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Commit f62d816f authored by Felix Fietkau's avatar Felix Fietkau Committed by John W. Linville
Browse files

ath9k: fix a chip wakeup related crash in ath9k_start 



When the chip is still asleep when ath9k_start is called,
ath9k_hw_configpcipowersave can trigger a data bus error.

Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 4dc217df

drivers/net/wireless/ath/ath9k/main.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -1048,6 +1048,8 @@ static int ath9k_start(struct ieee80211_hw *hw) 
		"Starting driver with initial channel: %d MHz\n",

		"Starting driver with initial channel: %d MHz\n",

		curchan->center_freq);

		curchan->center_freq);





	ath9k_ps_wakeup(sc);



	mutex_lock(&sc->mutex);

	mutex_lock(&sc->mutex);





	/* setup initial channel */

	/* setup initial channel */
@@ -1143,6 +1145,8 @@ static int ath9k_start(struct ieee80211_hw *hw) 
mutex_unlock:

mutex_unlock:

	mutex_unlock(&sc->mutex);

	mutex_unlock(&sc->mutex);





	ath9k_ps_restore(sc);



	return r;

	return r;

}

}