From 271fa685365842962f56651c9d1a33a0d0d3b30b Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 5 Jun 2021 13:46:03 +0200
Subject: [PATCH] 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>
---
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 6ee423dd4027c..6602903c0d026 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