Commit graph

97397 commits

Author SHA1 Message Date
Alan Cox
173d95bc2e [WATCHDOG 03/57] ali: watchdog locking and style
Clean up and check locking

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-27 15:22:43 +00:00
Alan Cox
b6b4d9b8d0 [WATCHDOG 02/57] clean up and check advantech watchdog
Clean up the advantech watchdog code and inspect for BKL problems

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-27 15:22:40 +00:00
Alan Cox
94da1e2eff [WATCHDOG 01/57] Clean acquirewdt and check for BKL dependancies
This brings the file into line with coding style.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-27 15:22:12 +00:00
Linus Torvalds
e490517a03 Linux 2.6.26-rc4 2008-05-26 11:08:11 -07:00
Oleg Nesterov
cbaffba12c posix timers: discard SI_TIMER signals on exec
Based on Roland's patch. This approach was suggested by Austin Clements
from the very beginning, and then by Linus.

As Austin pointed out, the execing task can be killed by SI_TIMER signal
because exec flushes the signal handlers, but doesn't discard the pending
signals generated by posix timers. Perhaps not a bug, but people find this
surprising. See http://bugzilla.kernel.org/show_bug.cgi?id=10460

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Austin Clements <amdragon+kernelbugzilla@mit.edu>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-26 10:37:07 -07:00
Oleg Nesterov
c8e85b4f4b posix timers: sigqueue_free: don't free sigqueue if it is queued
Currently sigqueue_free() removes sigqueue from list, but doesn't cancel the
pending signal. This is not consistent, the task should either receive the
"full" signal along with siginfo_t, or it shouldn't receive the signal at all.

Change sigqueue_free() to clear SIGQUEUE_PREALLOC but leave sigqueue on list
if it is queued.

This is a user-visible change. If the signal is blocked, it stays queued
after sys_timer_delete() until unblocked with the "stale" si_code/si_value,
and of course it is still counted wrt RLIMIT_SIGPENDING which also limits
the number of posix timers.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Austin Clements <amdragon+kernelbugzilla@mit.edu>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-26 10:37:06 -07:00
Linus Torvalds
84a881657d 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: Align i2c_device_id
  tuner: Do not alter i2c_client.name
2008-05-26 10:24:06 -07:00
Linus Torvalds
1434b65731 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  slub: ksize() abuse checks
  slob: Fix to return wrong pointer
2008-05-26 10:21:26 -07:00
Linus Torvalds
4934ed888e Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26:
  sh: Drop broken URAM support on SH7723.
  sh: update Migo-R defconfig
  sh: use sm501 8250 mfd support on r2d boards
  sh: add probe support for new sh7723 cut
  sh: fix VPU interrupt vector for sh7723
  sh: fix USBF resource for sh7722
2008-05-26 10:20:40 -07:00
Linus Torvalds
0dfdf77ab8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: global_reg_snapshot is not for userspace
2008-05-26 10:14:37 -07:00
Linus Torvalds
c5e6fd28e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (52 commits)
  vlan: Use bitmask of feature flags instead of seperate feature bits
  fmvj18x_cs: add NextCom NC5310 rev B support
  xirc2ps_cs: re-initialize the multicast address in do_reset
  3C509: rx_bytes should not be increased when alloc_skb failed
  NETFRONT: Use __skb_queue_purge()
  VIRTIO: Use __skb_queue_purge()
  phylib: do EXPORT_SYMBOL on get_phy_id
  netlink: Fix nla_parse_nested_compat() to call nla_parse() directly
  WAN: protect HDLC proto list while insmod/rmmod
  drivers/net/fs_enet: remove null pointer dereference
  S2io: Version update for napi and MSI-X patches
  S2io: Added napi support when MSIX is enabled.
  S2io: Move all the transmit completions to a single msi-x (alarm) vector
  drivers/net/ehea - remove unnecessary memset after kzalloc
  au1000_eth: remove useless check
  Blackfin EMAC Driver: Removed duplicated include <linux/ethtool.h>
  cpmac bugfixes and enhancements
  e1000e: use resource_size_t, not unsigned long, for phys addrs
  net/usb: add support for Apple USB Ethernet Adapter
  uli526x: add support for netpoll
  ...
2008-05-26 10:14:02 -07:00
Jiri Slaby
2548baa07d i2c: Align i2c_device_id
Align i2c_device_id.driver_data to 8 bytes to not fail on crossbuilds.

