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From 94463967db5d977cc647323b1fc9761bb0ad5da2 Mon Sep 17 00:00:00 2001
From: Flora Cui <Flora.Cui@amd.com>
Date: Thu, 4 Feb 2016 15:10:08 +0800
Subject: [PATCH 0931/1565] drm/amdgpu: fix s4 resume
No need to re-init asic if it's already been initialized.
Skip IB tests since kernel processes are frozen in thaw.
Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 85991ce..51bfc11 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1795,15 +1795,20 @@ int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
}
/* post card */
- amdgpu_atom_asic_init(adev->mode_info.atom_context);
+ if (!amdgpu_card_posted(adev))
+ amdgpu_atom_asic_init(adev->mode_info.atom_context);
r = amdgpu_resume(adev);
+ if (r)
+ DRM_ERROR("amdgpu_resume failed (%d).\n", r);
amdgpu_fence_driver_resume(adev);
- r = amdgpu_ib_ring_tests(adev);
- if (r)
- DRM_ERROR("ib ring test failed (%d).\n", r);
+ if (resume) {
+ r = amdgpu_ib_ring_tests(adev);
+ if (r)
+ DRM_ERROR("ib ring test failed (%d).\n", r);
+ }
r = amdgpu_late_init(adev);
if (r)
--
1.9.1
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