linux-kernel - Re: [PATCH] drm/amdgpu: remove redundant NULL check

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Date:   Thu, 24 Nov 2022 16:00:15 -0500
From:   Luben Tuikov <luben.tuikov@....com>
To:     zys.zljxml@...il.com, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com,
        daniel@...ll.ch
Cc:     Yushan Zhou <katrinzhou@...cent.com>,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amdgpu: remove redundant NULL check

Applied.

Thanks,
Luben

On 2022-11-23 02:44, zys.zljxml@...il.com wrote:
> From: Yushan Zhou <katrinzhou@...cent.com>
> 
> release_firmware() checks whether firmware pointer is NULL.
> Remove the redundant NULL check in psp_sw_fini().
> 
> Signed-off-by: Yushan Zhou <katrinzhou@...cent.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 36 +++++++++++--------------
>  1 file changed, 16 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index effa7df3ddbf..77b966ab5439 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -484,26 +484,22 @@ static int psp_sw_fini(void *handle)
>  	struct psp_gfx_cmd_resp *cmd = psp->cmd;
>  
>  	psp_memory_training_fini(psp);
> -	if (psp->sos_fw) {
> -		release_firmware(psp->sos_fw);
> -		psp->sos_fw = NULL;
> -	}
> -	if (psp->asd_fw) {
> -		release_firmware(psp->asd_fw);
> -		psp->asd_fw = NULL;
> -	}
> -	if (psp->ta_fw) {
> -		release_firmware(psp->ta_fw);
> -		psp->ta_fw = NULL;
> -	}
> -	if (psp->cap_fw) {
> -		release_firmware(psp->cap_fw);
> -		psp->cap_fw = NULL;
> -	}
> -	if (psp->toc_fw) {
> -		release_firmware(psp->toc_fw);
> -		psp->toc_fw = NULL;
> -	}
> +
> +	release_firmware(psp->sos_fw);
> +	psp->sos_fw = NULL;
> +
> +	release_firmware(psp->asd_fw);
> +	psp->asd_fw = NULL;
> +
> +	release_firmware(psp->ta_fw);
> +	psp->ta_fw = NULL;
> +
> +	release_firmware(psp->cap_fw);
> +	psp->cap_fw = NULL;
> +
> +	release_firmware(psp->toc_fw);
> +	psp->toc_fw = NULL;
> +
>  	if (adev->ip_versions[MP0_HWIP][0] == IP_VERSION(11, 0, 0) ||
>  	    adev->ip_versions[MP0_HWIP][0] == IP_VERSION(11, 0, 7))
>  		psp_sysfs_fini(adev);