[RFC PATCH 06/13] drm/amdgpu: enhance amdgpu_ras_block_late_fini()

[Jiang Liu <gerry@xxxxxxxxxxxxxxxxx>]

Enhance amdgpu_ras_block_late_fini() to revert what has been done
by amdgpu_ras_block_late_init(), and fix a possible resource leakage
in function amdgpu_ras_block_late_init().

Signed-off-by: Jiang Liu <gerry@xxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 41978116b92b..040969d56541 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -3898,13 +3898,13 @@ int amdgpu_ras_block_late_init(struct amdgpu_device *adev,
 	     ras_obj->hw_ops->query_ras_error_status)) {
 		r = amdgpu_ras_sysfs_create(adev, ras_block);
 		if (r)
-			goto interrupt;
+			goto cleanup;
 
 		/* Those are the cached values at init.
 		 */
 		query_info = kzalloc(sizeof(*query_info), GFP_KERNEL);
 		if (!query_info)
-			return -ENOMEM;
+			goto cleanup;
 		memcpy(&query_info->head, ras_block, sizeof(struct ras_common_if));
 
 		if (amdgpu_ras_query_error_count(adev, &ce_count, &ue_count, query_info) == 0) {
@@ -3917,11 +3917,8 @@ int amdgpu_ras_block_late_init(struct amdgpu_device *adev,
 
 	return 0;
 
-interrupt:
-	if (ras_obj->ras_cb)
-		amdgpu_ras_interrupt_remove_handler(adev, ras_block);
 cleanup:
-	amdgpu_ras_feature_enable(adev, ras_block, 0);
+	amdgpu_ras_block_late_fini(adev, ras_block);
 	return r;
 }
 
@@ -3936,9 +3933,16 @@ void amdgpu_ras_block_late_fini(struct amdgpu_device *adev,
 			  struct ras_common_if *ras_block)
 {
 	struct amdgpu_ras_block_object *ras_obj;
+
 	if (!ras_block)
 		return;
 
+	amdgpu_ras_feature_enable(adev, ras_block, 0);
+
+	/* in resume/reset phase, no need to delete ras fs node */
+	if (adev->in_suspend || amdgpu_in_reset(adev))
+		return;
+
 	amdgpu_ras_sysfs_remove(adev, ras_block);
 
 	ras_obj = container_of(ras_block, struct amdgpu_ras_block_object, ras_comm);
-- 
2.43.5