The kthread_run() function returns either a valid task_struct or
ERR_PTR() value, check for NULL is invalid. The change fixes potential
oops, e.g. in OOM situation.

Signed-off-by: Vladimir Zapolskiy <v...@mleia.com>
---
 drivers/staging/wilc1000/linux_wlan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/wilc1000/linux_wlan.c 
b/drivers/staging/wilc1000/linux_wlan.c
index 54fe9d7..5077c30 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -849,10 +849,10 @@ static int wlan_initialize_threads(struct net_device *dev)
        PRINT_D(INIT_DBG, "Creating kthread for transmission\n");
        wilc->txq_thread = kthread_run(linux_wlan_txq_task, (void *)dev,
                                     "K_TXQ_TASK");
-       if (!wilc->txq_thread) {
+       if (IS_ERR(wilc->txq_thread)) {
                PRINT_ER("couldn't create TXQ thread\n");
                wilc->close = 0;
-               return -ENOBUFS;
+               return PTR_ERR(wilc->txq_thread);
        }
        down(&wilc->txq_thread_started);
 
-- 
2.1.4

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