1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index baeeeaec3f03..6fb312e7af71 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -233,7 +233,7 @@ static void kgdboc_put_char(u8 chr)
 static int param_set_kgdboc_var(const char *kmessage,
                                 const struct kernel_param *kp)
 {
-        int len = strlen(kmessage);
+        size_t len = strlen(kmessage);
 
         if (len >= MAX_CONFIG_LEN) {
                 pr_err("config string too long\n");
@@ -254,7 +254,7 @@ static int param_set_kgdboc_var(const char *kmessage,
 
         strcpy(config, kmessage);
         /* Chop out \n char as a result of echo */
-        if (config[len - 1] == '\n')
+        if (len && config[len - 1] == '\n')
                 config[len - 1] = '\0';
 
         if (configured == 1)