From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 23 Mar 2017 16:30:41 +0000 (-0400)
Subject: drm/amdgpu/gfx9: reserve kiq eop object before unmapping it
X-Git-Tag: v4.12~21^2~26^2~65
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7618a633095daaf42f054af153fa7970ee71cee;p=platform%2Fkernel%2Flinux-exynos.git

drm/amdgpu/gfx9: reserve kiq eop object before unmapping it

It's required.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 861b1ec..f46eb29 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -600,7 +600,11 @@ static int gfx_v9_0_kiq_init(struct amdgpu_device *adev)
 
 	memset(hpd, 0, MEC_HPD_SIZE);
 
+	r = amdgpu_bo_reserve(kiq->eop_obj, false);
+	if (unlikely(r != 0))
+		dev_warn(adev->dev, "(%d) reserve kiq eop bo failed\n", r);
 	amdgpu_bo_kunmap(kiq->eop_obj);
+	amdgpu_bo_unreserve(kiq->eop_obj);
 
 	return 0;
 }