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

Beniamino Galvani
2018-08-14T13:07:54Z

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

Signed-off-by: Beniamino Galvani <b.galvani@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