5.4-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Zimmermann tzimmermann@suse.de
commit 992bdddaabfba19bdc77c1c7a4977b2aa41ec891 upstream.
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 Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-2-tzimmer... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/video/backlight/bd6107.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/video/backlight/bd6107.c +++ b/drivers/video/backlight/bd6107.c @@ -107,7 +107,7 @@ static int bd6107_backlight_check_fb(str { 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 = {