[media] pvrusb2: correctly handling failed thread run

Since kthread_run returns -ENOMEM if failed,
it needs to be checked whether it is error, not whether it is null.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c
index fd888a6..c45f307 100644 (file)
--- a/drivers/media/usb/pvrusb2/pvrusb2-context.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c
@@ -196,7 +196,7 @@ int pvr2_context_global_init(void)
        pvr2_context_thread_ptr = kthread_run(pvr2_context_thread_func,
                                              NULL,
                                              "pvrusb2-context");
-       return (pvr2_context_thread_ptr ? 0 : -ENOMEM);
+       return IS_ERR(pvr2_context_thread_ptr) ? -ENOMEM : 0;
 }