linux-kernel - RE: [PATCH] drm/amd/display: fix if == else warning

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Message-ID: <DM4PR12MB52143C2204F820E49D377A519EF99@DM4PR12MB5214.namprd12.prod.outlook.com>
Date:   Sun, 24 Apr 2022 20:15:15 +0000
From:   "Liu, Zhan" <Zhan.Liu@....com>
To:     Guo Zhengkui <guozhengkui@...o.com>,
        "Wentland, Harry" <Harry.Wentland@....com>,
        "Li, Sun peng (Leo)" <Sunpeng.Li@....com>,
        "Siqueira, Rodrigo" <Rodrigo.Siqueira@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "Liu, Charlene" <Charlene.Liu@....com>,
        "Lei, Jun" <Jun.Lei@....com>,
        José Expósito <jose.exposito89@...il.com>,
        "open list:AMD DISPLAY CORE" <amd-gfx@...ts.freedesktop.org>,
        "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>
CC:     "zhengkui_guo@...look.com" <zhengkui_guo@...look.com>
Subject: RE: [PATCH] drm/amd/display: fix if == else warning

[AMD Official Use Only - General]

> -----Original Message-----
> From: Guo Zhengkui <guozhengkui@...o.com>
> Sent: 2022/April/24, Sunday 5:06 AM
> To: Wentland, Harry <Harry.Wentland@....com>; Li, Sun peng (Leo)
> <Sunpeng.Li@....com>; Siqueira, Rodrigo <Rodrigo.Siqueira@....com>;
> Deucher, Alexander <Alexander.Deucher@....com>; Koenig, Christian
> <Christian.Koenig@....com>; Pan, Xinhui <Xinhui.Pan@....com>; David Airlie
> <airlied@...ux.ie>; Daniel Vetter <daniel@...ll.ch>; Liu, Charlene
> <Charlene.Liu@....com>; Lei, Jun <Jun.Lei@....com>; Guo Zhengkui
> <guozhengkui@...o.com>; Liu, Zhan <Zhan.Liu@....com>; José Expósito
> <jose.exposito89@...il.com>; open list:AMD DISPLAY CORE <amd-
> gfx@...ts.freedesktop.org>; open list:DRM DRIVERS <dri-
> devel@...ts.freedesktop.org>; open list <linux-kernel@...r.kernel.org>
> Cc: zhengkui_guo@...look.com
> Subject: [PATCH] drm/amd/display: fix if == else warning
>
> Fix the following coccicheck warning:
>
> drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c:98:8-10:
> WARNING: possible condition with no effect (if == else)
>
> Signed-off-by: Guo Zhengkui <guozhengkui@...o.com>

Thanks a lot for fixing this warning.

Reviewed-by: Zhan Liu <zhan.liu@....com>

> ---
>  drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c
> b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c
> index fe22530242d2..05b3fba9ccce 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_hwseq.c
> @@ -95,8 +95,6 @@ static void gpu_addr_to_uma(struct dce_hwseq *hwseq,
>       } else if (hwseq->fb_offset.quad_part <= addr->quad_part &&
>                       addr->quad_part <= hwseq->uma_top.quad_part) {
>               is_in_uma = true;
> -     } else if (addr->quad_part == 0) {
> -             is_in_uma = false;
>       } else {
>               is_in_uma = false;
>       }
> --
> 2.20.1