[PATCH 2/2] drm/amdgpu: cleanup debugfs for amdgpu rings

[Nirmoy Das <nirmoy.das@amd.com>]

Use debugfs_create_file_size API for creating ring debugfs
file, also cleanup surrounding code.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c |  4 +---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c    | 16 +++++-----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h    |  8 +-------
 3 files changed, 7 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 077f9baf74fe..dee56ab19a8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1734,9 +1734,7 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		if (!ring)
 			continue;
 
-		if (amdgpu_debugfs_ring_init(adev, ring)) {
-			DRM_ERROR("Failed to register debugfs file for rings !\n");
-		}
+		amdgpu_debugfs_ring_init(adev, ring);
 	}
 
 	amdgpu_ras_debugfs_create_all(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index f40753e1a60d..968521d80514 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -415,26 +415,20 @@ static const struct file_operations amdgpu_debugfs_ring_fops = {
 
 #endif
 
-int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+void amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
 			     struct amdgpu_ring *ring)
 {
 #if defined(CONFIG_DEBUG_FS)
 	struct drm_minor *minor = adev_to_drm(adev)->primary;
-	struct dentry *ent, *root = minor->debugfs_root;
+	struct dentry *root = minor->debugfs_root;
 	char name[32];
 
 	sprintf(name, "amdgpu_ring_%s", ring->name);
 
-	ent = debugfs_create_file(name,
-				  S_IFREG | S_IRUGO, root,
-				  ring, &amdgpu_debugfs_ring_fops);
-	if (IS_ERR(ent))
-		return -ENOMEM;
-
-	i_size_write(ent->d_inode, ring->ring_size + 12);
-	ring->ent = ent;
+	debugfs_create_file_size(name, S_IFREG | S_IRUGO, root, ring,
+				 &amdgpu_debugfs_ring_fops,
+				 ring->ring_size + 12);
 #endif
-	return 0;
 }
 
 /**
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 88d80eb3fea1..c29fbce0a5b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -253,10 +253,6 @@ struct amdgpu_ring {
 	bool			has_compute_vm_bug;
 	bool			no_scheduler;
 	int			hw_prio;
-
-#if defined(CONFIG_DEBUG_FS)
-	struct dentry *ent;
-#endif
 };
 
 #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))
@@ -356,8 +352,6 @@ static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
 
 int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
 
-int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+void amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
 			     struct amdgpu_ring *ring);
-void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
-
 #endif
-- 
2.32.0