[PATCH v4 1/3] wifi: rtw88: clear RTW_FLAG_RESTARTING on stop and start failure

[Kalpesh Solanki <skalpesh942@gmail.com>]

When mac80211 stops or suspends the device without WoWLAN,
drv_reconfig_complete() is never invoked with
IEEE80211_RECONFIG_TYPE_RESTART. If firmware recovery was in flight
during this transition, RTW_FLAG_RESTARTING remains set permanently,
blocking all subsequent firmware recoveries until the module is reloaded.

Similarly, if rtw_core_start() fails during drv_start() in a recovery
restart, local->started remains false. When mac80211 cleans up via
cfg80211_shutdown_all_interfaces(), drv_stop() returns early without
calling rtw_ops_stop(), leaving RTW_FLAG_RESTARTING set permanently on
hardware that failed to recover.

Clear RTW_FLAG_RESTARTING in rtw_ops_stop(), as well as in
rtw_ops_start() when rtw_core_start() returns an error, ensuring the
driver always exits the restarting state on error or teardown.

Fixes: 5c831644e1f4 ("rtw88: handle and recover when firmware crash")
Cc: stable@vger.kernel.org
Signed-off-by: Kalpesh Solanki <skalpesh942@gmail.com>
---
 drivers/net/wireless/realtek/rtw88/mac80211.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 5e40cf06a9e..ffd86f08185 100644
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -57,6 +57,8 @@ static int rtw_ops_start(struct ieee80211_hw *hw)
 
 	mutex_lock(&rtwdev->mutex);
 	ret = rtw_core_start(rtwdev);
+	if (ret)
+		clear_bit(RTW_FLAG_RESTARTING, rtwdev->flags);
 	mutex_unlock(&rtwdev->mutex);
 
 	return ret;
@@ -67,6 +69,7 @@ static void rtw_ops_stop(struct ieee80211_hw *hw, bool suspend)
 	struct rtw_dev *rtwdev = hw->priv;
 
 	mutex_lock(&rtwdev->mutex);
+	clear_bit(RTW_FLAG_RESTARTING, rtwdev->flags);
 	rtw_core_stop(rtwdev);
 	mutex_unlock(&rtwdev->mutex);
 }
-- 
2.53.0