[PATCH] drm: add missing header guards to drm_crtc_internal.h

[Jani Nikula <jani.nikula@xxxxxxxxx>]

Including the file twice can lead to errors.

Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 drivers/gpu/drm/drm_crtc_internal.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index c0c5d79ed4c9..0c693229a1c9 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -32,6 +32,9 @@
  * and are not exported to drivers.
  */
 
+#ifndef __DRM_CRTC_INTERNAL_H__
+#define __DRM_CRTC_INTERNAL_H__
+
 #include <linux/err.h>
 #include <linux/types.h>
 
@@ -305,3 +308,5 @@ drm_edid_load_firmware(struct drm_connector *connector)
 	return ERR_PTR(-ENOENT);
 }
 #endif
+
+#endif /* __DRM_CRTC_INTERNAL_H__ */
-- 
2.39.2