diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2012-10-03 21:07:51 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-10-05 16:26:17 -0400 |
| commit | ceb26a6013b962b82f644189ea29d802490fc8fc (patch) | |
| tree | 72b22bf99cd0848df867d821231e52be36a40cbe /drivers/net/wireless/ath/ath9k/main.c | |
| parent | 93170516a4d64319ffcc43bc9dd61f12775bd297 (diff) | |
| download | lwn-ceb26a6013b962b82f644189ea29d802490fc8fc.tar.gz lwn-ceb26a6013b962b82f644189ea29d802490fc8fc.zip | |
ath9k: improve suspend/resume reliability
Ensure that drv_start() always returns true, as a failing hw start usually
eventually leads to crashes when there's still a station entry present.
Call a power-on reset after a resume and after a hw reset failure to bring
the hardware back to life again.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 31ab82e3ba85..e2fe713235dc 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -639,8 +639,7 @@ static int ath9k_start(struct ieee80211_hw *hw) ath_err(common, "Unable to reset hardware; reset status %d (freq %u MHz)\n", r, curchan->center_freq); - spin_unlock_bh(&sc->sc_pcu_lock); - goto mutex_unlock; + ah->reset_power_on = false; } /* Setup our intr mask. */ @@ -665,11 +664,8 @@ static int ath9k_start(struct ieee80211_hw *hw) clear_bit(SC_OP_INVALID, &sc->sc_flags); sc->sc_ah->is_monitoring = false; - if (!ath_complete_reset(sc, false)) { - r = -EIO; - spin_unlock_bh(&sc->sc_pcu_lock); - goto mutex_unlock; - } + if (!ath_complete_reset(sc, false)) + ah->reset_power_on = false; if (ah->led_pin >= 0) { ath9k_hw_cfg_output(ah, ah->led_pin, @@ -688,12 +684,11 @@ static int ath9k_start(struct ieee80211_hw *hw) if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en) common->bus_ops->extn_synch_en(common); -mutex_unlock: mutex_unlock(&sc->mutex); ath9k_ps_restore(sc); - return r; + return 0; } static void ath9k_tx(struct ieee80211_hw *hw, |