linux-kernel - Re: [PATCH 2/5] drm/amd/display: remove useless FPU protection wrapper from dcn31

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Date:   Thu, 21 Jul 2022 14:55:46 -0400
From:   Rodrigo Siqueira Jordao <Rodrigo.Siqueira@....com>
To:     Melissa Wen <mwen@...lia.com>, harry.wentland@....com,
        sunpeng.li@....com, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
        daniel@...ll.ch
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Maíra Canal <mairacanal@...eup.net>,
        kernel-dev@...lia.com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] drm/amd/display: remove useless FPU protection
 wrapper from dcn31_resource file



On 2022-07-20 15:32, Melissa Wen wrote:
> Many lines of code in dcn31_resource_construct are wrapped by DC_FP
> macro to protect FPU operations; however, there is no FPU in this
> region. Therefore, just remove the wrapper for clarity.
> 
> Signed-off-by: Melissa Wen <mwen@...lia.com>
> ---
>   drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 6 ------
>   1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
> index 929b712cbada..6d25fcf865bf 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
> @@ -1863,8 +1863,6 @@ static bool dcn31_resource_construct(
>   	struct dc_context *ctx = dc->ctx;
>   	struct irq_service_init_data init_data;
>   
> -	DC_FP_START();
> -
>   	ctx->dc_bios->regs = &bios_regs;
>   
>   	pool->base.res_cap = &res_cap_dcn31;
> @@ -2175,13 +2173,9 @@ static bool dcn31_resource_construct(
>   
>   	dc->dcn_ip->max_num_dpp = dcn3_1_ip.max_num_dpp;
>   
> -	DC_FP_END();
> -
>   	return true;
>   
>   create_fail:
> -
> -	DC_FP_END();
>   	dcn31_resource_destruct(pool);
>   
>   	return false;

Very nice catch!

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@....com>