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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-09-06 09:52:16 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2024-09-30 17:49:41 +0200 |
| commit | 26228256b796eb0145bdfb2ae34ec8c4c0ef1319 (patch) | |
| tree | 9c1d7d67582cb0919d0542a80a8ecff98a1a4180 /drivers/video/backlight | |
| parent | backlight: lcd: Rearrange code in fb_notifier_callback() (diff) | |
| download | linux-26228256b796eb0145bdfb2ae34ec8c4c0ef1319.tar.xz linux-26228256b796eb0145bdfb2ae34ec8c4c0ef1319.zip | |
backlight: lcd: Test against struct fb_info.lcd_dev
Add struct fb_info.lcd_dev for fbdev drivers to store a reference to
their lcd device. Update the lcd's fb_notifier_callback() to test for
this field. The lcd module can now detect if an lcd device belongs to
an fbdev device.
This works similar to the bl_dev for backlights and will allow for
the removal of the check_fb callback from several fbdev driver's lcd
devices.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240906075439.98476-3-tzimmermann@suse.de
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/video/backlight')
| -rw-r--r-- | drivers/video/backlight/lcd.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index 2f57d6867d42..c69407aed296 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -30,6 +30,7 @@ static int fb_notifier_callback(struct notifier_block *self, struct lcd_device *ld = container_of(self, struct lcd_device, fb_notif); struct fb_event *evdata = data; struct fb_info *info = evdata->info; + struct lcd_device *fb_lcd = fb_lcd_device(info); guard(mutex)(&ld->ops_lock); @@ -37,6 +38,8 @@ static int fb_notifier_callback(struct notifier_block *self, return 0; if (ld->ops->check_fb && !ld->ops->check_fb(ld, info)) return 0; + if (fb_lcd && fb_lcd != ld) + return 0; if (event == FB_EVENT_BLANK) { if (ld->ops->set_power) |