[PATCH 5/5] ath9k: do not access hw registers in FULL SLEEP
From: Rajkumar Manoharan <hidden>
Date: 2011-01-31 18:18:54
Subsystem:
atheros ath generic utilities, qualcomm atheros ath9k wireless driver, the rest · Maintainers:
Jeff Johnson, Toke Høiland-Jørgensen, Linus Torvalds
The opmode recalculation is accessing hw registers. When it is called from remove interface callback and if there are no vifs present then hw is moved to FULL SLEEP by radio disable. So use power save wrappers before accessing hw registers in calculating opmode state. Signed-off-by: Rajkumar Manoharan <redacted> --- drivers/net/wireless/ath/ath9k/main.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 21e8d29..d838933 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c@@ -1348,6 +1348,7 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, ath9k_calculate_iter_data(hw, vif, &iter_data); + ath9k_ps_wakeup(sc); /* Set BSSID mask. */ memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); ath_hw_setbssidmask(common);
@@ -1382,6 +1383,7 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, } ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_ps_restore(sc); /* Set up ANI */ if ((iter_data.naps + iter_data.nadhocs) > 0) {
--
1.7.3.5