linux-kernel - [PATCH AUTOSEL 5.6 019/606] bootconfig: Fix to prevent warning message if no bootconfig option

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Message-Id: <20200608231211.3363633-19-sashal@kernel.org>
Date:   Mon,  8 Jun 2020 19:02:24 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Paul Menzel <pmenzel@...gen.mpg.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH AUTOSEL 5.6 019/606] bootconfig: Fix to prevent warning message if no bootconfig option

From: Masami Hiramatsu <mhiramat@...nel.org>

commit 611d0a95d46b0977a530b4d538948c69d447b001 upstream.

Commit de462e5f1071 ("bootconfig: Fix to remove bootconfig
data from initrd while boot") causes a cosmetic regression
on dmesg, which warns "no bootconfig data" message without
bootconfig cmdline option.

Fix setup_boot_config() by moving no bootconfig check after
commandline option check.

Link: http://lkml.kernel.org/r/9b1ba335-071d-c983-89a4-2677b522dcc8@molgen.mpg.de
Link: http://lkml.kernel.org/r/158916116468.21787.14558782332170588206.stgit@devnote2

Fixes: de462e5f1071 ("bootconfig: Fix to remove bootconfig data from initrd while boot")
Reported-by: Paul Menzel <pmenzel@...gen.mpg.de>
Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>
Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 init/main.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/init/main.c b/init/main.c
index ee0345e7e9f1..8ee04f875b21 100644
--- a/init/main.c
+++ b/init/main.c
@@ -398,9 +398,8 @@ static void __init setup_boot_config(const char *cmdline)
 	char *data, *copy;
 	int ret;
 
+	/* Cut out the bootconfig data even if we have no bootconfig option */
 	data = get_boot_config_from_initrd(&size, &csum);
-	if (!data)
-		goto not_found;
 
 	strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
 	parse_args("bootconfig", tmp_cmdline, NULL, 0, 0, 0, NULL,
@@ -409,6 +408,11 @@ static void __init setup_boot_config(const char *cmdline)
 	if (!bootconfig_found)
 		return;
 
+	if (!data) {
+		pr_err("'bootconfig' found on command line, but no bootconfig found\n");
+		return;
+	}
+
 	if (size >= XBC_DATA_MAX) {
 		pr_err("bootconfig size %d greater than max size %d\n",
 			size, XBC_DATA_MAX);
@@ -440,8 +444,6 @@ static void __init setup_boot_config(const char *cmdline)
 		extra_init_args = xbc_make_cmdline("init");
 	}
 	return;
-not_found:
-	pr_err("'bootconfig' found on command line, but no bootconfig found\n");
 }
 
 #else
-- 
2.25.1