[PATCH v3 01/38] backlight/bd6107: Compare against struct fb_info.device - Linux-stable-mirror

13 Jun 2023

Struct bd6107_platform_data refers to a platform device within
the Linux device hierarchy. The test in bd6107_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)
Fixes: 67b43e590415 ("backlight: Add ROHM BD6107 backlight driver")
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de
Cc: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com
Cc: Lee Jones lee@kernel.org
Cc: Daniel Thompson daniel.thompson@linaro.org
Cc: Jingoo Han jingoohan1@gmail.com
Cc: dri-devel@lists.freedesktop.org
Cc: stable@vger.kernel.org # v3.12+
Reviewed-by: Javier Martinez Canillas javierm@redhat.com
Reviewed-by: Sam Ravnborg sam@ravnborg.org
Reviewed-by: Daniel Thompson daniel.thompson@linaro.org
---
 drivers/video/backlight/bd6107.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
index f4db6c064635b..e3410444ea235 100644
--- a/drivers/video/backlight/bd6107.c
+++ b/drivers/video/backlight/bd6107.c
@@ -104,7 +104,7 @@ static int bd6107_backlight_check_fb(struct backlight_device *backlight,
 {
    struct bd6107 *bd = bl_get_data(backlight);
-	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->dev;
+	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->device;
 }
static const struct backlight_ops bd6107_backlight_ops = {
-- 
2.41.0


    