From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Fri, 17 Jun 2016 17:34:17 +0000 (+0000)
Subject: staging: wilc1000: fix return value check in wlan_initialize_threads()
X-Git-Tag: microblaze-4.10-rc1~775^2~14
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=b3e6916d6edfdf12505efbfb4a019e8a96f2c674;p=linux-2.6-microblaze.git

staging: wilc1000: fix return value check in wlan_initialize_threads()

In case of error, the function kthread_run() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c
index 2ce9df5c6885..3a66255f14fc 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -715,10 +715,10 @@ static int wlan_initialize_threads(struct net_device *dev)
 
 	wilc->txq_thread = kthread_run(linux_wlan_txq_task, (void *)dev,
 				     "K_TXQ_TASK");
-	if (!wilc->txq_thread) {
+	if (IS_ERR(wilc->txq_thread)) {
 		netdev_err(dev, "couldn't create TXQ thread\n");
 		wilc->close = 0;
-		return -ENOBUFS;
+		return PTR_ERR(wilc->txq_thread);
 	}
 	wait_for_completion(&wilc->txq_thread_started);