linux-kernel - Re: [PATCH -next] drm/amdgpu/navi10: fix unsigned comparison with 0

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Message-ID: <CADnq5_Nz4LjOwfgA6---RSQmMjXOPjii4M-3qYmXW7ECbjdcwg@mail.gmail.com>
Date:   Wed, 6 May 2020 16:12:51 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     ChenTao <chentao107@...wei.com>
Cc:     Dave Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        LKML <linux-kernel@...r.kernel.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        "Deucher, Alexander" <alexander.deucher@....com>,
        Christian Koenig <christian.koenig@....com>
Subject: Re: [PATCH -next] drm/amdgpu/navi10: fix unsigned comparison with 0

On Wed, May 6, 2020 at 3:03 AM ChenTao <chentao107@...wei.com> wrote:
>
> Fixes warning because size is uint32_t and can never be negtative
>
> drivers/gpu/drm/amd/amdgpu/../powerplay/navi10_ppt.c:1296:12: warning:
> comparison of unsigned expression < 0 is always false [-Wtype-limits]
>    if (size < 0)
>
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: ChenTao <chentao107@...wei.com>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> index 2184d247a9f7..0c9be864d072 100644
> --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> @@ -1293,8 +1293,6 @@ static int navi10_set_power_profile_mode(struct smu_context *smu, long *input, u
>         }
>
>         if (smu->power_profile_mode == PP_SMC_POWER_PROFILE_CUSTOM) {
> -               if (size < 0)
> -                       return -EINVAL;
>
>                 ret = smu_update_table(smu,
>                                        SMU_TABLE_ACTIVITY_MONITOR_COEFF, WORKLOAD_PPLIB_CUSTOM_BIT,
> --
> 2.22.0
>
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> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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