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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 <Leon.Yen@mediatek.com>
Co-developed-by: Eric-SY Chang <Eric-SY.Chang@mediatek.com>
Signed-off-by: Eric-SY Chang <Eric-SY.Chang@mediatek.com>
Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Deren Wu
2021-11-28 15:43:59 +08:00
committed by Felix Fietkau
parent 00ff52346d
commit 78b217580c
1 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
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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) {