[PATCH 5.12 541/677] mt76: mt7921: always wake the device in mt7921_remove_interface

From: Greg Kroah-Hartman
Date: Wed May 12 2021 - 14:58:39 EST


From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>

[ Upstream commit 859c85fd19715349ce01539459095fd5fc7e483a ]

Make sure the mcu is not in sleep mode before sending mcu messages in
mt7921_remove_interface routine.

Fixes: 1d8efc741df80 ("mt76: mt7921: introduce Runtime PM support")
Co-developed-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Co-developed-by: Leon Yen <leon.yen@xxxxxxxxxxxx>
Signed-off-by: Leon Yen <leon.yen@xxxxxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7921/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 3566059e5704..166c9c0eb5fd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -348,6 +348,7 @@ static void mt7921_remove_interface(struct ieee80211_hw *hw,
if (vif == phy->monitor_vif)
phy->monitor_vif = NULL;

+ mt7921_mutex_acquire(dev);
mt76_connac_free_pending_tx_skbs(&dev->pm, &msta->wcid);

if (dev->pm.enable) {
@@ -360,7 +361,6 @@ static void mt7921_remove_interface(struct ieee80211_hw *hw,

rcu_assign_pointer(dev->mt76.wcid[idx], NULL);

- mt7921_mutex_acquire(dev);
dev->mt76.vif_mask &= ~BIT(mvif->mt76.idx);
phy->omac_mask &= ~BIT_ULL(mvif->mt76.omac_idx);
mt7921_mutex_release(dev);
--
2.30.2