From: Rafael J. Wysocki Date: Sat, 23 Feb 2008 18:13:25 +0000 (+0100) Subject: PM: Introduce PM_EVENT_HIBERNATE callback state X-Git-Tag: v2.6.25-rc3~71 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a2d5b700132f35401f1d9e22fe3c2cab02c2549;p=pandora-kernel.git PM: Introduce PM_EVENT_HIBERNATE callback state During the last step of hibernation in the "platform" mode (with the help of ACPI) we use the suspend code, including the devices' ->suspend() methods, to prepare the system for entering the ACPI S4 system sleep state. But at least for some devices the operations performed by the ->suspend() callback in that case must be different from its operations during regular suspend. For this reason, introduce the new PM event type PM_EVENT_HIBERNATE and pass it to the device drivers' ->suspend() methods during the last phase of hibernation, so that they can distinguish this case and handle it as appropriate. Modify the drivers that handle PM_EVENT_SUSPEND in a special way and need to handle PM_EVENT_HIBERNATE in the same way. These changes are necessary to fix a hibernation regression related to the i915 driver (ref. http://lkml.org/lkml/2008/2/22/488). Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Tested-by: Jeff Chua Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed