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From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Tue, 6 Aug 2019 10:04:31 -0400
Message-ID: <CADnq5_OL1+bJUGh44AY48DP=G=xTtdrf+kO2233qjJzudWhw_Q@mail.gmail.com>
Subject: Re: [PATCH] gpu: drm: amd: display: dc: dcn20: Remove redudant condition
To:     Hariprasad Kelam <hariprasad.kelam@gmail.com>
Cc:     Harry Wentland <harry.wentland@amd.com>,
        Leo Li <sunpeng.li@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>,
        "David (ChunMing) Zhou" <David1.Zhou@amd.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Nikola Cornij <nikola.cornij@amd.com>,
        Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>,
        Colin Ian King <colin.king@canonical.com>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@lists.freedesktop.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Mon, Aug 5, 2019 at 3:01 PM Hariprasad Kelam
<hariprasad.kelam@gmail.com> wrote:
>
> Remove redudant codition "dsc_cfg->dc_dsc_cfg.num_slices_v".
>
> fixes coverity defect 1451853
>
> Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
> ---
>  drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
> index e870caa..42133bd 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
> @@ -302,7 +302,7 @@ static bool dsc_prepare_config(struct display_stream_compressor *dsc, const stru
>                     dsc_cfg->dc_dsc_cfg.linebuf_depth == 0)));
>         ASSERT(96 <= dsc_cfg->dc_dsc_cfg.bits_per_pixel && dsc_cfg->dc_dsc_cfg.bits_per_pixel <= 0x3ff); // 6.0 <= bits_per_pixel <= 63.9375
>
> -       if (!dsc_cfg->dc_dsc_cfg.num_slices_v || !dsc_cfg->dc_dsc_cfg.num_slices_v ||
> +       if (!dsc_cfg->dc_dsc_cfg.num_slices_v ||

Harry, can you or Nick check if this should be something else?  maybe
a copy paste typo.

Alex

>                 !(dsc_cfg->dc_dsc_cfg.version_minor == 1 || dsc_cfg->dc_dsc_cfg.version_minor == 2) ||
>                 !dsc_cfg->pic_width || !dsc_cfg->pic_height ||
>                 !((dsc_cfg->dc_dsc_cfg.version_minor == 1 && // v1.1 line buffer depth range:
> --
> 2.7.4
>
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