/PID pair
Till Harbaum [Fri, 11 Apr 2008 10:07:05 +0000]
i2c-tiny-usb: New VID/PID pair

I have recently bought some USB PIDs from EZPrototypes for my USB projects
and one will be for the i2c-tiny-usb. I have not yet started to use the new
one in the official i2c-tiny-usb firmware since i think it makes sense to get
the change into the kernel before releasing a modified firmware.

This patch adds support for the EZPrototypes USB vid/pid pair used in later
i2c-tiny-usb firmware versions (avrusb v1.06 and up, usbtiny v2.06 and up).

Signed-off-by: Till Harbaum <Till@Harbaum.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

12 years agoi2c-davinci: Fix lost interrupt
Troy Kisky [Fri, 11 Apr 2008 10:07:05 +0000]
i2c-davinci: Fix lost interrupt

DAVINCI_I2C_STR_REG is a write 1 to clear register,
so don't use a read/modify/write cycle.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

12 years agoi2c-ibm_iic: Fast mode parm desc fixup
Paul Mundt [Fri, 11 Apr 2008 10:07:04 +0000]
i2c-ibm_iic: Fast mode parm desc fixup

Noticed this when grepping for fast mode module params, the i2c-ibm_iic
driver was using a non-existent variable for MODULE_PARM_DESC. Fix it up
to reflect what it's actually supposed to be describing.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

12 years ago[NETNS][IPV6] tcp - assign the netns for timewait sockets
Daniel Lezcano [Fri, 11 Apr 2008 03:53:10 +0000]
[NETNS][IPV6] tcp - assign the netns for timewait sockets

Copy the network namespace from the socket to the timewait socket.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Mark Lord <mlord@pobox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agoAdd commentary about the new "asmlinkage_protect()" macro
Linus Torvalds [Fri, 11 Apr 2008 00:35:23 +0000]
Add commentary about the new "asmlinkage_protect()" macro

It's really a pretty ugly thing to need, and some day it will hopefully
be obviated by teaching gcc about the magic calling conventions for the
low-level system call code, but in the meantime we can at least add big
honking comments about why we need these insane and strange macros.

I took my comments from my version of the macro, but I ended up deciding
to just pick Roland's version of the actual code instead (with his
prettier syntax that uses vararg macros).  Thus the previous two commits
that actually implement it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoasmlinkage_protect sys_io_getevents
Roland McGrath [Thu, 10 Apr 2008 22:38:45 +0000]
asmlinkage_protect sys_io_getevents

Use asmlinkage_protect in sys_io_getevents, because GCC for i386 with
CONFIG_FRAME_POINTER=n can decide to clobber an argument word on the
stack, i.e. the user struct pt_regs.  Here the problem is not a tail
call, but just the compiler's use of the stack when it inlines and
optimizes the body of the called function.  This seems to avoid it.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoasmlinkage_protect replaces prevent_tail_call
Roland McGrath [Thu, 10 Apr 2008 22:37:38 +0000]
asmlinkage_protect replaces prevent_tail_call

The prevent_tail_call() macro works around the problem of the compiler
clobbering argument words on the stack, which for asmlinkage functions
is the caller's (user's) struct pt_regs.  The tail/sibling-call
optimization is not the only way that the compiler can decide to use
stack argument words as scratch space, which we have to prevent.
Other optimizations can do it too.

Until we have new compiler support to make "asmlinkage" binding on the
compiler's own use of the stack argument frame, we have work around all
the manifestations of this issue that crop up.

More cases seem to be prevented by also keeping the incoming argument
variables live at the end of the function.  This makes their original
stack slots attractive places to leave those variables, so the compiler
tends not clobber them for something else.  It's still no guarantee, but
it handles some observed cases that prevent_tail_call() did not.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agox86: Simplify cpu_idle_wait
Venki Pallipadi [Thu, 10 Apr 2008 16:49:58 +0000]
x86: Simplify cpu_idle_wait

This patch also resolves hangs on boot:
http://lkml.org/lkml/2008/2/23/263
http://bugzilla.kernel.org/show_bug.cgi?id=10093

The bug was causing once-in-few-reboots 10-15 sec wait during boot on
certain laptops.

Earlier commit 40d6a146629b98d8e322b6f9332b182c7cbff3df added
smp_call_function in cpu_idle_wait() to kick cpus that are in tickless
idle.  Looking at cpu_idle_wait code at that time, code seemed to be
over-engineered for a case which is rarely used (while changing idle
handler).