(Added in d2653e92732bd3911feff6bee5e23dbf959381db.)

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-05-26 16:08:40 +02:00
Michael Krufky
7271e60a95 tuner: Do not alter i2c_client.name
The tuner driver used to change i2c_client.name for its own needs, but
it really shouldn't, as this field is used by i2c-core to do the
device/driver matching. So, create and use a separate field for the
tuner driver needs.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-05-26 16:08:40 +02:00
Adrian Bunk
551dec47bb sparc64: global_reg_snapshot is not for userspace
global_reg_snapshot shouldn't be visible in our userspace headers.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-25 22:50:16 -07:00
Paul Mundt
9c28faaab1 sh: Drop broken URAM support on SH7723.
This was copied over from the previous MobileR bits, which doesn't
apply to R2. The URAM block on R2 is recycled for the L2 instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-26 11:45:45 +09:00
Linus Torvalds
b3733034f1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  Kconfig: introduce ARCH_DEFCONFIG to DEFCONFIG_LIST
  .gitignore: match ncscope.out
  scripts/ver_linux use 'gcc -dumpversion'
2008-05-25 15:00:27 -07:00
Linus Torvalds
c8ff99a7c2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] Add ICH9DO into the iTCO_wdt.c driver
  [WATCHDOG] Fix booke_wdt.c on MPC85xx SMP system's
  [WATCHDOG] Add a watchdog driver based on the CS5535/CS5536 MFGPT timers
  [WATCHDOG] hpwdt: Fix NMI handling.
  [WATCHDOG] Blackfin Watchdog Driver: split platform device/driver
  [WATCHDOG] Add w83697h_wdt early_disable option
  [WATCHDOG] Make w83697h_wdt timeout option string similar to others
  [WATCHDOG] Make w83697h_wdt void-like functions void
2008-05-25 14:59:59 -07:00
Linus Torvalds
32522bfdae Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  [ALSA] hda - Fix capture mute Widget for stac9250/9251
  [ALSA] snd-pcsp - fix pcsp_treble_info() to honour an item number
  [ALSA] hda - Added support for Foxconn P35AX-S mainboard
  [ALSA] hda - Fix COEF and EAPD in ALC889 auto-configuration mode
  [ALSA] hda - Fix noise on VT1708 codec
  [ALSA] hda - Add model for ASUS P5K-E/WIFI-AP
2008-05-25 14:59:27 -07:00
Sam Ravnborg
73531905ed Kconfig: introduce ARCH_DEFCONFIG to DEFCONFIG_LIST
init/Kconfig contains a list of configs that are searched
for if 'make *config' are used with no .config present.
Extend this list to look at the config identified by
ARCH_DEFCONFIG.

With this change we now try the defconfig targets last.

This fixes a regression reported
by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
2008-05-25 23:03:18 +02:00
Jike Song
9723c046bd .gitignore: match ncscope.out
Sometimes I got this:

    $ git-status
    {snip}
    # On branch master
    # Untracked files:
    #   (use "git add <file>..." to include in what will be committed)
    #
    #       ncscope.out
    nothing added to commit but untracked files present (use "git add"
to track)

Fix it.

Signed-off-by: Jike Song <albcamus@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-05-25 23:02:48 +02:00
Gabriel C
656a3f7978 scripts/ver_linux use 'gcc -dumpversion'
These magic greps and hacks in ver_linux to get the gcc version always break after some gcc releases.

