[PATCH 1/3] platform-drivers-x86: eeepc-laptop: fix wrong test forsuccessful registered led_classdev

From: Axel Lin
Date: Mon Aug 08 2011 - 05:14:37 EST

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.

If IS_ERR(eeepc->tpd_led.dev) is ture, it means led_classdev_register fails.
If (asus->tpd_led.dev) is NULL, it means we call eeepc_led_exit before
calling led_classdev_register for &eeepc->tpd_led.

We only want to call led_classdev_unregister for sucessfully registered
led_classdev, then we should check (!IS_ERR_OR_NULL(eeepc->tpd_led.dev)).

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
drivers/platform/x86/eeepc-laptop.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 1c45d92..29a216a 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -568,7 +568,7 @@ static int eeepc_led_init(struct eeepc_laptop *eeepc)

static void eeepc_led_exit(struct eeepc_laptop *eeepc)
- if (eeepc->tpd_led.dev)
+ if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
if (eeepc->led_workqueue)

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