drm/i915: fix return value check of debugfs_create_file()

In case of error, the function debugfs_create_file() returns NULL
pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in
the return value check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 6badc15..242189e 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2117,8 +2117,8 @@ static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
        info->dev = dev;
        ent = debugfs_create_file(info->name, S_IRUGO, root, info,
                                  &i915_pipe_crc_fops);
-       if (IS_ERR(ent))
-               return PTR_ERR(ent);
+       if (!ent)
+               return -ENOMEM;
 
        return drm_add_fake_info_node(minor, ent, info);
 }
@@ -3133,8 +3133,8 @@ static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
                                  S_IRUSR,
                                  root, dev,
                                  &i915_forcewake_fops);
-       if (IS_ERR(ent))
-               return PTR_ERR(ent);
+       if (!ent)
+               return -ENOMEM;
 
        return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
 }
@@ -3151,8 +3151,8 @@ static int i915_debugfs_create(struct dentry *root,
                                  S_IRUGO | S_IWUSR,
                                  root, dev,
                                  fops);
-       if (IS_ERR(ent))
-               return PTR_ERR(ent);
+       if (!ent)
+               return -ENOMEM;
 
        return drm_add_fake_info_node(minor, ent, fops);
 }