Below is a simplified version of cpu_idle_wait, which just makes a dummy
smp_call_function to all cpus, to make them come out of old idle handler
and start using the new idle handler.  It eliminates code in the idle
loop to handle cpu_idle_wait.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agolzo: fix typo in decompressor
Harvey Harrison [Thu, 10 Apr 2008 20:38:23 +0000]
lzo: fix typo in decompressor

Shift of a LE value seems strange, probably meant to shift the cpu-order
variable as in the prvious section of the switch statement.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoFRV: Don't make smp_{r, w, }mb() interpolate MEMBAR when CONFIG_SMP=n [try #2]
David Howells [Thu, 10 Apr 2008 15:11:05 +0000]
FRV: Don't make smp_{r, w, }mb() interpolate MEMBAR when CONFIG_SMP=n [try #2]

Don't make smp_{r,w,}mb() interpolate a MEMBAR instruction when CONFIG_SMP=n as
SMP memory barries on UP systems should interpolate a compiler barrier only.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoFRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2]
David Howells [Thu, 10 Apr 2008 15:11:00 +0000]
FRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2]

Make NOMMU-mode work with base addresses other than 0xC0000000 by:

 (1) Giving the code that sets up the protection registers the right address
     in __sdram_base.  Rather than being hard coded to 0xC0000000, the value
     of __page_offset is obtained from the linker script.

 (2) Eliminate the check in __switch_to() that verifies the current thread
     info is in the 0xCxxxxxxx region.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoFRV: Add support for emulation of userspace atomic ops [try #2]
David Howells [Thu, 10 Apr 2008 15:10:55 +0000]
FRV: Add support for emulation of userspace atomic ops [try #2]

Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB-
and ADD-to-memory operations for userspace.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoFRV: Move STACK_TOP_MAX up [try #2]
David Howells [Thu, 10 Apr 2008 15:10:50 +0000]
FRV: Move STACK_TOP_MAX up [try #2]

Move STACK_TOP_MAX up so that we don't try moving the stack above it as that
causes setup_arg_pages() to malfunction.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoFRV: Handle update_mmu_cache() being called when current->mm is NULL [try #2]
David Howells [Thu, 10 Apr 2008 15:10:45 +0000]
FRV: Handle update_mmu_cache() being called when current->mm is NULL [try #2]

Handle update_mmu_cache() being called when current->mm is NULL.

We cache static TLB mappings for the current page table in DAMPR4 and DAMPR5
on the theory that the next data lookup is likely to be in the same general
region, and thus is likely to be mapped by the same page table.  However, we
can't get this information if we can't access the appropriate mm_struct.

If current->mm is NULL, we just clear the cache in the knowledge that the TLB
miss handlers will load it.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoMerge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
Linus Torvalds [Thu, 10 Apr 2008 20:39:29 +0000]
Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6

* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6:
  [XFS] Ensure "both" features2 slots are consistent
  [XFS] Fix superblock features2 field alignment problem
  [XFS] remove shouting-indirection macros from xfs_sb.h

12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Thu, 10 Apr 2008 20:39:07 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cfq-iosched: do not leak ioc_data across iosched switches
  splice: fix infinite loop in generic_file_splice_read()

12 years agoHFS+: fix unlink of links
Roman Zippel [Wed, 9 Apr 2008 15:44:07 +0000]
HFS+: fix unlink of links

Some time ago while attempting to handle invalid link counts, I botched
the unlink of links itself, so this patch fixes this now correctly, so
that only the link count of nodes that don't point to links is ignored.
Thanks to Vlado Plaga <rechner@vlado-do.de> to notify me of this
problem.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years ago[IPV4]: Fix byte value boundary check in do_ip_getsockopt().
David S. Miller [Thu, 10 Apr 2008 08:29:36 +0000]
[IPV4]: Fix byte value boundary check in do_ip_getsockopt().

This fixes kernel bugzilla 10371.

As reported by M.Piechaczek@osmosys.tv, if we try to grab a
char sized socket option value, as in:

  unsigned char ttl = 255;
  socklen_t     len = sizeof(ttl);
  setsockopt(socket, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, &len);

  getsockopt(socket, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, &len);

The ttl returned will be wrong on big-endian, and on both little-
endian and big-endian the next three bytes in userspace are written
with garbage.

It's because of this test in do_ip_getsockopt():

if (len < sizeof(int) && len > 0 && val>=0 && val<255) {

It should allow a 'val' of 255 to pass here, but it doesn't so it
copies a full 'int' back to userspace.

On little-endian that will write the correct value into the location
but it spams on the next three bytes in userspace.  On big endian it
writes the wrong value into the location and spams the next three
bytes.

Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agocfq-iosched: do not leak ioc_data across iosched switches
Fabio Checconi [Thu, 10 Apr 2008 06:28:01 +0000]
cfq-iosched: do not leak ioc_data across iosched switches

When switching scheduler from cfq, cfq_exit_queue() does not clear
ioc->ioc_data, leaving a dangling pointer that can deceive the following
lookups when the iosched is switched back to cfq.  The pattern that can
trigger that is the following:

    - elevator switch from cfq to something else;
    - module unloading, with elv_unregister() that calls cfq_free_io_context()
      on ioc freeing the cic (via the .trim op);
    - module gets reloaded and the elevator switches back to cfq;
    - reallocation of a cic at the same address as before (with a valid key).

