From: Pavel Machek <pavel@ucw.cz>
Date: Tue, 7 Jan 2014 12:13:28 +0000 (+0100)
Subject: wl1251: fix NULL pointer dereference
X-Git-Tag: firefly_0821_release~176^2~4570^2~3^2^2~54
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=260da7e1559fad5422cbb03a9438db6ede120686;p=firefly-linux-kernel-4.4.55.git

wl1251: fix NULL pointer dereference

wl1251: fix NULL pointer dereference

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reported-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ti/wl1251/event.c b/drivers/net/wireless/ti/wl1251/event.c
index 192cebd120d8..db0105313745 100644
--- a/drivers/net/wireless/ti/wl1251/event.c
+++ b/drivers/net/wireless/ti/wl1251/event.c
@@ -124,7 +124,7 @@ static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
 			return ret;
 	}
 
-	if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
+	if (wl->vif && vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
 		wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
 
 		/* indicate to the stack, that beacons have been lost */