linux-kernel - Re: [PATCH v2] platform: sps: Fix an unsigned comparison that can never be negative

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Date:   Sun, 13 Aug 2023 14:46:19 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     coolrrsh@...il.com, Shyam-sundar.S-k@....com, markgross@...nel.org,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH v2] platform: sps: Fix an unsigned comparison that can
 never be negative

Hi,

On 8/13/23 13:08, coolrrsh@...il.com wrote:
> From: Rajeshwar R Shinde <coolrrsh@...il.com>
> 
> The variable 'mode' is declared as unsigned int in local function.
> The return value of function amd_pmf_get_pprof_modes(dev) is int and
> it is stored in the 'mode' variable. Also the value of 'mode' variable
> is compared with 0 which is signed int by default. Thus redeclaring the
> variable to signed int.
> 
> This fixes warning such as:
> drivers/platform/x86/amd/pmf/sps.c:128:5-9:
> WARNING: Unsigned expression compared with zero: mode < 0
> 
> Signed-off-by: Rajeshwar R Shinde <coolrrsh@...il.com>

Thank you your patch.

This has already been fixed by a patch which is pending in the pdx86/fixes branch:

https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?h=fixes&id=785c00993dc4c4bb2f7b0f3a3f29c03a6f7aab2e
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=fixes

Regards,

Hans