linux-kernel - Re: [net-next v9 5/6] net: stmmac: Add glue layer for StarFive JH7110 SoC

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Message-ID: <20230328191716.18a302a1@kernel.org>
Date:   Tue, 28 Mar 2023 19:17:16 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Samin Guo <samin.guo@...rfivetech.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Jose Abreu <joabreu@...opsys.com>,
        Richard Cochran <richardcochran@...il.com>,
        Conor Dooley <conor@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Yanhong Wang <yanhong.wang@...rfivetech.com>,
        Tommaso Merciai <tomm.merciai@...il.com>
Subject: Re: [net-next v9 5/6] net: stmmac: Add glue layer for StarFive
 JH7110 SoC

On Tue, 28 Mar 2023 14:20:08 +0800 Samin Guo wrote:
> This adds StarFive dwmac driver support on the StarFive JH7110 SoC.
> 
> Tested-by: Tommaso Merciai <tomm.merciai@...il.com>
> Co-developed-by: Emil Renner Berthing <kernel@...il.dk>
> Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
> Signed-off-by: Samin Guo <samin.guo@...rfivetech.com>

Excellent, now it applies cleanly :)

Our clang build with W=1 complains that:

drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c:37:2: warning: variable 'rate' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
        default:
        ^~~~~~~
drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c:42:36: note: uninitialized use occurs here
        err = clk_set_rate(dwmac->clk_tx, rate);
                                          ^~~~
drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c:24:20: note: initialize the variable 'rate' to silence this warning
        unsigned long rate;
                          ^
                           = 0


not sure how you prefer to fix this. Maybe return early?