From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Fri, 1 May 2020 23:16:10 +0000 (+0200)
Subject: mt76: mt7615: check return value of mt7615_eeprom_get_power_index
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cc5f58aee180f1f8dbdbc136ecb3cdd190b29068;p=linux.git

mt76: mt7615: check return value of mt7615_eeprom_get_power_index

mt7615_eeprom_get_power_index can return negative error value.
Check mt7615_eeprom_get_power_index return value before using it

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 81294bb2b06be..d831d647d2378 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -247,6 +247,9 @@ void mt7615_init_txpower(struct mt7615_dev *dev,
 			int index;
 
 			index = mt7615_eeprom_get_power_index(dev, chan, j);
+			if (index < 0)
+				continue;
+
 			target_power = max(target_power, eep[index]);
 		}