1 files changed, 26 insertions, 20 deletions

diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index b4ba2b1dab76..baeeeaec3f03 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -8,6 +8,9 @@
  *
  * 2007-2008 (c) Jason Wessel - Wind River Systems, Inc.
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/ctype.h>
 #include <linux/kgdb.h>
@@ -128,19 +131,6 @@ static void kgdboc_unregister_kbd(void)
 #define kgdboc_restore_input()
 #endif /* ! CONFIG_KDB_KEYBOARD */
 
-static int kgdboc_option_setup(char *opt)
-{
-	if (strlen(opt) >= MAX_CONFIG_LEN) {
-		printk(KERN_ERR "kgdboc: config string too long\n");
-		return -ENOSPC;
-	}
-	strcpy(config, opt);
-
-	return 0;
-}
-
-__setup("kgdboc=", kgdboc_option_setup);
-
 static void cleanup_kgdboc(void)
 {
 	if (kgdb_unregister_nmi_console())
@@ -154,15 +144,13 @@ static int configure_kgdboc(void)
 {
 	struct tty_driver *p;
 	int tty_line = 0;
-	int err;
+	int err = -ENODEV;
 	char *cptr = config;
 	struct console *cons;
 
-	err = kgdboc_option_setup(config);
-	if (err || !strlen(config) || isspace(config[0]))
+	if (!strlen(config) || isspace(config[0]))
 		goto noconfig;
 
-	err = -ENODEV;
 	kgdboc_io_ops.is_console = 0;
 	kgdb_tty_driver = NULL;
 
@@ -248,7 +236,7 @@ static int param_set_kgdboc_var(const char *kmessage,
 	int len = strlen(kmessage);
 
 	if (len >= MAX_CONFIG_LEN) {
-		printk(KERN_ERR "kgdboc: config string too long\n");
+		pr_err("config string too long\n");
 		return -ENOSPC;
 	}
 
@@ -259,8 +247,7 @@ static int param_set_kgdboc_var(const char *kmessage,
 	}
 
 	if (kgdb_connected) {
-		printk(KERN_ERR
-		       "kgdboc: Cannot reconfigure while KGDB is connected.\n");
+		pr_err("Cannot reconfigure while KGDB is connected.\n");
 
 		return -EBUSY;
 	}
@@ -311,6 +298,25 @@ static struct kgdb_io kgdboc_io_ops = {
 };
 
 #ifdef CONFIG_KGDB_SERIAL_CONSOLE
+static int kgdboc_option_setup(char *opt)
+{
+	if (!opt) {
+		pr_err("config string not provided\n");
+		return -EINVAL;
+	}
+
+	if (strlen(opt) >= MAX_CONFIG_LEN) {
+		pr_err("config string too long\n");
+		return -ENOSPC;
+	}
+	strcpy(config, opt);
+
+	return 0;
+}
+
+__setup("kgdboc=", kgdboc_option_setup);
+
+
 /* This is only available if kgdboc is a built in for early debugging */
 static int __init kgdboc_early_init(char *opt)
 {