To fix it just assign NULL to ioc_data in __cfq_exit_single_io_context(),
that is called from the regular exit path and from the elevator switching
code.  The only path that frees a cic and is not covered is the error handling
one, but cic's freed in this way are never cached in ioc_data.

Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

12 years ago[XFS] Ensure "both" features2 slots are consistent
Eric Sandeen [Thu, 10 Apr 2008 02:19:34 +0000]
[XFS] Ensure "both" features2 slots are consistent

Since older kernels may look in the sb_bad_features2 slot for flags,
rather than zeroing it out on fixup, we should make it equal to the
sb_features2 value.

Also, if the ATTR2 flag was not found prior to features2 fixup, it was not
set in the mount flags, so re-check after the fixup so that the current
session will use the feature.

Also fix up the comments to reflect these changes.

SGI-PV: 980085
SGI-Modid: xfs-linux-melb:xfs-kern:30778a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

12 years ago[XFS] Fix superblock features2 field alignment problem
David Chinner [Thu, 6 Mar 2008 02:45:50 +0000]
[XFS] Fix superblock features2 field alignment problem

Due to the xfs_dsb_t structure not being 64 bit aligned, the last field of
the on-disk superblock can vary in location This causes problems when the
filesystem gets moved to a different platform, or there is a 32 bit
userspace and 64 bit kernel.

This patch detects the defect at mount time, logs a warning such as:

XFS: correcting sb_features alignment problem

in dmesg and corrects the problem so that everything is OK. it also
blacklists the bad field in the superblock so it does not get used for
something else later on.

SGI-PV: 977636
SGI-Modid: xfs-linux-melb:xfs-kern:30539a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

12 years ago[XFS] remove shouting-indirection macros from xfs_sb.h
Eric Sandeen [Thu, 6 Mar 2008 02:44:28 +0000]
[XFS] remove shouting-indirection macros from xfs_sb.h

Remove macro-to-small-function indirection from xfs_sb.h, and remove some
which are completely unused.

SGI-PV: 976035
SGI-Modid: xfs-linux-melb:xfs-kern:30528a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

12 years agosplice: fix infinite loop in generic_file_splice_read()
Jens Axboe [Thu, 10 Apr 2008 06:24:25 +0000]
splice: fix infinite loop in generic_file_splice_read()

There's a quirky loop in generic_file_splice_read() that could go
on indefinitely, if the file splice returns 0 permanently (and not
just as a temporary condition). Get rid of the loop and pass
back -EAGAIN correctly from __generic_file_splice_read(), so we
handle that condition properly as well.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

12 years ago[SPARC]: Fix several regset and ptrace bugs.
David S. Miller [Thu, 10 Apr 2008 02:39:25 +0000]
[SPARC]: Fix several regset and ptrace bugs.

1) ptrace should pass 'current' to task_user_regset_view()

2) When fetching general registers using a 64-bit view, and
   the target is 32-bit, we have to convert.

3) Skip the whole register window get/set code block if
   the user isn't asking to access anything in there.

   Otherwise we have problems if the user doesn't have
   an address space setup.  Fetching ptrace register is
   still valid at such a time, and ptrace does not try
   to access the register window area of the regset.

Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agopop previous section in alternative.c
Steven Rostedt [Wed, 9 Apr 2008 23:04:07 +0000]
pop previous section in alternative.c

gcc expects all toplevel assembly to return to the original section type.
The code in alteranative.c does not do this. This caused some strange bugs
in sched-devel where code would end up in the .rodata section and when
the kernel sets the NX bit on all .rodata, the kernel would crash when
executing this code.

This patch adds a .previous marker to return the code back to the
original section.

Credit goes to Andrew Pinski for telling me it wasn't a gcc bug but a
bug in the toplevel asm code in the kernel.  ;-)

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 10 Apr 2008 01:36:12 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  SELinux: don't BUG if fs reuses a superblock

12 years agoSELinux: don't BUG if fs reuses a superblock
Eric Paris [Wed, 9 Apr 2008 18:08:35 +0000]
SELinux: don't BUG if fs reuses a superblock

I (wrongly) assumed that nfs_xdev_get_sb() would not ever share a superblock
and so cloning mount options would always be correct.  Turns out that isn't
the case and we could fall over a BUG_ON() that wasn't a BUG at all.  Since
there is little we can do to reconcile different mount options this patch
just leaves the sb alone and the first set of options wins.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: James Morris <jmorris@namei.org>

12 years agoBNX2X: Correct bringing chip out of reset
Eliezer Tamir [Wed, 9 Apr 2008 22:25:46 +0000]
BNX2X: Correct bringing chip out of reset

Fixed bug: Wrong register was written to when bringing the chip out of
reset.

[ Bump driver version and release date -DaveM ]

Signed-off-by: Eliezer Tamir <eliezert@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[NETFILTER]: nf_nat: autoload IPv4 connection tracking
Jan Engelhardt [Wed, 9 Apr 2008 22:14:58 +0000]
[NETFILTER]: nf_nat: autoload IPv4 connection tracking

Without this patch, the generic L3 tracker would kick in
if nf_conntrack_ipv4 was not loaded before nf_nat, which
would lead to translation problems with ICMP errors.

