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

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Message-ID: <CABvMjLRzuUVh7FxVQj2O40Sbr+VygwSG8spMv0fW2RZVvaJ8rQ@mail.gmail.com>
Date:   Fri, 30 Aug 2019 15:29:07 -0700
From:   Yizhuo Zhai <yzhai003@....edu>
To:     David Miller <davem@...emloft.net>
Cc:     Chengyu Song <csong@...ucr.edu>, Zhiyun Qian <zhiyunq@...ucr.edu>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Maxime Ripard <maxime.ripard@...e-electrons.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

Hi David:

Thanks for your feedback, this patch should work for v4.14.


On Fri, Feb 8, 2019 at 11:01 PM David Miller <davem@...emloft.net> wrote:
>
> From: Yizhuo <yzhai003@....edu>
> Date: Thu,  7 Feb 2019 09:46:23 -0800
>
> > 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>
>
> This doesn't apply to any of my trees.



--
Kind Regards,

Yizhuo Zhai

Computer Science, Graduate Student
University of California, Riverside