[PATCH 4.14 106/186] backlight/bd6107: Compare against struct fb_info.device

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Zimmermann <tzimmermann at 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 at suse.de>
Cc: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Cc: Lee Jones <lee at kernel.org>
Cc: Daniel Thompson <daniel.thompson at linaro.org>
Cc: Jingoo Han <jingoohan1 at gmail.com>
Cc: dri-devel at lists.freedesktop.org
Cc: <stable at vger.kernel.org> # v3.12+
Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson at linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-2-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh at 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
@@ -110,7 +110,7 @@ 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 = {