]> git.karo-electronics.de Git - karo-tx-linux.git/commit
ACPI / PM: Runtime resume devices when waking from hibernate
authorLukas Wunner <lukas@wunner.de>
Tue, 22 Mar 2016 23:11:20 +0000 (00:11 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Apr 2016 16:09:03 +0000 (09:09 -0700)
commitb05e5a587ddc11255de76657e6b4b0e960783cc3
treefb9de040c696155bfb2de432a230758869e13f8f
parentfe81b4d996fbf36cf4e84869b6c5f4394f5e5af9
ACPI / PM: Runtime resume devices when waking from hibernate

commit fbda4b38fa3995aa0777fe9cbbdcb223c6292083 upstream.

Commit 58a1fbbb2ee8 ("PM / PCI / ACPI: Kick devices that might have been
reset by firmware") added a runtime resume for devices that were runtime
suspended when the system entered suspend-to-RAM.

Briefly, the motivation was to ensure that devices did not remain in a
reset-power-on state after resume, potentially preventing deep SoC-wide
low-power states from being entered on idle.

Currently we're not doing the same when leaving suspend-to-disk and this
asymmetry is a problem if drivers rely on the automatic resume triggered
by pm_complete_with_resume_check(). Fix it.

Fixes: 58a1fbbb2ee8 (PM / PCI / ACPI: Kick devices that might have been reset by firmware)
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/acpi/sleep.c