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authorVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>2013-06-20 12:47:20 +0530
committerKalle Valo <kvalo@qca.qualcomm.com>2013-08-07 10:53:36 +0300
commitf32036e823c45cb4974aab1d0ae66d716bfc9aa6 (patch)
tree62e6915c2601b30cad35c0f6d3dc4d1c49c225fd
parent8cc8df906f953ae0cfe785720989928021d7fe2d (diff)
ath6kl: Fix race in heart beat polling
Make sure to cancel heart beat timer before freeing wmi to avoid potential NULL pointer dereference. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
-rw-r--r--drivers/net/wireless/ath/ath6kl/init.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index 6a67881f94d..4f316bdcbab 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1836,6 +1836,9 @@ void ath6kl_stop_txrx(struct ath6kl *ar)
clear_bit(WMI_READY, &ar->flag);
+ if (ar->fw_recovery.enable)
+ del_timer_sync(&ar->fw_recovery.hb_timer);
+
/*
* After wmi_shudown all WMI events will be dropped. We
* need to cleanup the buffers allocated in AP mode and