From f3790b90e5ecf44525dc05f05a4e72f74baea411 Mon Sep 17 00:00:00 2001
From: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Date: Fri, 17 Apr 2020 17:43:09 +0200
Subject: [PATCH] command.c: Simplify usage of serial_no serial number string.

---
 src/command.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/command.c b/src/command.c
index 372b8e95..12a5e4ad 100644
--- a/src/command.c
+++ b/src/command.c
@@ -357,11 +357,7 @@ static bool cmd_target_power(target *t, int argc, const char **argv)
 #ifdef PLATFORM_HAS_TRACESWO
 static bool cmd_traceswo(target *t, int argc, const char **argv)
 {
-#if defined(STM32L0) || defined(STM32F3) || defined(STM32F4)
-	extern char serial_no[13];
-#else
-	extern char serial_no[9];
-#endif
+	extern char *serial_no;
 	(void)t;
 #if TRACESWO_PROTOCOL == 2
 	uint32_t baudrate = SWO_DEFAULT_BAUD;