linux-kernel - Re: [PATCH net-next v7 5/6] stmmac: dwmac-mediatek: add support for mt8195

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Message-ID: <20211208063820.264df62d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 8 Dec 2021 06:38:20 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Biao Huang <biao.huang@...iatek.com>
Cc:     <davem@...emloft.net>, Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <srv_heupstream@...iatek.com>, <macpaul.lin@...iatek.com>,
        <angelogioacchino.delregno@...labora.com>, <dkirjanov@...e.de>
Subject: Re: [PATCH net-next v7 5/6] stmmac: dwmac-mediatek: add support for
 mt8195

On Wed, 8 Dec 2021 13:47:15 +0800 Biao Huang wrote:
> Add Ethernet support for MediaTek SoCs from the mt8195 family.
> 
> Signed-off-by: Biao Huang <biao.huang@...iatek.com>
> Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

sparse reports whole bunch of warnings like this:

drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:213:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:217:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:228:38: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:232:38: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:247:46: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:255:46: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:273:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:277:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:375:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:379:30: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:390:43: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:397:43: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:415:46: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:426:46: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:439:35: warning: dubious: x & !y
drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c:443:30: warning: dubious: x & !y

Any idea on where these come from?