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>

1 files changed, 2 insertions, 0 deletions

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);
         }