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mt76: mt7921s: fix bus hang with wrong privilege

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Accroding to chip hw flow, mt7921s need to re-acquire privilege
again before normal running. Otherwise, the bus may be stuck in
an abnormal status.

Tested-by: Leon Yen <[email protected]>
Co-developed-by: Eric-SY Chang <[email protected]>
Signed-off-by: Eric-SY Chang <[email protected]>
Co-developed-by: YN Chen <[email protected]>
Signed-off-by: YN Chen <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Deren Wu
2021-11-28 22:20:34 +01:00
committed by Felix Fietkau
parent 586bad6020
commit 8ec95c9104
1 changed files with 11 additions and 0 deletions
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mt7921/mcu.c
+11
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@@ -720,6 +720,17 @@ 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)
return ret;
ret = __mt7921_mcu_drv_pmctrl(dev);
if (ret)
return ret;
}
out:
sem = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
switch (sem) {