tree 04f2299615adfef58c098960fbc3524da5981498
parent e9298028ee69bda44607156e7348cd32f7ab9360
author Axel Lin <axel.lin@gmail.com> 1312795038 +0800
committer Matthew Garrett <mjg@redhat.com> 1319467958 +0200

platform-drivers-x86: asus-laptop: fix wrong test for successful registered led_classdev

device_create returns &struct device pointer on success, or ERR_PTR() on error.
Thus if led_classdev_register fails, led_cdev->dev is always not NULL.

Thus to unregister a successful registered led_classdev, we should check
IS_ERR_OR_NULL macro for led_cdev->dev instead of checking if led_cdev->dev
is NULL or not.

we use IS_ERR_OR_NULL instead of IS_ERR because if we havn't call
led_classdev_register, the led_cdev->dev is NULL.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>