linux-kernel - Re: [PATCH] drm/amd/display: remove redundant initialization of variable result

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Date:   Wed, 1 Jul 2020 13:05:23 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>, kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/amd/display: remove redundant initialization of
 variable result

On Wed, Jul 1, 2020 at 10:59 AM Colin King <colin.king@...onical.com> wrote:
>
> From: Colin Ian King <colin.king@...onical.com>
>
> The variable result is being initialized with a value that is never read
> and it is being updated later with a new value.  The initialization is
> redundant and can be removed.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
> index 1b3474aa380d..d0a23b72e604 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
> @@ -151,7 +151,8 @@ bool edp_receiver_ready_T9(struct dc_link *link)
>         unsigned int tries = 0;
>         unsigned char sinkstatus = 0;
>         unsigned char edpRev = 0;
> -       enum dc_status result = DC_OK;
> +       enum dc_status result;
> +
>         result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
>
>       /* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/
> @@ -177,7 +178,7 @@ bool edp_receiver_ready_T7(struct dc_link *link)
>  {
>         unsigned char sinkstatus = 0;
>         unsigned char edpRev = 0;
> -       enum dc_status result = DC_OK;
> +       enum dc_status result;
>
>         /* use absolute time stamp to constrain max T7*/
>         unsigned long long enter_timestamp = 0;
> --
> 2.27.0
>
> _______________________________________________
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> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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