Since now gcc >4.3 allows compiling with '--with-pkgversion' ( which can be everything 'My Cool Gcc' or something )
ver_linux will report random junk for these.

Simply use 'gcc -dumpversion' to get the gcc version which should always work.

Signed-off-by: Gabriel C <nix.or.die@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-05-25 23:02:43 +02:00
Mauro Carvalho Chehab
587755f1f6 [ALSA] hda - Fix capture mute Widget for stac9250/9251
Fix capture mute widget for STAC9250/9251 codecs.  The widget 0x09
has no mute but 0x14 does actually.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-05-25 18:21:18 +02:00
Stas Sergeev
97e08f5d73 [ALSA] snd-pcsp - fix pcsp_treble_info() to honour an item number
This solves the problem with mixers wrongly displaying the PWM freq.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-05-25 18:21:10 +02:00
Gabriel C
a49056da03 [WATCHDOG] Add ICH9DO into the iTCO_wdt.c driver
Add the Intel ICH9DO controller ID's for the iTCO_wdt kernel driver and bump
the driver version.

Tested on an P5E-VM DO ASUS motherboard.

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-05-25 09:45:39 +00:00
Chen Gong
f172ddc61a [WATCHDOG] Fix booke_wdt.c on MPC85xx SMP system's
On Book-E SMP systems each core has its own private watchdog.  If only one
watchdog is enabled, when the core that doesn't enable the watchdog is hung,
system can't reset because no watchdog is running on it.  That's bad.  It
means we must enable watchdogs on both cores.

We can use smp_call_function() to send appropriate messages to all the other
cores to enable and update the watchdog.

Signed-off-by: Chen Gong <g.chen@freescale.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-05-25 09:43:06 +00:00
Jordan Crouse
0b36086b5d [WATCHDOG] Add a watchdog driver based on the CS5535/CS5536 MFGPT timers
Add a watchdog timer based on the MFGPT timers in the CS5535/CS5536
companion chips to the AMD Geode GX and LX processors.  Only caveat
is that the BIOS must provide at least a one free timer, and most
do not.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:02:17 +00:00
Mingarelli, Thomas
7f7f894c6d [WATCHDOG] hpwdt: Fix NMI handling.
I need to just return in case it's not my NMI so someone else can take a look
at it (and reset die_nmi_called to 0 in case I actually do get one that's mine
to handle).

Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:01:48 +00:00
Mike Frysinger
93539b1946 [WATCHDOG] Blackfin Watchdog Driver: split platform device/driver
- split platform device/driver registering from actual watchdog device/driver
   registering so that we can cleanly load/unload
 - fixup __initdata with __initconst and __devinitdata with __devinitconst

