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| author | Felix Fietkau <nbd@openwrt.org> | 2011-03-25 17:43:41 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-03-28 15:42:01 -0400 |
| commit | f62d816fc4324afbb7cf90110c70b6a14139b225 (patch) | |
| tree | 15c4e59d8b2d9cc84199c6cf4e8374981403ab43 | |
| parent | 4dc217df68a17a57f8464c74c1b4785e40bddf77 (diff) | |
| download | linux-stable-f62d816fc4324afbb7cf90110c70b6a14139b225.tar.gz linux-stable-f62d816fc4324afbb7cf90110c70b6a14139b225.tar.bz2 linux-stable-f62d816fc4324afbb7cf90110c70b6a14139b225.zip | |
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: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 524825720a09..dddb85de622d 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1048,6 +1048,8 @@ static int ath9k_start(struct ieee80211_hw *hw) "Starting driver with initial channel: %d MHz\n", curchan->center_freq); + ath9k_ps_wakeup(sc); + mutex_lock(&sc->mutex); /* setup initial channel */ @@ -1143,6 +1145,8 @@ static int ath9k_start(struct ieee80211_hw *hw) mutex_unlock: mutex_unlock(&sc->mutex); + ath9k_ps_restore(sc); + return r; } |