debugfs APIs returns encoded error so use
IS_ERR for checking return value.

References: https://gitlab.freedesktop.org/drm/amd/-/issues/1686
Signed-off-by: Nirmoy Das <nirmoy....@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 6 ++----
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c    | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index d256215ab2c7..077f9baf74fe 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1696,18 +1696,16 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
        struct dentry *ent;
        int r, i;
 
-
-
        ent = debugfs_create_file("amdgpu_preempt_ib", 0600, root, adev,
                                  &fops_ib_preempt);
-       if (!ent) {
+       if (IS_ERR(ent)) {
                DRM_ERROR("unable to create amdgpu_preempt_ib debugsfs file\n");
                return -EIO;
        }
 
        ent = debugfs_create_file("amdgpu_force_sclk", 0200, root, adev,
                                  &fops_sclk_set);
-       if (!ent) {
+       if (IS_ERR(ent)) {
                DRM_ERROR("unable to create amdgpu_set_sclk debugsfs file\n");
                return -EIO;
        }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 7b634a1517f9..f40753e1a60d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -428,7 +428,7 @@ int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
        ent = debugfs_create_file(name,
                                  S_IFREG | S_IRUGO, root,
                                  ring, &amdgpu_debugfs_ring_fops);
-       if (!ent)
+       if (IS_ERR(ent))
                return -ENOMEM;
 
        i_size_write(ent->d_inode, ring->ring_size + 12);
-- 
2.32.0

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