From 799028d5d85384cce140323be633c8d5f079193f Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 18 Sep 2014 10:18:43 -0400
Subject: [PATCH] drm/radeon: don't reset sdma on CIK init
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Otherwise we may lose the DMA golden settings which can
lead to hangs, etc.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/radeon/cik_sdma.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index 192278bc993ce5..c4ffa54b1e3df5 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -489,13 +489,6 @@ int cik_sdma_resume(struct radeon_device *rdev)
{
int r;
- /* Reset dma */
- WREG32(SRBM_SOFT_RESET, SOFT_RESET_SDMA | SOFT_RESET_SDMA1);
- RREG32(SRBM_SOFT_RESET);
- udelay(50);
- WREG32(SRBM_SOFT_RESET, 0);
- RREG32(SRBM_SOFT_RESET);
-
r = cik_sdma_load_microcode(rdev);
if (r)
return r;
--
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