linux-kernel - [RESEND PATCH] tools/bootconfig: Fix a compilation issue with missing variable

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Message-Id: <20210907230710.1189193-1-punitagrawal@gmail.com>
Date:   Wed,  8 Sep 2021 08:07:10 +0900
From:   Punit Agrawal <punitagrawal@...il.com>
To:     mhiramat@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Punit Agrawal <punitagrawal@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [RESEND PATCH] tools/bootconfig: Fix a compilation issue with missing variable

While looking to build bootconfig tool in order to debug a kernel boot
time issue I noticed that tool fails to compile. The broken changes
were introduced by commit e5efaeb8a8f5 ("bootconfig: Support mixing a
value and subkeys under a key").

Fix the compile issue by introducing a "ret" variable to track the
return value from xbc_node_compose_key().

Fixes: e5efaeb8a8f5 ("bootconfig: Support mixing a value and subkeys under a key")
Signed-off-by: Punit Agrawal <punitagrawal@...il.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
---

(Apologies for the resend. I fat-fingered the email address for lkml)

Hi Masami,

I am not sure what went wrong but the patch in the lore link[0]
doesn't match the end result (bad merge?). You may want to recheck the
other changes to make sure it all looks sane.

Regards,
Punit

[0] https://lkml.kernel.org/r/162262194685.264090.7738574774030567419.stgit@devnote2
---
 tools/bootconfig/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index f45fa992e01d..fd67496a947f 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -111,9 +111,11 @@ static void xbc_show_list(void)
 	char key[XBC_KEYLEN_MAX];
 	struct xbc_node *leaf;
 	const char *val;
+	int ret;

 	xbc_for_each_key_value(leaf, val) {
-		if (xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX) < 0) {
+		ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX);
+		if (ret < 0) {
 			fprintf(stderr, "Failed to compose key %d\n", ret);
 			break;
 		}
-- 
2.32.0