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mt76: mt7921: Fix out of order process by invalid event pkt

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[ Upstream commit cd3f387371 ]

The acceptable event report should inlcude original CMD-ID. Otherwise,
drop unexpected result from fw.

Fixes: 1c099ab447 ("mt76: mt7921: add MCU support")
Signed-off-by: Jimmy Hu <Jimmy.Hu@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Deren Wu
2021-07-14 23:50:52 +08:00
committed by Greg Kroah-Hartman
parent 75ed8ca355
commit 7f2d2c8d93
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
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@@ -157,6 +157,7 @@ mt7921_mcu_parse_response(struct mt76_dev *mdev, int cmd,
struct sk_buff *skb, int seq)
{
struct mt7921_mcu_rxd *rxd;
int mcu_cmd = cmd & MCU_CMD_MASK;
int ret = 0;
if (!skb) {
@@ -194,6 +195,9 @@ mt7921_mcu_parse_response(struct mt76_dev *mdev, int cmd,
skb_pull(skb, sizeof(*rxd));
event = (struct mt7921_mcu_uni_event *)skb->data;
ret = le32_to_cpu(event->status);
/* skip invalid event */
if (mcu_cmd != event->cid)
ret = -EAGAIN;
break;
}
case MCU_CMD_REG_READ: {