lkml.org 
[lkml]   [2011]   [Apr]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[27/74] ath9k: fix a chip wakeup related crash in ath9k_start
2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------
From: Felix Fietkau <nbd@openwrt.org>

commit f62d816fc4324afbb7cf90110c70b6a14139b225 upstream.

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

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/wireless/ath/ath9k/main.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1918,6 +1918,8 @@ static int ath9k_start(struct ieee80211_
DPRINTF(sc, ATH_DBG_CONFIG, "Starting driver with "
"initial channel: %d MHz\n", curchan->center_freq);

+ ath9k_ps_wakeup(sc);
+
mutex_lock(&sc->mutex);

if (ath9k_wiphy_started(sc)) {
@@ -2025,6 +2027,8 @@ static int ath9k_start(struct ieee80211_
mutex_unlock:
mutex_unlock(&sc->mutex);

+ ath9k_ps_restore(sc);
+
return r;
}




\
 
 \ /
  Last update: 2011-04-13 18:07    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site