linux-kernel - [PATCH 1/1] drm/amdgpu/gmc8: remove dead code

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Date:   Sun, 21 Aug 2016 20:10:41 +0200
From:   Heinrich Schuchardt <xypron.glpk@....de>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>
Cc:     David Airlie <airlied@...ux.ie>,
        Chunming Zhou <David1.Zhou@....com>,
        Ken Wang <Qingqing.Wang@....com>,
        Tom St Denis <tom.stdenis@....com>,
        Flora Cui <Flora.Cui@....com>,
        Eric Huang <JinHuiEric.Huang@....com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <xypron.glpk@....de>
Subject: [PATCH 1/1] drm/amdgpu/gmc8: remove dead code

In an if block for (running == 0) running cannot be non-zero.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 2aee2c6..92407cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -287,11 +287,6 @@ static int gmc_v8_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);
@@ -323,9 +318,6 @@ static int gmc_v8_0_mc_load_microcode(struct amdgpu_device *adev)
 				break;
 			udelay(1);
 		}
-
-		if (running)
-			WREG32(mmMC_SHARED_BLACKOUT_CNTL, blackout);
 	}
 
 	return 0;
-- 
2.1.4