Commit 1855ad53 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
Browse files

mt76: mt7615: fix possible division by 0 in mt7615_mac_update_mib_stats 



Check that val is not zero before aggr_per estimation in order to avoid a
possible division by 0

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 9a865741

drivers/net/wireless/mediatek/mt76/mt7615/mac.c

+5 −3
Original line number Diff line number Diff line
@@ -1773,9 +1773,11 @@ mt7615_mac_update_mib_stats(struct mt7615_phy *phy) 


	val = mt76_get_field(dev, MT_MIB_SDR14(ext_phy),

			     MT_MIB_AMPDU_MPDU_COUNT);

	if (val) {

		val2 = mt76_get_field(dev, MT_MIB_SDR15(ext_phy),

				      MT_MIB_AMPDU_ACK_COUNT);

		mib->aggr_per = 1000 * (val - val2) / val;

	}



	aggr = ext_phy ? ARRAY_SIZE(dev->mt76.aggr_stats) / 2 : 0;

	for (i = 0; i < 4; i++) {