drm/amd/display: Add dm_logger_append_va API

Same as dm_logger_append, except it takes a va_list instead of a
variable number of arguments. dm_logger_append is now a minimal wrapper
around dm_logger_append_va.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/basics/logger.c

@@ -311,6 +311,18 @@ void dm_logger_append(
 	struct log_entry *entry,
 	const char *msg,
 	...)
+{
+	va_list args;
+
+	va_start(args, msg);
+	dm_logger_append_va(entry, msg, args);
+	va_end(args);
+}
+
+void dm_logger_append_va(
+	struct log_entry *entry,
+	const char *msg,
+	va_list args)
 {
 	struct dal_logger *logger;
 
@@ -325,11 +337,8 @@ void dm_logger_append(
 		dal_logger_should_log(logger, entry->type)) {
 
 		uint32_t size;
-		va_list args;
 		char buffer[LOG_MAX_LINE_SIZE];
 
-		va_start(args, msg);
-
 		size = dm_log_to_buffer(
 			buffer, LOG_MAX_LINE_SIZE, msg, args);
 
@@ -338,8 +347,6 @@ void dm_logger_append(
 		} else {
 			append_entry(entry, "LOG_ERROR, line too long\n", 27);
 		}
-
-		va_end(args);
 	}
 }
 

drivers/gpu/drm/amd/display/include/logger_interface.h

@@ -57,6 +57,11 @@ void dm_logger_append(
 		const char *msg,
 		...);
 
+void dm_logger_append_va(
+		struct log_entry *entry,
+		const char *msg,
+		va_list args);
+
 void dm_logger_open(
 		struct dal_logger *logger,
 		struct log_entry *entry,