[PATCH 3/6] drm/debugfs: Create wrapper to add files to debugfs list

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Create a helper to encapsulate the code that adds a new debugfs file to
a linked list related to a object. Moreover, the helper also provides
more flexibily, as the parameter is a struct drm_debugfs_list.

Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
---
 drivers/gpu/drm/drm_debugfs.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 176b0f8614e5..aca460fa5d23 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -229,6 +229,13 @@ void drm_debugfs_list_destroy(struct drm_debugfs_list *debugfs_list)
 	mutex_destroy(&debugfs_list->mutex);
 }
 
+static void drm_debugfs_list_add(struct list_head *entry, struct drm_debugfs_list *debugfs_list)
+{
+	mutex_lock(&debugfs_list->mutex);
+	list_add(entry, &debugfs_list->list);
+	mutex_unlock(&debugfs_list->mutex);
+}
+
 int drm_debugfs_init(struct drm_minor *minor, int minor_id,
 		     struct dentry *root)
 {
@@ -350,9 +357,7 @@ void drm_debugfs_add_file(struct drm_device *dev, const char *name,
 	entry->file.data = data;
 	entry->dev = dev;
 
-	mutex_lock(&dev->debugfs_list.mutex);
-	list_add(&entry->list, &dev->debugfs_list.list);
-	mutex_unlock(&dev->debugfs_list.mutex);
+	drm_debugfs_list_add(&entry->list, &dev->debugfs_list);
 }
 EXPORT_SYMBOL(drm_debugfs_add_file);
 
-- 
2.39.0




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