drm: add DRM_INFO_ONCE() to print a one-time DRM_INFO() message

Just like DRM_INFO(), but only do it once.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 04086c5be930e2941f8be91cb0a47107da73ad08..04a7f31301f8fda61ab05cf42a3bea5c28431178 100644 (file)
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -199,6 +199,9 @@ int drm_err(const char *func, const char *format, ...);
 #define DRM_INFO(fmt, ...)                             \
        printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
 
+#define DRM_INFO_ONCE(fmt, ...)                                \
+       printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
+
 /**
  * Debug output.
  *