linux-kernel - [PATCH 4.14 025/126] sysrq: Remove duplicated sysrq message

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Date:   Tue, 10 Mar 2020 13:40:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Tommi Rantala <tommi.t.rantala@...ia.com>
Subject: [PATCH 4.14 025/126] sysrq: Remove duplicated sysrq message

From: Petr Mladek <pmladek@...e.com>

commit c3fee60908db4a8594f2e4a2131998384b8fa006 upstream.

The commit 97f5f0cd8cd0a0544 ("Input: implement SysRq as a separate input
handler") added pr_fmt() definition. It caused a duplicated message
prefix in the sysrq header messages, for example:

[  177.053931] sysrq: SysRq : Show backtrace of all active CPUs
[  742.864776] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash(c)

Fixes: 97f5f0cd8cd0a05 ("Input: implement SysRq as a separate input handler")
Signed-off-by: Petr Mladek <pmladek@...e.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc: Tommi Rantala  <tommi.t.rantala@...ia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/tty/sysrq.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -546,7 +546,6 @@ void __handle_sysrq(int key, bool check_
 	 */
 	orig_log_level = console_loglevel;
 	console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
-	pr_info("SysRq : ");
 
         op_p = __sysrq_get_key_op(key);
         if (op_p) {
@@ -555,15 +554,15 @@ void __handle_sysrq(int key, bool check_
 		 * should not) and is the invoked operation enabled?
 		 */
 		if (!check_mask || sysrq_on_mask(op_p->enable_mask)) {
-			pr_cont("%s\n", op_p->action_msg);
+			pr_info("%s\n", op_p->action_msg);
 			console_loglevel = orig_log_level;
 			op_p->handler(key);
 		} else {
-			pr_cont("This sysrq operation is disabled.\n");
+			pr_info("This sysrq operation is disabled.\n");
 			console_loglevel = orig_log_level;
 		}
 	} else {
-		pr_cont("HELP : ");
+		pr_info("HELP : ");
 		/* Only print the help msg once per handler */
 		for (i = 0; i < ARRAY_SIZE(sysrq_key_table); i++) {
 			if (sysrq_key_table[i]) {