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:01:36 +00:00
Samuel Tardieu
6fd656012b [WATCHDOG] Add w83697h_wdt early_disable option
Pádraig Brady requested the possibility of not disabling the watchdog
at module load time or kernel boot time if it had been previously enabled
in the bios. It may help rebooting the machine if it freezes before the
userland daemon kicks in.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Cc: Pádraig Brady <P@draigBrady.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:00:51 +00:00
Samuel Tardieu
5794a9f412 [WATCHDOG] Make w83697h_wdt timeout option string similar to others
Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:00:49 +00:00
Samuel Tardieu
03315adca7 [WATCHDOG] Make w83697h_wdt void-like functions void
Some non-exported functions always returned 0. Mark them void instead.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-05-25 09:00:47 +00:00
Linus Torvalds
eb90d81d03 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
  x86: prevent PGE flush from interruption/preemption
  x86: use explicit copy in vdso_gettimeofday()
  namespacecheck: automated fixes
  x86/xen: fix arbitrary_virt_to_machine()
  x86: don't read maxlvt before checking if APIC is mapped
  x86: disable TSC for sched_clock() when calibration failed
  x86: distangle user disabled TSC from unstable
  x86: fix setup of cyc2ns in tsc_64.c
2008-05-24 10:20:00 -07:00
Linus Torvalds
d3c5f8b93f Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] integrator: fix build warnings and errors
  [ARM] fix OMAP include loops
  Revert "[ARM] pxa: spitz wants PXA27x UDC definitions"
  [ARM] 5053/1: define before use of processor_id
  [ARM] 5052/1: export clock functions for the at91x40
  [ARM] 5051/1: define pgtable_t for the !CONFIG_MMU case too
  [ARM] omap: fix omap clk support build errors
  [ARM] 5039/1: S3C244X: Rename SDI device if running on S3C244X.
  [ARM] 5043/1: pxafb: remove unused mode variable in pxafb_init_fbinfo
  [ARM] 5041/1: VR1000: Fix DM9000 IRQ flags initialisation
  [ARM] 5040/1: BAST: Fix DM9000 IRQ flags initialisation
  [ARM] 5038/1: ARM: OMAP: Remove tsc2102 references from board-palmte.c
  [ARM] 5025/2: fix collie cpu initialisation
2008-05-24 10:13:16 -07:00
David Brownell
25d5cb4b03 spi: remove some spidev oops-on-rmmod paths
Somehow the spidev code forgot to include a critical mechanism: when the
underlying device is removed (e.g.  spi_master rmmod), open file
descriptors must be prevented from issuing new I/O requests to that
device.  On penalty of the oopsing reported by Sebastian Siewior
<bigeasy@tglx.de> ...

This is a partial fix, adding handshaking between the lower level (SPI
messaging) and the file operations using the spi_dev.  (It also fixes an
issue where reads and writes didn't return the number of bytes sent or
received.)

There's still a refcounting issue to be addressed (separately).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Reported-by: Sebastian Siewior <bigeasy@tglx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:14 -07:00
Cedric Le Goater
5c02b57578 cgroups: remove node_ prefix_from ns subsystem
This is a slight change in the namespace cgroup subsystem api.

The change is that previously when cgroup_clone() was called (currently
only from the unshare path in ns_proxy cgroup, you'd get a new group named
"node_$pid" whereas now you'll get a group named after just your pid.)

The only users who would notice it are those who are using the ns_proxy
cgroup subsystem to auto-create cgroups when namespaces are unshared -
something of an experimental feature, which I think really needs more
complete container/namespace support in order to be useful.  I suspect the
only users are Cedric and Serge, or maybe a few others on
containers@lists.linux-foundation.org.  And in fact it would only be
noticed by the users who make the assumption about how the name is
generated, rather than getting it from the /proc/<pid>/cgroups file for
the process in question.

Whether the change is actually needed or not I'm fairly agnostic on, but I
guess it is more elegant to just use the pid as the new group name rather
than adding a fairly arbitrary "node_" prefix on the front.

[menage@google.com: provided changelog]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: "Paul Menage" <menage@google.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:14 -07:00
Fernando Luis Vazquez Cao
12d15f0d51 for_each_online_pgdat(): kerneldoc fix
for_each_pgdat() was renamed to for_each_online_pgdat() and kerneldoc
comments should be updated accordingly.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Adrian Bunk
fb56f0f992 frv: export empty_zero_page
Fix the following build error:

ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined!

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Shi Weihua
7b26655f62 sys_prctl(): fix return of uninitialized value
If none of the switch cases match, the PR_SET_PDEATHSIG and
PR_SET_DUMPABLE cases of the switch statement will never write to local
variable `error'.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Cc: Andrew G. Morgan <morgan@kernel.org>
Acked-by: "Serge E. Hallyn" <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Kumar Gala
f99c90094b edac: mpc85xx: fix building as a module
including of <asm/mpc85xx.h> causes build problems since it doesn't exist.

