backlight: backlight_device_register() return ERR_PTR()

backlight_device_register() returns a valid pointer or ERR_PTR() never
NULL.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
index 7f4a7c30a98b..fe9af129c5dd 100644
--- a/drivers/video/backlight/adx_bl.c
+++ b/drivers/video/backlight/adx_bl.c
@@ -107,8 +107,8 @@ static int __devinit adx_backlight_probe(struct platform_device *pdev)
         props.max_brightness = 0xff;
         bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
                                           bl, &adx_backlight_ops, &props);
-        if (!bldev) {
-                ret = -ENOMEM;
+        if (IS_ERR(bldev)) {
+                ret = PTR_ERR(bldev);
                 goto out;
         }