[PATCH V2 2/2] drm/amdgpu: No longer insert ras blocks into ras_list if it already exists in ras_list

[yipechai]

No longer insert ras blocks into ras_list if it already exists in ras_list.

Signed-off-by: yipechai <yipeng.c...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 614ae8455c9f..d208fde509de 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -2754,12 +2754,20 @@ int amdgpu_ras_reset_gpu(struct amdgpu_device *adev)
 int amdgpu_ras_register_ras_block(struct amdgpu_device *adev,
                struct amdgpu_ras_block_object* ras_block_obj)
 {
+       struct amdgpu_ras_block_object *obj, *tmp;
        if (!adev || !ras_block_obj)
                return -EINVAL;
 
        if (!amdgpu_ras_asic_supported(adev))
                return 0;
 
+       /* If the ras object is in ras_list, don't add it again */
+       list_for_each_entry_safe(obj, tmp, &adev->ras_list, node) {
+               if (obj == ras_block_obj) {
+                       return 0;
+               }
+       }
+
        INIT_LIST_HEAD(&ras_block_obj->node);
        list_add_tail(&ras_block_obj->node, &adev->ras_list);
 
-- 
2.25.1