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mt7601u: wait for clear rxq when stopping mac

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mt7601u_mac_stop_hw should stop polling the rxq once it remains empty
but instead continues polling after the rxq status stays clear; bringing
down the interface takes about six seconds from this alone.

Speed up path by exiting rxq loop once status repeatedly polls empty.

Signed-off-by: Anthony Romano <anthony.romano@coreos.com>
Reviewed-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Anthony Romano 2016-11-25 03:13:34 -08:00 committed by Kalle Valo
parent 53e3a80d80
commit 05db221e30
2 changed files with 10 additions and 7 deletions
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14
drivers/net/wireless/mediatek/mt7601u/init.c
View file

@ -293,13 +293,13 @@ static void mt7601u_mac_stop_hw(struct mt7601u_dev *dev)
ok = 0;
i = 200;
while (i--) {
if ((mt76_rr(dev, 0x0430) & 0x00ff0000) ||
(mt76_rr(dev, 0x0a30) & 0xffffffff) ||
(mt76_rr(dev, 0x0a34) & 0xffffffff))
ok++;
if (ok > 6)
break;
if (!(mt76_rr(dev, MT_RXQ_STA) & 0x00ff0000) &&
!mt76_rr(dev, 0x0a30) &&
!mt76_rr(dev, 0x0a34)) {
if (ok++ > 5)
break;
continue;
}
msleep(1);
}

3
drivers/net/wireless/mediatek/mt7601u/regs.h
View file

@ -192,6 +192,9 @@
#define MT_BCN_OFFSET_BASE 0x041c
#define MT_BCN_OFFSET(_n) (MT_BCN_OFFSET_BASE + ((_n) << 2))
#define MT_RXQ_STA 0x0430
#define MT_TXQ_STA 0x0434
#define MT_RF_CSR_CFG 0x0500
#define MT_RF_CSR_CFG_DATA GENMASK(7, 0)
#define MT_RF_CSR_CFG_REG_ID GENMASK(13, 8)