1. 26 4月, 2011 1 次提交
    • R
      PM / Wakeup: Fix initialization of wakeup-related device sysfs files · 22110faf
      Rafael J. Wysocki 提交于
      It turns out that some PCI devices are only found to be
      wakeup-capable during registration, in which case, when
      device_set_wakeup_capable() is called, device_is_registered() already
      returns 'true' for the given device, but dpm_sysfs_add() hasn't been
      called for it yet.  This leads to situations in which the device's
      power.can_wakeup flag is not set as requested because of failing
      wakeup_sysfs_add() and its wakeup-related sysfs files are not
      created, although they should be present.  This is a post-2.6.38
      regression introduced by commit cb8f51bd
      (PM: Do not create wakeup sysfs files for devices that cannot wake
      up).
      
      To work around this problem initialize the device's power.entry
      field to an empty list head and make device_set_wakeup_capable()
      check if it is still empty before attempting to add the devices
      wakeup-related sysfs files with wakeup_sysfs_add().  Namely, if
      power.entry is still empty at this point, device_pm_add() hasn't been
      called yet for the device and its wakeup-related files will be
      created later, so device_set_wakeup_capable() doesn't have to create
      them.
      Reported-and-tested-by: NTino Keitel <tino.keitel@tikei.de>
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
      22110faf
  2. 24 4月, 2011 17 次提交
  3. 23 4月, 2011 5 次提交
  4. 22 4月, 2011 15 次提交
  5. 21 4月, 2011 2 次提交