| Message ID | 20230612141352.29939-4-tzimmermann@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | fbdev: Make userspace interfaces optional | expand |
On Mon, Jun 12, 2023 at 04:07:41PM +0200, Thomas Zimmermann wrote: > Struct gpio_backlight_platform_data refers to a platform device within > the Linux device hierarchy. The test in gpio_backlight_check_fb() > compares it against the fbdev device in struct fb_info.dev, which > is different. Fix the test by comparing to struct fb_info.device. > > Fixes a bug in the backlight driver and prepares fbdev for making > struct fb_info.dev optional. > > v2: > * move renames into separate patch (Javier, Sam, Michael) > > Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> > Fixes: 8b770e3c9824 ("backlight: Add GPIO-based backlight driver") > Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > Cc: Rich Felker <dalias@libc.org> > Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> > Cc: Lee Jones <lee@kernel.org> > Cc: Daniel Thompson <daniel.thompson@linaro.org> > Cc: Jingoo Han <jingoohan1@gmail.com> > Cc: linux-sh@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: <stable@vger.kernel.org> # v3.12+ Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Daniel.
diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 6f78d928f054a..5c5c99f7979e3 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -35,7 +35,7 @@ static int gpio_backlight_check_fb(struct backlight_device *bl, { struct gpio_backlight *gbl = bl_get_data(bl); - return gbl->fbdev == NULL || gbl->fbdev == info->dev; + return gbl->fbdev == NULL || gbl->fbdev == info->device; } static const struct backlight_ops gpio_backlight_ops = {
Struct gpio_backlight_platform_data refers to a platform device within the Linux device hierarchy. The test in gpio_backlight_check_fb() compares it against the fbdev device in struct fb_info.dev, which is different. Fix the test by comparing to struct fb_info.device. Fixes a bug in the backlight driver and prepares fbdev for making struct fb_info.dev optional. v2: * move renames into separate patch (Javier, Sam, Michael) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: 8b770e3c9824 ("backlight: Add GPIO-based backlight driver") Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Cc: Rich Felker <dalias@libc.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Lee Jones <lee@kernel.org> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: linux-sh@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: <stable@vger.kernel.org> # v3.12+ --- drivers/video/backlight/gpio_backlight.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)