linux-kernel - Re: [PATCH net-next v2] net: ethernet: ti: cpsw-phy-sel: check bus_find

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Date:   Wed, 16 May 2018 14:13:32 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     grygorii.strashko@...com
Cc:     netdev@...r.kernel.org, nsekhar@...com,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH net-next v2] net: ethernet: ti: cpsw-phy-sel: check
 bus_find_device() ret value

From: Grygorii Strashko <grygorii.strashko@...com>
Date: Tue, 15 May 2018 18:37:25 -0500

> This fixes klockworks warnings: Pointer 'dev' returned from call to
> function 'bus_find_device' at line 179 may be NULL and will be dereferenced
> at line 181.
> 
>     cpsw-phy-sel.c:179: 'dev' is assigned the return value from function 'bus_find_device'.
>     bus.c:342: 'bus_find_device' explicitly returns a NULL value.
>     cpsw-phy-sel.c:181: 'dev' is dereferenced by passing argument 1 to function 'dev_get_drvdata'.
>     device.h:1024: 'dev' is passed to function 'dev_get_drvdata'.
>     device.h:1026: 'dev' is explicitly dereferenced.
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
> [nsekhar@...com: add an error message, fix return path]
> Signed-off-by: Sekhar Nori <nsekhar@...com>
> ---
> v2: use %pOF

Applied, thank you.