From: YN Chen <yn.chen@xxxxxxxxxxxx>
[ Upstream commit a55a0c701c129f8e448f0ec1eb811dba728ace64 ]
To avoid racing problems in chip, mt7921s should reacquire drv-own after
firmware semaphore is released.
Fixes: 78b217580c509 ("mt76: mt7921s: fix bus hang with wrong privilege")
Signed-off-by: YN Chen <yn.chen@xxxxxxxxxxxx>
Signed-off-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index da2be050ed7c..2a609b25561c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -538,13 +538,6 @@ static int mt7921_load_patch(struct mt7921_dev *dev)
if (ret)
dev_err(dev->mt76.dev, "Failed to start patch\n");
- if (mt76_is_sdio(&dev->mt76)) {
- /* activate again */
- ret = __mt7921_mcu_fw_pmctrl(dev);
- if (!ret)
- ret = __mt7921_mcu_drv_pmctrl(dev);
- }
-
out:
sem = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
switch (sem) {
@@ -555,6 +548,14 @@ static int mt7921_load_patch(struct mt7921_dev *dev)
dev_err(dev->mt76.dev, "Failed to release patch semaphore\n");
break;
}
+
+ if (!ret && mt76_is_sdio(&dev->mt76)) {
+ /* activate again */
+ ret = __mt7921_mcu_fw_pmctrl(dev);
+ if (!ret)
+ ret = __mt7921_mcu_drv_pmctrl(dev);
+ }
+
release_firmware(fw);
return ret;
--
2.35.1
