[PATCH 2/2] common: elf: use memcmp for fixed-size comparison

[Ahmad Fatoum <a.fatoum@barebox.org>]

strncmp would only make sense if it were taking the size of buf as
argument, but it's taking the size of ELFMAG instead, which is a fixed 4
bytes. It's thus effectively equal to memcmp, so switch to using that
instead.

Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
 common/elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/elf.c b/common/elf.c
index e8126c9b64e7..18c541bf827e 100644
--- a/common/elf.c
+++ b/common/elf.c
@@ -201,7 +201,7 @@ static int load_elf_image_segments(struct elf_image *elf)
 
 static int elf_check_image(struct elf_image *elf, void *buf)
 {
-	if (strncmp(buf, ELFMAG, SELFMAG)) {
+	if (memcmp(buf, ELFMAG, SELFMAG)) {
 		pr_err("ELF magic not found.\n");
 		return -EINVAL;
 	}
-- 
2.47.3