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>

diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
index 7f4a7c3..fe9af12 100644 (file)
--- 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;
        }