linux-kernel - Re: [PATCH v11 1/2] mfd: bd71837: mfd driver for ROHM BD71837 PMIC

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Date:   Fri, 3 Aug 2018 14:05:11 +0300
From:   Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     kbuild-all@...org, lee.jones@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, eballetbo@...il.com,
        linus.walleij@...aro.org, mazziesaccount@...il.com,
        dmitry.torokhov@...il.com, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        sboyd@...nel.org, broonie@...nel.org, linux-input@...r.kernel.org,
        mikko.mutanen@...rohmeurope.com, heikki.haikola@...rohmeurope.com
Subject: Re: [PATCH v11 1/2] mfd: bd71837: mfd driver for ROHM BD71837 PMIC

On Fri, Aug 03, 2018 at 06:10:21PM +0800, kbuild test robot wrote:
> smatch warnings:
> drivers/mfd/rohm-bd718x7.c:163 bd71837_i2c_probe() warn: unsigned 'button.irq' is never less than zero.
> 
>    160		button.irq = regmap_irq_get_virq(bd71837->irq_data,
>    161						  BD71837_INT_PWRBTN_S);
>    162	
>  > 163		if (button.irq < 0) {
>    164			dev_err(&i2c->dev, "Failed to get the IRQ\n");
>    165			return button.irq;
>    166		}

Comparing unsiged to smaller-than-zero. These tools are handy! I'll fix
the errno check and send v12 in a minute... (or a bit more - but soonish
in any case =])

Br,
	Matti Vaittinen