1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index b9631e3a1ea6..89050684fe0d 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -51,7 +51,22 @@ struct idr drm_minors_idr;
 struct class *drm_class;
 struct proc_dir_entry *drm_proc_root;
 struct dentry *drm_debugfs_root;
-
+void drm_ut_debug_printk(unsigned int request_level,
+                         const char *prefix,
+                         const char *function_name,
+                         const char *format, ...)
+{
+        va_list args;
+
+        if (drm_debug & request_level) {
+                if (function_name)
+                        printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
+                va_start(args, format);
+                vprintk(format, args);
+                va_end(args);
+        }
+}
+EXPORT_SYMBOL(drm_ut_debug_printk);
 static int drm_minor_get_id(struct drm_device *dev, int type)
 {
         int new_id;