wlcore: force recovery on resume if suspended without recovering

If an error is detected after mac80211 is already suspended, the recovery
work will not be queued. This will leave the driver in a bad state on
resume.

Detect this in the resume op and re-queue a recovery.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 0df28d5cb331297977c2edef4cce5ca0262d0cbf..0b51522d8eae7eb5f9d357a74c861a7109fbf084 100644 (file)
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -1707,7 +1707,7 @@ static int wl1271_op_resume(struct ieee80211_hw *hw)
        struct wl1271 *wl = hw->priv;
        struct wl12xx_vif *wlvif;
        unsigned long flags;
-       bool run_irq_work = false;
+       bool run_irq_work = false, pending_recovery;
 
        wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
                     wl->wow_enabled);
@@ -1723,17 +1723,33 @@ static int wl1271_op_resume(struct ieee80211_hw *hw)
                run_irq_work = true;
        spin_unlock_irqrestore(&wl->wl_lock, flags);
 
+       /* test the recovery flag before calling any SDIO functions */
+       pending_recovery = test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS,
+                                   &wl->flags);
+
        if (run_irq_work) {
                wl1271_debug(DEBUG_MAC80211,
                             "run postponed irq_work directly");
-               wl1271_irq(0, wl);
+
+               /* don't talk to the HW if recovery is pending */
+               if (!pending_recovery)
+                       wl1271_irq(0, 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);
+               goto out;
+       }
+
        wl12xx_for_each_wlvif(wl, wlvif) {
                wl1271_configure_resume(wl, wlvif);
        }
+
+out:
        wl->wow_enabled = false;
        mutex_unlock(&wl->mutex);