linux-kernel - Re: [PATCH -next] drm/amd/display: Fix unsigned comparison to zero

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Date:   Thu, 30 Apr 2020 12:32:26 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Zou Wei <zou_wei@...wei.com>
Cc:     "Wentland, Harry" <harry.wentland@....com>,
        "Leo (Sunpeng) Li" <sunpeng.li@....com>,
        "Deucher, Alexander" <alexander.deucher@....com>,
        Christian Koenig <christian.koenig@....com>,
        Chunming Zhou <David1.Zhou@....com>,
        Dave Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] drm/amd/display: Fix unsigned comparison to zero

Applied.  Thanks!

Alex

On Thu, Apr 30, 2020 at 3:33 AM Zou Wei <zou_wei@...wei.com> wrote:
>
> Fixes coccicheck warning:
>
> drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c:1398:60-61:
> WARNING: Unsigned expression compared with zero: j >= 0
>
> Fixes: 238387774232 ("drm/amd/display: fix rn soc bb update")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Zou Wei <zou_wei@...wei.com>
> ---
>  drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> index ceaf70a..419cdde 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> @@ -1384,7 +1384,8 @@ static void update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
>         struct dcn21_resource_pool *pool = TO_DCN21_RES_POOL(dc->res_pool);
>         struct clk_limit_table *clk_table = &bw_params->clk_table;
>         struct _vcs_dpi_voltage_scaling_st clock_limits[DC__VOLTAGE_STATES];
> -       unsigned int i, j, closest_clk_lvl;
> +       unsigned int i, closest_clk_lvl;
> +       int j;
>
>         // Default clock levels are used for diags, which may lead to overclocking.
>         if (!IS_DIAG_DC(dc->ctx->dce_environment)) {
> --
> 2.6.2
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx

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