[PATCH] drm/amdkfd: Add sync after creating vram bo

[Eric Huang]

There will be data corruption on vram allocated by svm
if initialization is not being done. Adding sync is to
resolve this issue.

Signed-off-by: Eric Huang <jinhuieric.huang at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index b8c9753a4818..344e20306635 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -574,6 +574,13 @@ svm_range_vram_node_new(struct amdgpu_device *adev, struct svm_range *prange,
 		goto reserve_bo_failed;
 	}
 
+	r = amdgpu_bo_sync_wait(bo, AMDGPU_FENCE_OWNER_KFD, false);
+	if (r) {
+		pr_debug("failed %d to sync bo\n", r);
+		amdgpu_bo_unreserve(bo);
+		goto reserve_bo_failed;
+	}
+
 	r = dma_resv_reserve_fences(amdkcl_ttm_resvp(&bo->tbo), 1);
 	if (r) {
 		pr_debug("failed %d to reserve bo\n", r);
-- 
2.34.1