linux-kernel - RE: [PATCH] drm/amd/pm: remove unused num_of_active

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Message-ID: <DM6PR12MB26199298CA3AFC2736E8E9CDE4959@DM6PR12MB2619.namprd12.prod.outlook.com>
Date:   Mon, 10 Apr 2023 00:48:04 +0000
From:   "Quan, Evan" <Evan.Quan@....com>
To:     Tom Rix <trix@...hat.com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        "airlied@...il.com" <airlied@...il.com>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "nathan@...nel.org" <nathan@...nel.org>,
        "ndesaulniers@...gle.com" <ndesaulniers@...gle.com>,
        "Zhang, Hawking" <Hawking.Zhang@....com>,
        "Feng, Kenneth" <Kenneth.Feng@....com>,
        "Lazar, Lijo" <Lijo.Lazar@....com>,
        "Wang, Yang(Kevin)" <KevinYang.Wang@....com>,
        "Huang, Tim" <Tim.Huang@....com>,
        "andrealmeid@...lia.com" <andrealmeid@...lia.com>,
        "Liu, Kun" <Kun.Liu2@....com>,
        "Limonciello, Mario" <Mario.Limonciello@....com>
CC:     "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>
Subject: RE: [PATCH] drm/amd/pm: remove unused num_of_active_display variable

[AMD Official Use Only - General]

Reviewed-by: Evan Quan <evan.quan@....com>

> -----Original Message-----
> From: Tom Rix <trix@...hat.com>
> Sent: Saturday, April 1, 2023 12:41 AM
> To: Quan, Evan <Evan.Quan@....com>; Deucher, Alexander
> <Alexander.Deucher@....com>; Koenig, Christian
> <Christian.Koenig@....com>; Pan, Xinhui <Xinhui.Pan@....com>;
> airlied@...il.com; daniel@...ll.ch; nathan@...nel.org;
> ndesaulniers@...gle.com; Zhang, Hawking <Hawking.Zhang@....com>;
> Feng, Kenneth <Kenneth.Feng@....com>; Lazar, Lijo
> <Lijo.Lazar@....com>; Wang, Yang(Kevin) <KevinYang.Wang@....com>;
> Huang, Tim <Tim.Huang@....com>; andrealmeid@...lia.com; Liu, Kun
> <Kun.Liu2@....com>; Limonciello, Mario <Mario.Limonciello@....com>
> Cc: amd-gfx@...ts.freedesktop.org; dri-devel@...ts.freedesktop.org; linux-
> kernel@...r.kernel.org; llvm@...ts.linux.dev; Tom Rix <trix@...hat.com>
> Subject: [PATCH] drm/amd/pm: remove unused num_of_active_display
> variable
> 
> clang with W=1 reports
> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:1700:6: error:
> variable
>   'num_of_active_display' set but not used [-Werror,-Wunused-but-set-
> variable]
>         int num_of_active_display = 0;
>             ^
> This variable is not used so remove it.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> index b5d64749990e..f93f7a9ed631 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> @@ -1696,8 +1696,6 @@ static int smu_display_configuration_change(void
> *handle,
>  					    const struct
> amd_pp_display_configuration *display_config)  {
>  	struct smu_context *smu = handle;
> -	int index = 0;
> -	int num_of_active_display = 0;
> 
>  	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
>  		return -EOPNOTSUPP;
> @@ -1708,11 +1706,6 @@ static int smu_display_configuration_change(void
> *handle,
>  	smu_set_min_dcef_deep_sleep(smu,
>  				    display_config-
> >min_dcef_deep_sleep_set_clk / 100);
> 
> -	for (index = 0; index < display_config-
> >num_path_including_non_display; index++) {
> -		if (display_config->displays[index].controller_id != 0)
> -			num_of_active_display++;
> -	}
> -
>  	return 0;
>  }
> 
> --
> 2.27.0