[U-Boot] [PATCH u-boot 3/3] arm: meson: null-terminate the serial number

[Beniamino Galvani]

Terminate the serial number variable with null to avoid printing
trailing garbage.

Signed-off-by: Beniamino Galvani <b.galvani at gmail.com>
---
 arch/arm/mach-meson/sm.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-meson/sm.c b/arch/arm/mach-meson/sm.c
index 2628591fe6..23eafe87b4 100644
--- a/arch/arm/mach-meson/sm.c
+++ b/arch/arm/mach-meson/sm.c
@@ -64,7 +64,7 @@ ssize_t meson_sm_read_efuse(uintptr_t offset, void *buffer, size_t size)
 void meson_init_env_from_efuse(void)
 {
 	static u8 mac[EFUSE_MAC_SIZE];
-	char serial[EFUSE_SN_SIZE];
+	char serial[EFUSE_SN_SIZE + 1];
 	ssize_t len;
 
 	if (!eth_env_get_enetaddr("ethaddr", mac)) {
@@ -77,7 +77,9 @@ void meson_init_env_from_efuse(void)
 	if (!env_get("serial#")) {
 		len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
 					  EFUSE_SN_SIZE);
-		if (len == EFUSE_SN_SIZE)
+		if (len == EFUSE_SN_SIZE) {
+			serial[EFUSE_SN_SIZE] = '\0';
 			env_set("serial#", serial);
+		}
 	}
 }
-- 
2.17.1