linux-kernel - Re: [PATCH] drm/amd/display: remove unused matching_stream

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Date:   Mon, 10 Apr 2023 10:47:46 -0400
From:   Hamza Mahfooz <hamza.mahfooz@....com>
To:     Tom Rix <trix@...hat.com>, harry.wentland@....com,
        sunpeng.li@....com, Rodrigo.Siqueira@....com,
        alexander.deucher@....com, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        nathan@...nel.org, ndesaulniers@...gle.com, Jun.Lei@....com,
        wenjing.liu@....com, Jimmy.Kizito@....com, Cruise.Hung@....com
Cc:     llvm@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amd/display: remove unused matching_stream_ptrs
 variable

On 3/25/23 09:45, Tom Rix wrote:
> clang with W=1 reports
> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_enc_cfg.c:625:6: error:
>    variable 'matching_stream_ptrs' set but not used [-Werror,-Wunused-but-set-variable]
>          int matching_stream_ptrs = 0;
>              ^
> This variable is not used so remove it.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>

Applied, thanks!

> ---
>   drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c | 5 +----
>   1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
> index 41198c729d90..30c0644d4418 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c
> @@ -622,7 +622,6 @@ bool link_enc_cfg_validate(struct dc *dc, struct dc_state *state)
>   	int i, j;
>   	uint8_t valid_count = 0;
>   	uint8_t dig_stream_count = 0;
> -	int matching_stream_ptrs = 0;
>   	int eng_ids_per_ep_id[MAX_PIPES] = {0};
>   	int ep_ids_per_eng_id[MAX_PIPES] = {0};
>   	int valid_bitmap = 0;
> @@ -645,9 +644,7 @@ bool link_enc_cfg_validate(struct dc *dc, struct dc_state *state)
>   		struct link_enc_assignment assignment = state->res_ctx.link_enc_cfg_ctx.link_enc_assignments[i];
>   
>   		if (assignment.valid) {
> -			if (assignment.stream == state->streams[i])
> -				matching_stream_ptrs++;
> -			else
> +			if (assignment.stream != state->streams[i])
>   				valid_stream_ptrs = false;
>   		}
>   	}
-- 
Hamza