From 725b82775e7901dc92afaddfa45683934e75c33e Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Thu, 21 Jun 2012 18:10:52 +0300 Subject: [PATCH] wlcore: prevent recovery in the middle of resume Take the mutex early in the resume handler and use the locked version of the IRQ routine. This ensures any recoveries queued will only take place after resume has fully completed. Signed-off-by: Arik Nemtsov Signed-off-by: Luciano Coelho --- drivers/net/wireless/ti/wlcore/main.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c index 0c1e0751eca..372ccf277b1 100644 --- a/drivers/net/wireless/ti/wlcore/main.c +++ b/drivers/net/wireless/ti/wlcore/main.c @@ -1723,6 +1723,7 @@ static int wl1271_op_resume(struct ieee80211_hw *hw) struct wl12xx_vif *wlvif; unsigned long flags; bool run_irq_work = false, pending_recovery; + int ret; wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d", wl->wow_enabled); @@ -1738,6 +1739,8 @@ static int wl1271_op_resume(struct ieee80211_hw *hw) run_irq_work = true; spin_unlock_irqrestore(&wl->wl_lock, flags); + mutex_lock(&wl->mutex); + /* test the recovery flag before calling any SDIO functions */ pending_recovery = test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags); @@ -1747,13 +1750,15 @@ static int wl1271_op_resume(struct ieee80211_hw *hw) "run postponed irq_work directly"); /* don't talk to the HW if recovery is pending */ - if (!pending_recovery) - wlcore_irq(0, wl); + if (!pending_recovery) { + ret = wlcore_irq_locked(wl); + if (ret) + wl12xx_queue_recovery_work(wl); + } wlcore_enable_interrupts(wl); } - mutex_lock(&wl->mutex); if (pending_recovery) { wl1271_warning("queuing forgotten recovery on resume"); ieee80211_queue_work(wl->hw, &wl->recovery_work); -- 2.46.0