NAT does not make sense without IPv4 connection tracking
anyway, so just add a call to need_ipv4_conntrack().

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[NETFILTER]: xt_hashlimit: fix mask calculation
Patrick McHardy [Wed, 9 Apr 2008 22:14:18 +0000]
[NETFILTER]: xt_hashlimit: fix mask calculation

Shifts larger than the data type are undefined, don't try to shift
an u32 by 32. Also remove some special-casing of bitmasks divisible
by 32.

Based on patch by Jan Engelhardt <jengelh@computergmbh.de>.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Wed, 9 Apr 2008 22:10:14 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

12 years ago[XFRM]: xfrm_user: fix selector family initialization
Patrick McHardy [Wed, 9 Apr 2008 22:08:24 +0000]
[XFRM]: xfrm_user: fix selector family initialization

Commit df9dcb45 ([IPSEC]: Fix inter address family IPsec tunnel handling)
broke openswan by removing the selector initialization for tunnel mode
in case it is uninitialized.

This patch restores the initialization, fixing openswan, but probably
breaking inter-family tunnels again (unknown since the patch author
disappeared). The correct thing for inter-family tunnels is probably
to simply initialize the selector family explicitly.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agort61pci: rt61pci_beacon_update do not free skb twice
Daniel Wagner [Wed, 9 Apr 2008 14:29:01 +0000]
rt61pci: rt61pci_beacon_update do not free skb twice

The layer above will free the skb in an error case.

Signed-off-by: Daniel Wagner <wagi@monom.org>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Wed, 9 Apr 2008 15:06:27 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata/sata_fsl: Remove unused variable in sata_fsl_probe
  pata_sil680: Fix build on arch/ppc

12 years agossb-mipscore: Fix interrupt vectors
Michael Buesch [Tue, 8 Apr 2008 09:17:29 +0000]
ssb-mipscore: Fix interrupt vectors

This fixes assignment of the interrupt vectors on the SSB MIPS core.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agossb-pcicore: Fix IRQ TPS flag handling
Larry Finger [Tue, 8 Apr 2008 08:28:24 +0000]
ssb-pcicore: Fix IRQ TPS flag handling

This fixes the TPS flag handling for the SSB pcicore driver.
This fixes interrupts on some devices.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agomac80211: use short_preamble mode from capability if ERP IE not present
Vladimir Koutny [Mon, 31 Mar 2008 15:05:10 +0000]
mac80211: use short_preamble mode from capability if ERP IE not present

When associating to a b-only AP where there is no ERP IE, short preamble
mode is left at previous state (probably also protection mode). In this
case, disable protection and use short preamble mode as specified in
capability field. The same is done if capability field is changed on-the-fly.

Signed-off-by: Vladimir Koutny <vlado@ksp.sk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agoata/sata_fsl: Remove unused variable in sata_fsl_probe
Johann Felix Soden [Sun, 6 Apr 2008 13:10:54 +0000]
ata/sata_fsl: Remove unused variable in sata_fsl_probe

In sata_fsl_probe memory is allocated but never used or deallocated.
Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=10404

Thanks to Daniel Marjamäki for the bug report.

Reported-by: Daniel Marjamäki <danielm77@spray.se>
Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

12 years agopata_sil680: Fix build on arch/ppc
Benjamin Herrenschmidt [Tue, 8 Apr 2008 21:51:07 +0000]
pata_sil680: Fix build on arch/ppc

Commit 0f436eff54f90419ac1b8accfb3e6e17c4b49a4e breaks build on
arch/ppc as it doesn't implement the machine_is() macro.

This fixes it by using CONFIG_PPC_MERGE instead which represents
arch/powerpc only, while CONFIG_PPC is set for both.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

12 years agoMerge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Wed, 9 Apr 2008 01:26:31 +0000]
Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  SUNRPC: Fix a memory leak in rpc_create()
  fix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap_private()
  NFS: initialize flags field in nfs_open_context
  SUNRPC: don't call flush_dcache_page() with an invalid pointer

12 years agomtd/chips: add missing set_current_state() to cfi_{amdstd,staa}_sync()
Dmitry Adamushko [Wed, 9 Apr 2008 00:41:59 +0000]
mtd/chips: add missing set_current_state() to cfi_{amdstd,staa}_sync()

cfi_amdstd_sync() and cfi_staa_sync() call schedule() without changing task's
state appropriately.

In case of e.g.  chip->state == FL_ERASING, cfi_*_sync() will be busy-looping
either redundantly for a fixed interval of time (for SCHED_NORMAL tasks) or
possibly endlessly (for RT tasks and UP).

