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[PATCH] uwb: properly check kthread_run return value

uwbd_start() calls kthread_run() and checks that the return value is
not NULL. But the return value is not NULL in case kthread_run() fails,
it takes the form of ERR_PTR(-EINTR).

Use IS_ERR() instead.

Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
 drivers/uwb/uwbd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c
index 01c20a260a8b..9f615b303576 100644
--- a/drivers/uwb/uwbd.c
+++ b/drivers/uwb/uwbd.c
@@ -303,7 +303,7 @@ static int uwbd(void *param)
 void uwbd_start(struct uwb_rc *rc)
 	rc->uwbd.task = kthread_run(uwbd, rc, "uwbd");
-	if (rc->uwbd.task == NULL)
+	if (IS_ERR(rc->uwbd.task))
 		printk(KERN_ERR "UWB: Cannot start management daemon; "
 		       "UWB won't work\n");