linux-kernel - Re: [PATCH] bus: imx-weim: fix branch condition evaluates to a garbage value

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Message-ID: <20230314011825.GZ143566@dragon>
Date:   Tue, 14 Mar 2023 09:18:25 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Ivan Bornyakov <i.bornyakov@...rotek.ru>
Cc:     linux-imx@....com, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] bus: imx-weim: fix branch condition evaluates to a
 garbage value

On Fri, Feb 17, 2023 at 04:59:50PM +0300, Ivan Bornyakov wrote:
> If bus type is other than imx50_weim_devtype and have no child devices,
> variable 'ret' in function weim_parse_dt() will not be initialized, but
> will be used as branch condition and return value. Fix this by
> initializing 'ret' with 0.
> 
> This was discovered with help of clang-analyzer, but the situation is
> quite possible in real life.
> 
> Signed-off-by: Ivan Bornyakov <i.bornyakov@...rotek.ru>
> Cc: stable@...r.kernel.org

Applied with Fixes tag below.  Let me know if it's incorrect.

Fixes: 52c47b63412b ("bus: imx-weim: improve error handling upon child probe-failure")

Shawn