linux-kernel - Re: [PATCH 1/1] drm/amdgpu/gmc7: remove dead code

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Date:   Mon, 22 Aug 2016 09:49:22 +0200
From:   Christian König <deathsimple@...afone.de>
To:     Heinrich Schuchardt <xypron.glpk@....de>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>
Cc:     Tom St Denis <tom.stdenis@....com>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, Ken Wang <Qingqing.Wang@....com>
Subject: Re: [PATCH 1/1] drm/amdgpu/gmc7: remove dead code

Am 21.08.2016 um 20:06 schrieb Heinrich Schuchardt:
> In an if block for (running == 0) running cannot be non-zero.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>

The following patches are all Reviewed-by: Christian König 
<christian.koenig@....com>:

[PATCH 1/1] drm/amdgpu/gmc7: remove dead code
[PATCH 1/1] drm/amdgpu/gmc8: remove dead code
[PATCH 1/1] drm/amd/powerplay: avoid NULL pointer dereference
[PATCH 1/1] drm/amd/powerplay: avoid NULL dereference, cz_hwmgr.c
[PATCH 1/1] drm/radeon/cik: remove dead code
[PATCH 1/1] drm/radeon: remove dead code, si_mc_load_microcode

Thanks for the help,
Christian.

PS: Please send such minor cleanups as one set of patches next time, 
cause that makes reviewing them much easier.

> ---
>   drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 8 --------
>   1 file changed, 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> index 0b0f086..1239463 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> @@ -203,11 +203,6 @@ static int gmc_v7_0_mc_load_microcode(struct amdgpu_device *adev)
>   	running = REG_GET_FIELD(RREG32(mmMC_SEQ_SUP_CNTL), MC_SEQ_SUP_CNTL, RUN);
>   
>   	if (running == 0) {
> -		if (running) {
> -			blackout = RREG32(mmMC_SHARED_BLACKOUT_CNTL);
> -			WREG32(mmMC_SHARED_BLACKOUT_CNTL, blackout | 1);
> -		}
> -
>   		/* reset the engine and set to writable */
>   		WREG32(mmMC_SEQ_SUP_CNTL, 0x00000008);
>   		WREG32(mmMC_SEQ_SUP_CNTL, 0x00000010);
> @@ -239,9 +234,6 @@ static int gmc_v7_0_mc_load_microcode(struct amdgpu_device *adev)
>   				break;
>   			udelay(1);
>   		}
> -
> -		if (running)
> -			WREG32(mmMC_SHARED_BLACKOUT_CNTL, blackout);
>   	}
>   
>   	return 0;