mt76: mt7921: wake the device before dumping power table

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>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
index 6ee423d..6602903 100644 (file)
--- 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;