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Message-ID: <102f30e6-f159-3983-825c-7cb819c201f0@redhat.com>
Date: Mon, 31 Jul 2023 16:09:08 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Yang Li <yang.lee@...ux.alibaba.com>, Shyam-sundar.S-k@....com
Cc: markgross@...nel.org, platform-driver-x86@...r.kernel.org,
linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>
Subject: Re: [PATCH -next] platform/x86/amd/pmf: Fix unsigned comparison with
less than zero
Hi,
On 7/27/23 03:43, Yang Li wrote:
> The return value from the call to amd_pmf_get_pprof_modes() is int.
> However, the return value is being assigned to an unsigned char
> variable 'mode', so making 'mode' an int.
>
> silence the warning:
> ./drivers/platform/x86/amd/pmf/sps.c:183:5-9: WARNING: Unsigned expression compared with zero: mode < 0
>
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5995
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
Thank you for your patch, I've applied this patch to my fixes
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=fixes
Note it will show up in my fixes branch once I've pushed my
local branch there, which might take a while.
I will include this patch in my next fixes pull-req to Linus
for the current kernel development cycle.
Regards,
Hans
> ---
> drivers/platform/x86/amd/pmf/sps.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c
> index ab69d517a36a..a70e67749be3 100644
> --- a/drivers/platform/x86/amd/pmf/sps.c
> +++ b/drivers/platform/x86/amd/pmf/sps.c
> @@ -176,7 +176,8 @@ int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf)
>
> int amd_pmf_power_slider_update_event(struct amd_pmf_dev *dev)
> {
> - u8 mode, flag = 0;
> + u8 flag = 0;
> + int mode;
> int src;
>
> mode = amd_pmf_get_pprof_modes(dev);
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