tty: pty: Add a blank line after declarations

Add a blank line after declarations, reported by checkpatch.pl.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Link: https://lore.kernel.org/r/1617351990-5189-1-git-send-email-tanxiaofei@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/pty.c

@@ -159,6 +159,7 @@ static int pty_chars_in_buffer(struct tty_struct *tty)
 static int pty_set_lock(struct tty_struct *tty, int __user *arg)
 {
 	int val;
+
 	if (get_user(val, arg))
 		return -EFAULT;
 	if (val)
@@ -171,6 +172,7 @@ static int pty_set_lock(struct tty_struct *tty, int __user *arg)
 static int pty_get_lock(struct tty_struct *tty, int __user *arg)
 {
 	int locked = test_bit(TTY_PTY_LOCK, &tty->flags);
+
 	return put_user(locked, arg);
 }
 
@@ -200,6 +202,7 @@ static int pty_set_pktmode(struct tty_struct *tty, int __user *arg)
 static int pty_get_pktmode(struct tty_struct *tty, int __user *arg)
 {
 	int pktmode = tty->packet;
+
 	return put_user(pktmode, arg);
 }
 
@@ -463,6 +466,7 @@ static int pty_install(struct tty_driver *driver, struct tty_struct *tty)
 static void pty_remove(struct tty_driver *driver, struct tty_struct *tty)
 {
 	struct tty_struct *pair = tty->link;
+
 	driver->ttys[tty->index] = NULL;
 	if (pair)
 		pair->driver->ttys[pair->index] = NULL;