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Commit c18d77aa authored by Jiri Slaby's avatar Jiri Slaby Committed by Greg Kroah-Hartman
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TTY: unify pty_unix98_install fail path handling 



Change it so that we call the deinit functions at one place at the end
of the function (by gotos). And while at it use some sane label names.

This is a preparation for the deinitialization of tty in the next
patch.

Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8a1b8d70

drivers/tty/pty.c

+6 −6
Original line number Diff line number Diff line
@@ -560,20 +560,19 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty) 
		return -ENOMEM;

	if (!try_module_get(driver->other->owner)) {

		/* This cannot in fact currently happen */

		free_tty_struct(o_tty);

		return -ENOMEM;

		goto err_free_tty;

	}

	initialize_tty_struct(o_tty, driver->other, idx);



	tty->termios = kzalloc(sizeof(struct ktermios[2]), GFP_KERNEL);

	if (tty->termios == NULL)

		goto free_mem_out;

		goto err_free_mem;

	*tty->termios = driver->init_termios;

	tty->termios_locked = tty->termios + 1;



	o_tty->termios = kzalloc(sizeof(struct ktermios[2]), GFP_KERNEL);

	if (o_tty->termios == NULL)

		goto free_mem_out;

		goto err_free_mem;

	*o_tty->termios = driver->other->init_termios;

	o_tty->termios_locked = o_tty->termios + 1;
@@ -592,11 +591,12 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty) 
	tty->count++;

	pty_count++;

	return 0;

free_mem_out:

err_free_mem:

	kfree(o_tty->termios);

	kfree(tty->termios);

	module_put(o_tty->driver->owner);

err_free_tty:

	free_tty_struct(o_tty);

	kfree(tty->termios);

	return -ENOMEM;

}