ath9k: fix false positives in the baseband hang check
ath9k_hw_check_alive() occasionally returns false, as the hardware
is still processing data in a specific state. Fix this issue by
repeating the test a few times with longer delay inbetween attempts.
This gets rid of excessive hardware resets that appear frequently on
some AR9132 based devices, but could also happen on AR9280.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Björn Smedman <bjorn.smedman@venatech.se>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 72d5e52..6e486a5 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -428,6 +428,7 @@
#define ATH_PAPRD_TIMEOUT 100 /* msecs */
+void ath_hw_check(struct work_struct *work);
void ath_paprd_calibrate(struct work_struct *work);
void ath_ani_calibrate(unsigned long data);
@@ -562,6 +563,7 @@
spinlock_t sc_pm_lock;
struct mutex mutex;
struct work_struct paprd_work;
+ struct work_struct hw_check_work;
struct completion paprd_complete;
u32 intrstatus;