From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 12 Oct 2010 14:08:03 +0000 (+0200)
Subject: ath9k: add missing locking around ath9k_hw_proc_mib_event
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=88eac2dad876a58b9c6a4c4805c3fc27b02c048f;p=deliverable%2Flinux.git

ath9k: add missing locking around ath9k_hw_proc_mib_event

ath9k_hw_proc_mib_event updates the cycle counters, so it common->cc_lock
must be acquired.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 74ff51d4c339..2c7f28e022b8 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -779,7 +779,9 @@ irqreturn_t ath_isr(int irq, void *dev)
 		 * it will clear whatever condition caused
 		 * the interrupt.
 		 */
+		spin_lock(&common->cc_lock);
 		ath9k_hw_proc_mib_event(ah);
+		spin_unlock(&common->cc_lock);
 		ath9k_hw_set_interrupts(ah, ah->imask);
 	}