wl12xx: check if elp wakeup failed

Check the return call from wl12xx_ps_elp_wakeup() and bail out if it
fails. This shouldn't happen, but if does there's a fundamental low
level issue.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_tx.c b/drivers/net/wireless/wl12xx/wl1251_tx.c
index c42c43de657e..10023fce1031 100644
--- a/drivers/net/wireless/wl12xx/wl1251_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1251_tx.c
@@ -311,7 +311,9 @@ void wl1251_tx_work(struct work_struct *work)
 
         while ((skb = skb_dequeue(&wl->tx_queue))) {
                 if (!woken_up) {
-                        wl12xx_ps_elp_wakeup(wl);
+                        ret = wl12xx_ps_elp_wakeup(wl);
+                        if (ret < 0)
+                                goto out;
                         woken_up = true;
                 }