Also removed warning:
drivers/edac/mpc85xx_edac.c:45: warning: 'mpc85xx_ctl_name' defined but not used

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Doug Thompson <dougthompson@xmission.com>
Acked-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
David Brownell
6ea0205b56 gpio: build fixes
This fixes various gpio-related build errors (mostly potential)
reported in part by Russell King and Uwe Kleine-König.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Ben Dooks
ee29420aca S3C2410: fix driver MODULE_ALIAS()
Add a correct MODULE_ALIAS() entry for this driver to enable udev module
loading.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Ben Dooks
6a0e4ec7bc S3C2410: clean out changelog header and tidy
Remove the old changelog entries which are now out of date and should be
extractable from git anyway.  Also tidy up the copyright for the driver.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:13 -07:00
Ben Dooks
d585dfe840 S3C2410: add error print if we cannot add attribute
Fix the following warning by checking the result of device_create_file and
printing an error but not removing the device (loss of debug registers is
not fatal).

drivers/video/s3c2410fb.c:905: warning: ignoring return value of 'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:12 -07:00
Ben Dooks
673b4600e3 S3C2410: ensure that FB_BLANK_POWERDOWN shuts down the controller
When a blank level of FB_BLANK_POWERDOWN is used, we should shut down the
controller so that it no longer tries to produce any panel signals or
data, and shuts down the DMA which is not needed.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:12 -07:00
Ben Dooks
cdc83ae245 SM501: reverse FPEN/VBIASEN flags behaviour
To keep backwards compatibility, reverse the meanings of these flags so
that when they are not set, the driver uses the original behvaiour.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:12 -07:00
Heiko Carstens
cd94b9dbfa memory hotplug: fix early allocation handling
Trying to add memory via add_memory() from within an initcall function
results in

bootmem alloc of 163840 bytes failed!
Kernel panic - not syncing: Out of memory

This is caused by zone_wait_table_init() which uses system_state to decide
if it should use the bootmem allocator or not.

When initcalls are handled the system_state is still SYSTEM_BOOTING but
the bootmem allocator doesn't work anymore.  So the allocation will fail.

To fix this use slab_is_available() instead as indicator like we do it
everywhere else.

[akpm@linux-foundation.org: coding-style fix]
Reviewed-by: Andy Whitcroft <apw@shadowen.org>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:12 -07:00
Andy Whitcroft
7eb54824b7 zonelists: handle a node zonelist with no applicable entries
When booting 2.6.26-rc3 on a multi-node x86_32 numa system we are seeing
panics when trying node local allocations:

 BUG: unable to handle kernel NULL pointer dereference at 0000034c
 IP: [<c1042507>] get_page_from_freelist+0x4a/0x18e
 *pdpt = 00000000013a7001 *pde = 0000000000000000
 Oops: 0000 [#1] SMP
 Modules linked in:

 Pid: 0, comm: swapper Not tainted (2.6.26-rc3-00003-g5abc28d #82)
 EIP: 0060:[<c1042507>] EFLAGS: 00010282 CPU: 0
 EIP is at get_page_from_freelist+0x4a/0x18e
 EAX: c1371ed8 EBX: 00000000 ECX: 00000000 EDX: 00000000
 ESI: f7801180 EDI: 00000000 EBP: 00000000 ESP: c1371ec0
  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
 Process swapper (pid: 0, ti=c1370000 task=c12f5b40 task.ti=c1370000)
 Stack: 00000000 00000000 00000000 00000000 000612d0 000412d0 00000000 000412d0
        f7801180 f7c0101c f7c01018 c10426e4 f7c01018 00000001 00000044 00000000
        00000001 c12f5b40 00000001 00000010 00000000 000412d0 00000286 000412d0
 Call Trace:
  [<c10426e4>] __alloc_pages_internal+0x99/0x378
  [<c10429ca>] __alloc_pages+0x7/0x9
  [<c105e0e8>] kmem_getpages+0x66/0xef
  [<c105ec55>] cache_grow+0x8f/0x123
  [<c105f117>] ____cache_alloc_node+0xb9/0xe4
  [<c105f427>] kmem_cache_alloc_node+0x92/0xd2
  [<c122118c>] setup_cpu_cache+0xaf/0x177
  [<c105e6ca>] kmem_cache_create+0x2c8/0x353
  [<c13853af>] kmem_cache_init+0x1ce/0x3ad
  [<c13755c5>] start_kernel+0x178/0x1ee

