diff options
| author | Hans de Goede <[email protected]> | 2014-05-21 15:39:54 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2014-05-27 01:29:01 +0200 |
| commit | 3cc6919bd61315ea60baf95f3f9868aacfd1ace4 (patch) | |
| tree | e50ebe95421333e2c18a146fc449ead2b84cd0f4 /tools/perf/util/trace-event-scripting.c | |
| parent | bee564430feec1175ee64bcfd4913cacc519f817 (diff) | |
backlight: Add backlight device (un)registration notification
Some firmware drivers, ie acpi-video want to get themselves out of the
way (in some cases) when their also is a raw backlight device available.
Due to module loading ordering being unknown, acpi-video cannot be certain
that the backlight_device_registered(BACKLIGHT_RAW) it does for this is
the final verdict wrt there being a BACKLIGHT_RAW device.
By adding notification acpi-video can listen for backlight devices showing
up after it has loaded, and unregister its backlight device if desired.
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Jingoo Han <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions