# \[PATCH V3 2/3\] ACPI video hotkey: remove invalid events handler for video output devices - From: Zhang Rui \ - Date: 2007-08-20 10:23:51 - List: linux-input - Page: https://ratatoskr.run/linux-input/2007/08/8908429 ```text Both ACPI_VIDEO_NOTIFY_SWITCH and ACPI_VIDEO_NOTIFY_PROBE are valid for video bus devices only. Actually ACPI video output device should never be notified for a output device switch/probe. ACPI bus devices notify handler already has the code to handle these kinds of events. Signed-off-by: Zhang Rui --- drivers/acpi/video.c | 4 ---- 1 file changed, 4 deletions(-) Index: linux-2.6.23-rc3/drivers/acpi/video.c =================================================================== --- linux-2.6.23-rc3.orig/drivers/acpi/video.c +++ linux-2.6.23-rc3/drivers/acpi/video.c @@ -1813,10 +1813,6 @@ static void acpi_video_device_notify(acp device = video_device->dev; switch (event) { - case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ - case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ - acpi_bus_generate_event(device, event, 0); - break; case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ ```