Hi! > From: Rafael J. Wysocki <rjw@xxxxxxx> > > There are some systems out there that don't work correctly with > our current suspend/hibernation code ordering. Provide a workaround > for these systems allowing them to pass the > 'acpi_sleep=old_ordering' in the kernel command line which will make > the kernel use the pre-ACPI 2.0 suspend code ordering. > > Unfortunately, that requires us to rework the resuming of devices for > recovering the platform in case one of the device drivers' .suspend() > routines returns error code. Namely, ACPI 1.0 specifies that _PTS > should be called before suspending devices, but _WAK still should be > called before resuming them in order to undo the changes made by > _PTS. However, if there is an error during suspending devices, they > are automatically resumed without returning control to the PM core > and that has to be changed. For this reason, the high-level suspend > and hibernation code has to be changed as well and new platform > callbacks are necessary. > > The patch also reorders and refactors the ACPI suspend/hibernation > code to avoid duplication as far as reasonably possible. > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> I like it. ACK. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
