linux-kernel - Re: [PATCH] net: stmmac: Variable "val" in function sun8i_dwmac_set

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Message-ID: <20190208074458.edgvwfgytlio62yn@flea>
Date:   Fri, 8 Feb 2019 08:44:58 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Yizhuo <yzhai003@....edu>
Cc:     csong@...ucr.edu, zhiyunq@...ucr.edu,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Chen-Yu Tsai <wens@...e.org>, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: stmmac: Variable "val" in function
 sun8i_dwmac_set_syscon() could be uninitialized

On Thu, Feb 07, 2019 at 09:46:23AM -0800, Yizhuo wrote:
> In function sun8i_dwmac_set_syscon(), local variable "val" could
> be uninitialized if function regmap_read() returns -EINVAL.
> However, it will be used directly in the if statement, which
> is potentially unsafe.
> 
> Signed-off-by: Yizhuo <yzhai003@....edu>

Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>

Thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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