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agospi: spi_bfin5xx: remove unused label
Michael Hennerich [Wed, 9 Apr 2008 00:41:58 +0000]
spi: spi_bfin5xx: remove unused label

Remove unused label, and associated compiler warning.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agospi: documentation tweaks
David Brownell [Wed, 9 Apr 2008 00:41:58 +0000]
spi: documentation tweaks

Update SPI documentation to clarify some areas of recent confusion: clock
polarity takes effect when chipselect goes active; and zero length buffers are
OK in certain cases.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agospi: spi_bfin5xx: fix probe() sequencing
Vitja Makarov [Wed, 9 Apr 2008 00:41:57 +0000]
spi: spi_bfin5xx: fix probe() sequencing

Fix bug in SPI probe: first initialize peripheral pins, and just after
register spi master device.  This fixes problems with SPI drivers built-in
kernel.

Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agospi: spi_bfin5xx build fix
Mike Frysinger [Wed, 9 Apr 2008 00:41:57 +0000]
spi: spi_bfin5xx build fix

Fix breakage cause by overzealous line wrapping; there should be only one
format string.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoacpi: fix "buggy BIOS check" when CPUs are hot removed
Alok Kataria [Wed, 9 Apr 2008 00:41:56 +0000]
acpi: fix "buggy BIOS check" when CPUs are hot removed

Fixes a BUG in ACPI hotplugging.

processor_device_array[pr->id] needs to be set to NULL when removing a CPU.
Else the "buggy BIOS check" in acpi_processor_start mistakenly fires when a
CPU is removed from the system and then later re-added.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Dan Arai <arai@vmware.com>
Cc: Len Brown <lenb@kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoes1968: fix sleep-while-holding-lock bug
Arjan van de Ven [Wed, 9 Apr 2008 00:41:55 +0000]
es1968: fix sleep-while-holding-lock bug

snd_es1968_ac97_read() calls snd_es1968_ac97_wait() first outside a locked
area, and later, while holding a lock.

snd_es1968_ac97_wait() has a polling loop with a cond_resched() inside it..
which sleeps, so the second call is invalid.

This patch adds a version of the wait function that just pure polls.  While
this is not very elegant in principle, it's very likely the easiest thing to
do here, we already checked if the chip was ready (while yielding) just
before, so it is very unlikely to take a long time here.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agomemcg: fix node_state handling
KAMEZAWA Hiroyuki [Wed, 9 Apr 2008 00:41:54 +0000]
memcg: fix node_state handling

This should be N_NORMAL_MEMORY.

N_NORMAL_MEMORY is "true" if a node has memory for the kernel.  N_HIGH_MEMORY
is "true" if a node has memory for HIGHMEM.  (If CONFIG_HIGHMEM=n, always
"true")

This check is used for testing whether we can use kmalloc_node() on a node.
Then, if there is a node which only contains HIGHMEM, the system will call
kmalloc_node() which doesn't contain memory for the kernel.  If it happens
under SLUB, the kernel will panic.  I think this only happens on x86_32-numa.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoacpi thermal: fix result check
Krzysztof Helt [Wed, 9 Apr 2008 00:41:52 +0000]
acpi thermal: fix result check

thermal_zone_device_register() uses the ERR_PTR macro on its return values.  A
correct check is to use the IS_ERR() macro.

The 2.6.25 kernels panic on Compaq AP550 without this patch as it has more
then 10 (THERMAL_MAX_TRIPS) trip points (there are 12).

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoub: remove BUG() after __blk_end_request and fix the condition causing it
Pete Zaitcev [Wed, 9 Apr 2008 00:41:51 +0000]
ub: remove BUG() after __blk_end_request and fix the condition causing it

When __blk_end_request returns nonzero, it means that the request was
not completely processed and some BIOs are still attached. Since we
have dequeued it by that time, it means leaking requests and hanging
processes, which is why BUG() was in there. In ub this happens if
a packet request ends normally, but with residue (e.g. when scsi_id
issues INQUIRY).

The fix is to make sure that arguments passed to __blk_end_request
are correct: the full request length and not just transferred length.
The transferred length is indicated to applications by adjusting
rq->data_len with old, unchanged code outside of this patch.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Cc: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Cc: Greg KH <greg@kroah.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoSUNRPC: Fix a memory leak in rpc_create()
Chuck Lever [Mon, 7 Apr 2008 20:52:44 +0000]
SUNRPC: Fix a memory leak in rpc_create()

Commit 510deb0d was supposed to move the xprt_create_transport() call in
rpc_create(), but neglected to remove the old call site.  This resulted in
a transport leak after every rpc_create() call.

