… > +++ b/drivers/gpu/drm/loongson/loongson_drv.h > @@ -0,0 +1,108 @@ … > +#ifndef __LOONGSON_DRV_H__ > +#define __LOONGSON_DRV_H__ … I suggest to omit leading underscores from such identifiers. https://wiki.sei.cmu.edu/confluence/display/c/DCL37-C.+Do+not+declare+or+define+a+reserved+identifier Regards, Markus