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    Subject[PATCH 5.13 505/800] mt76: mt7921: wake the device before dumping power table
    Date
    From: Lorenzo Bianconi <lorenzo@kernel.org>

    [ Upstream commit 271fa685365842962f56651c9d1a33a0d0d3b30b ]

    Always wake the device up before dumping the single_sku power table
    otherwise the device can hang.

    Fixes: ea29acc97c555 ("mt76: mt7921: add dumping Tx power table")
    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/debugfs.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
    index 6ee423dd4027..6602903c0d02 100644
    --- a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
    +++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
    @@ -184,7 +184,10 @@ mt7921_txpwr(struct seq_file *s, void *data)
    struct mt7921_txpwr txpwr;
    int ret;

    + mt7921_mutex_acquire(dev);
    ret = mt7921_get_txpwr_info(dev, &txpwr);
    + mt7921_mutex_release(dev);
    +
    if (ret)
    return ret;

    --
    2.30.2


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