From d6658eb062e55f426236c65121c8e958884124fb Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Wed, 22 Apr 2026 03:15:41 +0100
Subject: util/nvmutil: fix errno zero on exit return

Signed-off-by: Leah Rowe <leah@libreboot.org>
---
 util/nvmutil/nvmutil.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index c1f1389b..e76fbc47 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -433,8 +433,10 @@ cmd_copy(void)
 
 void
 cmd_swap(void) {
-	err_if(!(goodChecksum(0) || goodChecksum(1)));
-	errno = 0;
+	if(!(goodChecksum(0) || goodChecksum(1))) {
+		errno = EINVAL;
+		err(EXIT_FAILURE, "Invalid checksums");
+	}
 
 	gbe[0] ^= gbe[1];
 	gbe[1] ^= gbe[0];
-- 
cgit v1.2.1