power: Use udev ATTR{xyz}=<value> syntax for audio power save mode
Using the udev ATTR syntax is cleaner and gets the job done without
the overhead of launching a shell.
BUG=chromium:775486
TEST=build and boot on squakws
cat /sys/module/snd_hda_intel/parameters/power_save
=> 10
cat /sys/module/snd_hda_intel/parameters/power_save_controller
=> Y
Change-Id: I7a344ec257a991230f530380dab679b81fb81d49
Reviewed-on: https://chromium-review.googlesource.com/769160
Commit-Ready: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
(cherry picked from commit 8c51dce294f60a8e3c9154c23f1a3be7f893caf3)
Reviewed-on: https://chromium-review.googlesource.com/777061
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Commit-Queue: Matthias Kaehlcke <mka@chromium.org>
1 file changed
