diff options
| author | Deren Wu <deren.wu@mediatek.com> | 2021-11-28 10:43:59 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-12-19 17:24:02 +0300 |
| commit | 78b217580c50994ae22dde4ecaaf147de0f355f6 (patch) | |
| tree | 14c4b9eddb031e051ee2beb934d2e4e52efa3694 | |
| parent | 00ff52346d74c38787ff8b4acde8c5671d9b7fe2 (diff) | |
| download | linux-78b217580c50994ae22dde4ecaaf147de0f355f6.tar.xz | |
mt76: mt7921s: fix bus hang with wrong privilege
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>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c index 6ada1ebe7d68..1227d626e9d3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c @@ -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) { |