mt76: mt7663s: fix the possible device hang in high traffic

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[ Upstream commit 45247a8561 ]

Use the additional memory barrier to ensure the skb list up-to-date
between the skb producer and consumer to avoid the invalid skb content
written into sdio controller and then cause device hang due to mcu assert
caught by WR_TIMEOUT_INT.

Fixes: 1522ff731f ("mt76: mt7663s: introduce sdio tx aggregation")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Sean Wang 2021-03-04 21:25:23 +08:00 • committed by Greg Kroah-Hartman

parent 188dfc4702

commit de4e60382b

2 changed files with 5 additions and 0 deletions

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2

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

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3

drivers/net/wireless/mediatek/mt76/sdio.c

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