log: Make pr_err_once to use pr_err

No need for core duplication.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/log.h

@@ -31,22 +31,20 @@ extern void print_on_level(unsigned int loglevel, const char *format, ...)
 	print_on_level(LOG_INFO,						\
 		       LOG_PREFIX fmt, ##__VA_ARGS__)
 
+#define pr_err(fmt, ...)							\
+	print_on_level(LOG_ERROR,						\
+		       "Error (%s:%d): " LOG_PREFIX fmt,			\
+		       __FILE__, __LINE__, ##__VA_ARGS__)
+
 #define pr_err_once(fmt, ...)							\
 	do {									\
 		static bool __printed;						\
 		if (!__printed) {						\
-			print_on_level(LOG_ERROR,				\
-				       "Error (%s:%d): " LOG_PREFIX fmt,	\
-				       __FILE__, __LINE__, ##__VA_ARGS__);	\
+			pr_err(fmt, ##__VA_ARGS__);				\
 			__printed = 1;						\
 		}								\
 	} while (0)
 
-#define pr_err(fmt, ...)							\
-	print_on_level(LOG_ERROR,						\
-		       "Error (%s:%d): " LOG_PREFIX fmt,			\
-		       __FILE__, __LINE__, ##__VA_ARGS__)
-
 #define pr_warn(fmt, ...)							\
 	print_on_level(LOG_WARN,						\
 		       "Warn  (%s:%d): " LOG_PREFIX fmt,			\