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mt76: use udelay instead of usleep_range in mt76x2_mac_stop 

usleep_range can cause excessive latency on channel change if waiting
for the MAC to stop fails. It will be forced to stop by the code
following that loop anyway.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2018-05-20 07:43:49 +02:00 committed by Kalle Valo
parent 26e40d4c0b
commit cbec83d40c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/mediatek/mt76/mt76x2_init.c
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@ -376,7 +376,7 @@ void mt76x2_mac_stop(struct mt76x2_dev *dev, bool force)
if ((mt76_rr(dev, MT_MAC_STATUS) & if ((mt76_rr(dev, MT_MAC_STATUS) &
(MT_MAC_STATUS_RX | MT_MAC_STATUS_TX)) || (MT_MAC_STATUS_RX | MT_MAC_STATUS_TX)) ||
mt76_rr(dev, MT_BBP(IBI, 12))) { mt76_rr(dev, MT_BBP(IBI, 12))) {
usleep_range(10, 20); udelay(1);
continue; continue;
} }