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Re: [PATCH] wifi: mt76: add memory barrier to SDIO queue kick

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To: Deren Wu <deren.wu@xxxxxxxxxxxx>, Felix Fietkau <nbd@xxxxxxxx>, Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Subject: Re: [PATCH] wifi: mt76: add memory barrier to SDIO queue kick
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Date: Mon, 16 Jan 2023 12:57:33 +0100
Cc: Sean Wang <sean.wang@xxxxxxxxxxxx>, Soul Huang <Soul.Huang@xxxxxxxxxxxx>, YN Chen <YN.Chen@xxxxxxxxxxxx>, Leon Yen <Leon.Yen@xxxxxxxxxxxx>, Eric-SY Chang <Eric-SY.Chang@xxxxxxxxxxxx>, KM Lin <km.lin@xxxxxxxxxxxx>, Robin Chiu <robin.chiu@xxxxxxxxxxxx>, CH Yeh <ch.yeh@xxxxxxxxxxxx>, Posh Sun <posh.sun@xxxxxxxxxxxx>, Stella Chang <Stella.Chang@xxxxxxxxxxxx>, Evelyn Tsai <evelyn.tsai@xxxxxxxxxxxx>, Ryder Lee <ryder.lee@xxxxxxxxxxxx>, Shayne Chen <shayne.chen@xxxxxxxxxxxx>, linux-wireless <linux-wireless@xxxxxxxxxxxxxxx>, linux-mediatek <linux-mediatek@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <2489b17e8249ef8db840edb6168888ff5c887a6b.1673754074.git.deren.wu@mediatek.com>
References: <2489b17e8249ef8db840edb6168888ff5c887a6b.1673754074.git.deren.wu@mediatek.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0

Il 15/01/23 05:44, Deren Wu ha scritto:

Ensure the entry has been fully updated before SDIO bus worker access
it. This patch would fix potential memory risk in both mt7663s and
mt7921s.

Fixes: 764dee47e2c1 ("mt76: sdio: move common code in mt76_sdio module")
Signed-off-by: Deren Wu <deren.wu@xxxxxxxxxxxx>


Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

References:
- [PATCH] wifi: mt76: add memory barrier to SDIO queue kick
  - From: Deren Wu

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