linux-kernel - Re: [PATCH v1 net-next 1/3] net: mdio: mscc-miim: convert to a regmap implementation

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Message-ID: <20211120212324.GA2497840@euler>
Date:   Sat, 20 Nov 2021 13:23:24 -0800
From:   Colin Foster <colin.foster@...advantage.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Vladimir Oltean <vladimir.oltean@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v1 net-next 1/3] net: mdio: mscc-miim: convert to a
 regmap implementation

Hi Jakub,

Kernel Test Robot caught this as well. I'll fix in v2. Thanks for the
feedback!

On Fri, Nov 19, 2021 at 07:56:10PM -0800, Jakub Kicinski wrote:
> On Fri, 19 Nov 2021 13:39:16 -0800 Colin Foster wrote:
> > Utilize regmap instead of __iomem to perform indirect mdio access. This
> > will allow for custom regmaps to be used by way of the mscc_miim_setup
> > function.
> > 
> > Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> 
> clang says:
> 
> drivers/net/mdio/mdio-mscc-miim.c:228:30: warning: variable 'bus' is uninitialized when used here [-Wuninitialized]
>         mscc_miim_setup(&pdev->dev, bus, mii_regmap, phy_regmap);
> 
> drivers/net/mdio/mdio-mscc-miim.c:216:13: warning: variable 'dev' is uninitialized when used here [-Wuninitialized]
>         if (IS_ERR(dev->phy_regs)) {
>                    ^~~