On Tue, Aug 20, 2013 at 01:47:57AM +0200, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > 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 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. > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> I tested this on Intel DZ77RE-75K and after the patch is applied the machine didn't hang anymore once resuming. Feel free to add my tested-by. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