This occurs when we are scanning the zonelists looking for a ZONE_NORMAL
page.  In this system there is only ZONE_DMA and ZONE_NORMAL memory on
node 0, all other nodes are mapped above 4GB physical.  Here is a dump
of the zonelists from this system:

    zonelists pgdat=c1400000
     0: c14006c0:2 f7c006c0:2 f7e006c0:2 c1400360:1 c1400000:0
     1: c14006c0:2 c1400360:1 c1400000:0
    zonelists pgdat=f7c00000
     0: f7c006c0:2 f7e006c0:2 c14006c0:2 c1400360:1 c1400000:0
     1: f7c006c0:2
    zonelists pgdat=f7e00000
     0: f7e006c0:2 c14006c0:2 f7c006c0:2 c1400360:1 c1400000:0
     1: f7e006c0:2

When performing a node local allocation we call get_page_from_freelist()
looking for a page.  It in turn calls first_zones_zonelist() which returns
a preferred_zone.  Where there are no applicable zones this will be NULL.
However we use this unconditionally, leading to this panic.

Where there are no applicable zones there is no possibility of a successful
allocation, so simply fail the allocation.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:11 -07:00
Arjan van de Ven
03a74dcc7e serial: fix enable_irq_wake/disable_irq_wake imbalance in serial_core.c
enable_irq_wake() and disable_irq_wake() need to be balanced.  However,
serial_core.c calls these for different conditions during the suspend and
resume functions...

This is causing a regular WARN_ON() as found at
http://www.kerneloops.org/search.php?search=set_irq_wake

This patch makes the conditions for triggering the _wake enable/disable
sequence identical.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:11 -07:00
Denis V. Lunev
c4185a0e01 proc: proc_get_inode() should get module only once
Any file under /proc/net opened more than once leaked the refcounter
on the module it belongs to.

The problem is that module_get is called for each file opening while
module_put is called only when /proc inode is destroyed. So, lets put
module counter if we are dealing with already initialised inode.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=10737

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: David Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Robert Olsson <robert.olsson@its.uu.se>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Reported-by: Roland Kletzing <devzero@web.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:11 -07:00
Marcin Krol
53978d0a7a brd: don't show ramdisks in /proc/partitions
In 2.6.25, ramdisk devices show up in /proc/partitions, which is a
behaviour change from the old rd.c.  Add GENHD_FL_SUPPRESS_PARTITION_INFO,
which was present in rd.c.

All kernels prior to 2.6.25 weren't displaying ramdisks in
/proc/partitions.  Since there are many userspace tools using information
from /proc/partitions some of them may now behave incorrectly (I didn't
tested any though).  For example before 2.6.25 /proc/partitions was empty
if no block devices like hard disks and such were detected by kernel.  Now
all 16 ramdisks are always visible there.  Some software may rely on such
information (I mean, on empty /proc/partitions).

There was quite similar situation back in 2004, and ramdisks were excluded
back from displaying.  Thats why I called this a regression (maybe a bit
unfortunate).  See this patch for info:
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.3-rc2/2.6.3-rc2-mm1/broken-out/nbd-proc-partitions-fix.patch

I also think that someone somewhere (long time ago) excluded ramdisks from
/proc/partitions for good reasons.  It is possible that now such new
"feature" is harmless, but I think there are more chances that someone
will say "hey, /proc/partitions has changed, now my software doesn't work"
then "hey where did my new 2.6.25 feature go".  nbd devices are also
excluded, maybe for very same (unknown to me) reasons.

Signed-off-by: Marcin Krol <hawk@pld-linux.org>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-24 09:56:11 -07:00