From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 11 Jul 2019 19:34:25 +0000 (+0200)
Subject: mt76: mt7615: fix invalid fallback rates
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f4635f66da8d2a1855fa0f9c6b2c1b342fdf527d;p=linux.git

mt76: mt7615: fix invalid fallback rates

Only decrement the rate index on duplicate rates if it is not already 0

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index fc98dabed594f..b3e8ee06a7839 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -503,6 +503,9 @@ void mt7615_mac_set_rates(struct mt7615_dev *dev, struct mt7615_sta *sta,
 			     IEEE80211_TX_RC_160_MHZ_WIDTH))
 				continue;
 
+			if (!rates[i].idx)
+				continue;
+
 			rates[i].idx--;
 		}