diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-08-19 23:42:32 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-08-20 23:23:53 (GMT) |
| commit | ad07277e82dedabacc52c82746633680a3187d25 (patch) | |
| tree | fe2d921753be6d8cf4ed9e68b9ad8925212b17ea /drivers/pci | |
| parent | 1aaac07112f04068d7e2fc47bb435cfd4f9d5468 (diff) | |
| download | linux-fsl-qoriq-ad07277e82dedabacc52c82746633680a3187d25.tar.xz | |
ACPI / PM: Hold acpi_scan_lock over system PM transitions
Bad things happen if ACPI hotplug events are handled during system
PM transitions, especially if devices are removed as a result.
To prevent those bad things from happening, acquire acpi_scan_lock
when a PM transition is started and release it when that transition
is complete or has been aborted.
This fixes resume lockup on my test-bed Acer Aspire S5 that happens
when Thunderbolt devices are disconnected from the machine while
suspended.
Also fixes the analogous problem for Mika Westerberg on an
Intel DZ77RE-75K board.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Diffstat (limited to 'drivers/pci')
0 files changed, 0 insertions, 0 deletions