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    Subject[PATCH 5.13 123/266] mt76: mt7921: reset wfsys during hw probe
    Date
    From: Lorenzo Bianconi <lorenzo@kernel.org>

    [ Upstream commit 01f7da40917923bf9d8fd8d5c9a6ed646004e47c ]

    This patch fixes a mcu hang during device probe on
    Marvell ESPRESSObin after a hot reboot.

    Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
    Signed-off-by: Felix Fietkau <nbd@nbd.name>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/wireless/mediatek/mt76/mt7921/dma.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
    index bd9143dc865f..7fca7dc466b8 100644
    --- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
    +++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
    @@ -402,6 +402,10 @@ int mt7921_dma_init(struct mt7921_dev *dev)
    if (ret)
    return ret;

    + ret = mt7921_wfsys_reset(dev);
    + if (ret)
    + return ret;
    +
    /* init tx queue */
    ret = mt7921_init_tx_queues(&dev->phy, MT7921_TXQ_BAND0,
    MT7921_TX_RING_SIZE);
    --
    2.30.2


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