From 80c78c67e6660db46f0a6e60941386ce22863e24 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Fri, 5 Jul 2013 16:15:03 +0300 Subject: [PATCH] ath10k: fix possible deadlock It was possible to have a deadlock due to inverted locking of local->iflist_mtx and ath10k->conf_mutex. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index da5c333..608e240 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -2581,8 +2581,9 @@ static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) ar_iter.ar = ar; mutex_lock(&ar->conf_mutex); - ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, - ath10k_set_rts_iter, &ar_iter); + ieee80211_iterate_active_interfaces_atomic( + hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_rts_iter, &ar_iter); mutex_unlock(&ar->conf_mutex); return ar_iter.ret; @@ -2622,8 +2623,9 @@ static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value) ar_iter.ar = ar; mutex_lock(&ar->conf_mutex); - ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, - ath10k_set_frag_iter, &ar_iter); + ieee80211_iterate_active_interfaces_atomic( + hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_frag_iter, &ar_iter); mutex_unlock(&ar->conf_mutex); return ar_iter.ret; -- 2.7.4