This leak is present in 2.6.24 and 2.6.25.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

12 years agofix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap_...
Bryan Wu [Wed, 2 Apr 2008 03:23:39 +0000]
fix bug - executing FDPIC ELF on NFS mount triggers BUG() at mm/nommu.c:862:/do_mmap_private()

NFS needs a NOMMU version mmap function to support uClinux on NOMMU machine
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_id=141&tracker_item_id=3992

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

12 years agoNFS: initialize flags field in nfs_open_context
Jeff Layton [Mon, 31 Mar 2008 19:01:58 +0000]
NFS: initialize flags field in nfs_open_context

The nfs_open_context struct had a "flags" field added recently, but the
allocator isn't initializing it. It also looks like the allocator isn't
initializing the mode or list either, but they seem to be overwritten
by the caller, so that's less of an issue.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

12 years agoSUNRPC: don't call flush_dcache_page() with an invalid pointer
Trond Myklebust [Mon, 31 Mar 2008 21:02:02 +0000]
SUNRPC: don't call flush_dcache_page() with an invalid pointer

Fix a problem in _copy_to_pages(), whereby it may call flush_dcache_page()
with an invalid pointer due to the fact that 'pgto' gets incremented
beyond the end of the page array. Fix is to exit the loop without this
unnecessary increment of pgto.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

12 years ago[NET]: Undo code bloat in hot paths due to print_mac().
David S. Miller [Tue, 8 Apr 2008 23:50:44 +0000]
[NET]: Undo code bloat in hot paths due to print_mac().

If print_mac() is used inside of a pr_debug() the compiler
can't see that the call is redundant so still performs it
even of pr_debug() ends up being a nop.

So don't use print_mac() in such cases in hot code paths,
use MAC_FMT et al. instead.

As noted by Joe Perches, pr_debug() could be modified to
handle this better, but that is a change to an interface
used by the entire kernel and thus needs to be validated
carefully.  This here is thus the less risky fix for
2.6.25

Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[TCP]: Don't allow FRTO to take place while MTU is being probed
Ilpo Järvinen [Tue, 8 Apr 2008 05:33:57 +0000]
[TCP]: Don't allow FRTO to take place while MTU is being probed

MTU probe can cause some remedies for FRTO because the normal
packet ordering may be violated allowing FRTO to make a wrong
decision (it might not be that serious threat for anything
though). Thus it's safer to not run FRTO while MTU probe is
underway.

It seems that the basic FRTO variant should also look for an
skb at probe_seq.start to check if that's retransmitted one
but I didn't implement it now (plain seqno in window check
isn't robust against wraparounds).

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[TCP]: tcp_simple_retransmit can cause S+L
Ilpo Järvinen [Tue, 8 Apr 2008 05:33:07 +0000]
[TCP]: tcp_simple_retransmit can cause S+L

This fixes Bugzilla #10384

tcp_simple_retransmit does L increment without any checking
whatsoever for overflowing S+L when Reno is in use.

The simplest scenario I can currently think of is rather
complex in practice (there might be some more straightforward
cases though). Ie., if mss is reduced during mtu probing, it
may end up marking everything lost and if some duplicate ACKs
arrived prior to that sacked_out will be non-zero as well,
leading to S+L > packets_out, tcp_clean_rtx_queue on the next
cumulative ACK or tcp_fastretrans_alert on the next duplicate
ACK will fix the S counter.

More straightforward (but questionable) solution would be to
just call tcp_reset_reno_sack() in tcp_simple_retransmit but
it would negatively impact the probe's retransmission, ie.,
the retransmissions would not occur if some duplicate ACKs
had arrived.

So I had to add reno sacked_out reseting to CA_Loss state
when the first cumulative ACK arrives (this stale sacked_out
might actually be the explanation for the reports of left_out
overflows in kernel prior to 2.6.23 and S+L overflow reports
of 2.6.24). However, this alone won't be enough to fix kernel
before 2.6.24 because it is building on top of the commit
1b6d427bb7e ([TCP]: Reduce sacked_out with reno when purging
write_queue) to keep the sacked_out from overflowing.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[TCP]: Fix NewReno's fast rexmit/recovery problems with GSOed skb
Ilpo Järvinen [Tue, 8 Apr 2008 05:32:38 +0000]
[TCP]: Fix NewReno's fast rexmit/recovery problems with GSOed skb

Fixes a long-standing bug which makes NewReno recovery crippled.
With GSO the whole head skb was marked as LOST which is in
violation of NewReno procedure that only wants to mark one packet
and ended up breaking our TCP code by causing counter overflow
because our code was built on top of assumption about valid
NewReno procedure. This manifested as triggering a WARN_ON for
the overflow in a number of places.

It seems relatively safe alternative to just do nothing if
tcp_fragment fails due to oom because another duplicate ACK is
likely to be received soon and the fragmentation will be retried.

Special thanks goes to Soeren Sonnenburg <kernel@nn7.de> who was
lucky enough to be able to reproduce this so that the warning
for the overflow was hit. It's not as easy task as it seems even
if this bug happens quite often because the amount of outstanding
data is pretty significant for the mismarkings to lead to an
overflow.

Because it's very late in 2.6.25-rc cycle (if this even makes in
time), I didn't want to touch anything with SACK enabled here.
Fragmenting might be useful for it as well but it's more or less
a policy decision rather than mandatory fix. Thus there's no need
to rush and we can postpone considering tcp_fragment with SACK
for 2.6.26.

