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  1. 17 Nov, 2011 2 commits
    • Rafael J. Wysocki's avatar
      PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset · 88995e80
      Rafael J. Wysocki authored 
      Fix build regression introduced by commit 056879d2
(ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix) by moving
the intialization of the A3SP domain to a separate function and
providing an empty definition of it for CONFIG_PM unset.
Reported-and-tested-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      88995e80
    • Rafael J. Wysocki's avatar
      PM Sleep: Do not extend wakeup paths to devices with ignore_children set · 8b258cc8
      Rafael J. Wysocki authored 
      Commit 4ca46ff3 (PM / Sleep: Mark
devices involved in wakeup signaling during suspend) introduced
the power.wakeup_path field in struct dev_pm_info to mark devices
whose children are enabled to wake up the system from sleep states,
so that power domains containing the parents that provide their
children with wakeup power and/or relay their wakeup signals are not
turned off.  Unfortunately, that introduced a PM regression on SH7372
whose power consumption in the system "memory sleep" state increased
as a result of it, because it prevented the power domain containing
the I2C controller from being turned off when some children of that
controller were enabled to wake up the system, although the
controller was not necessary for them to signal wakeup.

To fix this issue use the observation that devices whose
power.ignore_children flag is set for runtime PM should be treated
analogously during system suspend.  Namely, they shouldn't be
included in wakeup paths going through their children.  Since the
SH7372 I2C controller's power.ignore_children flag is set, doing so
will restore the previous behavior of that SOC.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      8b258cc8
  3. 15 Nov, 2011 1 commit
    • Peter Chen's avatar
      PM / driver core: disable device's runtime PM during shutdown · af8db150
      Peter Chen authored 
      There may be an issue when the user issue "reboot/shutdown" command, then
the device has shut down its hardware, after that, this runtime-pm featured
device's driver will probably be scheduled to do its suspend routine,
and at its suspend routine, it may access hardware, but the device has
already shutdown physically, then the system hang may be occurred.

I ran out this issue using an auto-suspend supported USB devices, like
3G modem, keyboard. The usb runtime suspend routine may be scheduled
after the usb controller has been shut down, and the usb runtime suspend
routine will try to suspend its roothub(controller), it will access
register, then the system hang occurs as the controller is shutdown.
Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Acked-by: default avatarMing Lei <tom.leiming@gmail.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Cc: stable@kernel.org
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      af8db150
  5. 14 Nov, 2011 3 commits
  7. 10 Nov, 2011 1 commit
  9. 09 Nov, 2011 7 commits
  11. 08 Nov, 2011 18 commits
  13. 07 Nov, 2011 8 commits
    • Al Viro's avatar
      VFS: we need to set LOOKUP_JUMPED on mountpoint crossing · a3fbbde7
      Al Viro authored 
      Mountpoint crossing is similar to following procfs symlinks - we do
not get ->d_revalidate() called for dentry we have arrived at, with
unpleasant consequences for NFS4.

Simple way to reproduce the problem in mainline:

    cat >/tmp/a.c <<'EOF'
    #include <unistd.h>
    #include <fcntl.h>
    #include <stdio.h>
    main()
    {
            struct flock fl = {.l_type = F_RDLCK, .l_whence = SEEK_SET, .l_len = 1};
            if (fcntl(0, F_SETLK, &fl))
                    perror("setlk");
    }
    EOF
    cc /tmp/a.c -o /tmp/test

then on nfs4:

    mount --bind file1 file2
    /tmp/test < file1		# ok
    /tmp/test < file2		# spews "setlk: No locks available"...

What happens is the missing call of ->d_revalidate() after mountpoint
crossing and that's where NFS4 would issue OPEN request to server.

The fix is simple - treat mountpoint crossing the same way we deal with
following procfs-style symlinks.  I.e.  set LOOKUP_JUMPED...

Cc: stable@kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a3fbbde7
    • Jonathan Corbet's avatar
      PM / devfreq: fix private_data · 1a51cfdc
      Jonathan Corbet authored 
      The "private_date" field in struct devfreq_dev_status almost certainly
wants to be "private_data"; since there are no in-tree users of this
functionality, now seems like an easy time to make the fix.
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      1a51cfdc
    • Rafael J. Wysocki's avatar
      Documentation: Fix typo in freezer-subsystem.txt · 5f111616
      Rafael J. Wysocki authored 
      Fix a typo in Documentation/cgroups/freezer-subsystem.txt.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: default avatarSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: default avatarRandy Dunlap <rdunlap@xenotime.net>
      5f111616
    • Dominik Brodowski's avatar
      PM / QoS: Set cpu_dma_pm_qos->name · a6f05b97
      Dominik Brodowski authored 
      Since commit 4a31a334, the name of this misc device is not initialized,
which leads to a funny device named /dev/(null) being created and
/proc/misc containing an entry with just a number but no name. The latter
leads to complaints by cryptsetup, which caused me to investigate this
matter.
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      a6f05b97
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 54a0f913
      Linus Torvalds authored 
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf top: Fix live annotation in the --stdio interface
  perf top tui: Don't recalc column widths considering just the first page
  perf report: Add progress bar when processing time ordered events
  perf hists browser: Warn about lost events
  perf tools: Fix a typo of command name as trace-cmd
  perf hists: Fix recalculation of total_period when sorting entries
  perf header: Fix build on old systems
  perf ui browser: Handle K_RESIZE in dialog windows
  perf ui browser: No need to switch char sets that often
  perf hists browser: Use K_TIMER
  perf ui: Rename ui__warning_paranoid to ui__error_paranoid
  perf ui: Reimplement the popup windows using libslang
  perf ui: Reimplement ui__popup_menu using ui__browser
  perf ui: Reimplement ui_helpline using libslang
  perf ui: Improve handling sigwinch a bit
  perf ui progress: Reimplement using slang
  perf evlist: Fix grouping of multiple events
      54a0f913
    • Tony Lindgren's avatar
      Merge branch 'fixes-modulesplit' into fixes · d30cc16c
      Tony Lindgren authored
      d30cc16c
    • Tony Lindgren's avatar
      ARM: OMAP: Fix export.h or module.h includes · a1bcc1dc
      Tony Lindgren authored 
      Commit 32aaeffb (Merge branch
'modsplit-Oct31_2011'...) caused some build errors. Fix these
and make sure we always have export.h or module.h included
for MODULE_ and EXPORT_SYMBOL users:

$ grep -rl ^MODULE_ arch/arm/*omap*/*.c | xargs \
  grep -L linux/module.h
  arch/arm/mach-omap2/dsp.c
  arch/arm/mach-omap2/mailbox.c
  arch/arm/mach-omap2/omap-iommu.c
  arch/arm/mach-omap2/smartreflex.c

Also check we either have export.h or module.h included
for the files exporting symbols:

$ grep -rl EXPORT_SYMBOL arch/arm/*omap*/*.c | xargs \
  grep -L linux/export.h | xargs grep -L linux/module.h

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      a1bcc1dc
    • Axel Lin's avatar
      ARM: OMAP: omap_device: Include linux/export.h · 55581415
      Axel Lin authored 
      Include linux/export.h to fix below build warning:

  CC      arch/arm/plat-omap/omap_device.o
arch/arm/plat-omap/omap_device.c:1055: warning: data definition has no type or storage class
arch/arm/plat-omap/omap_device.c:1055: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL'
arch/arm/plat-omap/omap_device.c:1055: warning: parameter names (without types) in function declaration
Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      55581415
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