[PATCH] lib: rsa: Add debug message on algo mismatch

[Sean Anderson]

Currently we fail silently if there is an algorithm mismatch. To help
distinguish this failure condition.

Signed-off-by: Sean Anderson <sean.anderson at seco.com>
---

 lib/rsa/rsa-verify.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index e34d3293d1..aee76f42d5 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -447,8 +447,11 @@ static int rsa_verify_with_keynode(struct image_sign_info *info,
 	}
 
 	algo = fdt_getprop(blob, node, "algo", NULL);
-	if (strcmp(info->name, algo))
+	if (strcmp(info->name, algo)) {
+		debug("%s: Wrong algo: have %s, expected %s", __func__,
+		      info->name, algo);
 		return -EFAULT;
+	}
 
 	prop.num_bits = fdtdec_get_int(blob, node, "rsa,num-bits", 0);
 
-- 
2.25.1