In 2.6.24 and earlier, this very same bug existed but the effect
is slightly different because of a small changes in the if
conditions that fit to the patch's context. With them nothing
got lost marker and thus no retransmissions happened.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years ago[TCP]: Restore 2.6.24 mark_head_lost behavior for newreno/fack
Ilpo Järvinen [Tue, 8 Apr 2008 05:31:38 +0000]
[TCP]: Restore 2.6.24 mark_head_lost behavior for newreno/fack

The fast retransmission can be forced locally to the rfc3517
branch in tcp_update_scoreboard instead of making such fragile
constructs deeper in tcp_mark_head_lost.

This is necessary for the next patch which must not have
loopholes for cnt > packets check. As one can notice,
readability got some improvements too because of this :-).

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

12 years agonl80211: fix STA AID bug
Johannes Berg [Mon, 7 Apr 2008 12:35:46 +0000]
nl80211: fix STA AID bug

This fixes the STA AID setting and actually makes hostapd/mac80211
work properly in presence of power-saving stations.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agob43legacy: fix bcm4303 crash
Stefano Brivio [Sun, 6 Apr 2008 15:05:07 +0000]
b43legacy: fix bcm4303 crash

This fixes an hard crash which happened upon driver loading on bcm4303 rev.
2 devices.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agoiwlwifi: fix n-band association problem
Abhijeet Kolekar [Fri, 4 Apr 2008 21:32:01 +0000]
iwlwifi: fix n-band association problem

This patch enables the IWL4965_HT flag (n-band) in Kconfig.
Removed the "depends on n" from Kconfig for config IWL4965_HT

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agoipw2200: set MAC address on radiotap interface
Daniel Drake [Wed, 2 Apr 2008 19:33:54 +0000]
ipw2200: set MAC address on radiotap interface

Commit bada339ba24dee9e143bfb42e1dc61f146619846 enforces that all
interfaces have a valid MAC address before they are brought up.

ipw2200 does not assign a MAC address to it's radiotap interface, meaning
that the radiotap interface cannot be brought up in 2.6.24.
https://bugs.gentoo.org/show_bug.cgi?id=215714

Fix this by copying the MAC address from the real interface.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agolibertas: fix mode initialization problem
Holger Schurig [Wed, 2 Apr 2008 14:34:51 +0000]
libertas: fix mode initialization problem

After moving lbs_find_best_network_ssid() from scan.c to assoc.c gcc was
able to deduce that new_mode might stay uninitialized.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Tue, 8 Apr 2008 02:15:35 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  SELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs code

12 years agopvrusb2: fix broken build due to patch order dependency
Michael Krufky [Mon, 7 Apr 2008 00:40:17 +0000]
pvrusb2: fix broken build due to patch order dependency

Fix broken build due to patch order dependency.  A future patch requires
the lines that break the current build.  Disable those lines for now.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoSELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs code
Stephen Smalley [Fri, 4 Apr 2008 12:46:05 +0000]
SELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs code

More cases where SELinux must not re-enter the fs code. Called from the
d_instantiate security hook.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>

12 years agoMerge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstrea...
Linus Torvalds [Mon, 7 Apr 2008 21:54:07 +0000]
Merge branch 'upstream' of git://git./linux/kernel/git/ralf/upstream-linus

* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus:
  [MIPS] Handle aliases in vmalloc correctly.

12 years ago[MIPS] Handle aliases in vmalloc correctly.
Ralf Baechle [Sat, 5 Apr 2008 14:13:23 +0000]
[MIPS] Handle aliases in vmalloc correctly.

flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which -
having been deprecated - turned into a nop ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Mon, 7 Apr 2008 21:26:53 +0000]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  siimage: fix kernel oops on PPC 44x

12 years agosiimage: fix kernel oops on PPC 44x
Sergei Shtylyov [Mon, 7 Apr 2008 21:30:10 +0000]
siimage: fix kernel oops on PPC 44x

Fix kernel oops due to machine check occuring in init_chipset_siimage() on PPC
44x platforms.  These 32-bit CPUs have 36-bit physical address and PCI I/O and
memory spaces are mapped beyond 4 GB; arch/ppc/ code has a fixup in ioremap()
that creates an illusion of the PCI I/O and memory resources being mapped below
4 GB, while arch/powerpc/ code got rid of this fixup with PPC 44x having instead
CONFIG_RESOURCES_64BIT=y -- this causes the resources to be truncated to 32-bit
'unsigned long' type in this driver, and so non-existant memory being ioremap'ed
and then accessed...

Thanks to Valentine Barshak for providing an initial patch and explanations.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

12 years agovirtio_net: remove overzealous printk
Anthony Liguori [Mon, 7 Apr 2008 20:33:16 +0000]
virtio_net: remove overzealous printk

The 'disable_cb' is really just a hint and as such, it's possible for more
work to get queued up while callbacks are disabled.  Under stress with an
SMP guest, this printk triggers very frequently.  There is no race here, this
is how things are designed to work so let's just remove the printk.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoRevert "smc91x: fix build breakage from the SMC_GET_MAC_ADDR API upgrade"
Linus Torvalds [Mon, 7 Apr 2008 20:20:08 +0000]
Revert "smc91x: fix build breakage from the SMC_GET_MAC_ADDR API upgrade"

This reverts commit 9e6db60825ef7e7999abc610ce256ba768e58162, which was
merged without the API it needed, causing build breakage.

Reported-by: Bryan Wu <cooloney@kernel.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux...
Linus Torvalds [Mon, 7 Apr 2008 20:14:37 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/x86/linux-2.6-x86

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix 64-bit asm NOPS for CONFIG_GENERIC_CPU
  x86: fix call to set_cyc2ns_scale() from time_cpufreq_notifier()
  revert "x86: tsc prevent time going backwards"

12 years agovirtio: remove overzealous BUG_ON.
Rusty Russell [Mon, 7 Apr 2008 04:30:28 +0000]
virtio: remove overzealous BUG_ON.

The 'disable_cb' callback is designed as an optimization to tell the host
we don't need callbacks now.  As it is not reliable, the debug check is
overzealous: it can happen on two CPUs at the same time.  Document this.

Even if it were reliable, the virtio_net driver doesn't disable
callbacks on transmit so the START_USE/END_USE debugging reentrance
protection can be easily tripped even on UP.

Thanks to Balaji Rao for the bug report and testing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
CC: Balaji Rao <balajirrao@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agox86: fix 64-bit asm NOPS for CONFIG_GENERIC_CPU
Suresh Siddha [Mon, 7 Apr 2008 18:56:34 +0000]
x86: fix 64-bit asm NOPS for CONFIG_GENERIC_CPU

ASM_NOP's for 64-bit kernel with CONFIG_GENERIC_CPU is broken
with the recent x86 nops merge. They were using GENERIC_NOPS
which will truncate the upper 32bits of %rsi, because of the missing
64bit rex prefix.

For now, fall back ASM NOPS for generic cpu to K8 NOPS, similar
to the code before the wrong x86 nop merge.

This should resolve the crash seen by Ingo on a test-system:

BUG: unable to handle kernel paging request at 00000000d80d8ee8
IP: [<ffffffff802121af>] save_i387_ia32+0x61/0xd8
PGD b8e0067 PUD 51490067 PMD 0
Oops: 0000 [1] SMP
CPU 2
Modules linked in:
Pid: 3871, comm: distcc Not tainted 2.6.25-rc7-sched-devel.git-x86-latest.git #359
RIP: 0010:[<ffffffff802121af>]  [<ffffffff802121af>] save_i387_ia32+0x61/0xd8
RSP: 0000:ffff81003abd3cb8  EFLAGS: 00010246
RAX: ffff810082e93400 RBX: 00000000ffc37f84 RCX: ffff8100d80d8ee0
RDX: 0000000000000000 RSI: 00000000d80d8ee0 RDI: ffff810082e93400
RBP: 00000000ffc37fdc R08: 00000000ffc37f88 R09: 0000000000000008
R10: ffff81003abd2000 R11: 0000000000000000 R12: ffff810082e93400
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff81011fb12dc0(0063) knlGS:00000000f7f1a6c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000d80d8ee8 CR3: 0000000076922000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process distcc (pid: 3871, threadinfo ffff81003abd2000, task ffff8100d80d8ee0)
Stack:  ffff8100bb670380 ffffffff8026de50 0000000000000118 0000000000000002
 0000000000000002 ffff81003abd3e68 ffff81003abd3ed8 ffff81003abd3de8
 ffff81003abd3d18 ffffffff80229785 ffff8100d80d8ee0 ffff810001041280
Call Trace:
 [<ffffffff8026de50>] ? __generic_file_aio_write_nolock+0x343/0x377
 [<ffffffff80229785>] ? update_curr+0x54/0x64
 [<ffffffff80227cd3>] ? ia32_setup_sigcontext+0x125/0x1d2
 [<ffffffff8022839f>] ? ia32_setup_frame+0x73/0x1a5
 [<ffffffff8020b2a5>] ? do_notify_resume+0x1aa/0x7db
 [<ffffffff8024ae8c>] ? getnstimeofday+0x31/0x85
 [<ffffffff80249858>] ? ktime_get_ts+0x17/0x48
 [<ffffffff80249933>] ? ktime_get+0xc/0x41
 [<ffffffff8024973e>] ? hrtimer_nanosleep+0x75/0xd5
 [<ffffffff80249261>] ? hrtimer_wakeup+0x0/0x21
 [<ffffffff8020bfbc>] ? int_signal+0x12/0x17
 [<ffffffff8030e6b3>] ? dummy_file_free_security+0x0/0x1

Code: a6 08 05 00 00 f6 40 14 01 74 34 4c 89 e7 48 0f ae 07 48 8b 86 08 05 00 00 80 78 02 00 79 02 db e2 90 8d b4 26 00 00 00 00 89 f6 <48> 8b 46 08 83 60 14 fe 0f 20 c0 48 83 c8 08 0f 22 c0 eb 07 c6

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>