TTY: unify pty_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: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index 2107747..f511918 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -295,8 +295,8 @@
return -ENOMEM;
if (!try_module_get(driver->other->owner)) {
/* This cannot in fact currently happen */
- free_tty_struct(o_tty);
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto err_free_tty;
}
initialize_tty_struct(o_tty, driver->other, idx);
@@ -304,13 +304,11 @@
the easy way .. */
retval = tty_init_termios(tty);
if (retval)
- goto free_mem_out;
+ goto err_module_put;
retval = tty_init_termios(o_tty);
- if (retval) {
- tty_free_termios(tty);
- goto free_mem_out;
- }
+ if (retval)
+ goto err_free_termios;
/*
* Everything allocated ... set up the o_tty structure.
@@ -327,10 +325,13 @@
tty->count++;
driver->ttys[idx] = tty;
return 0;
-free_mem_out:
+err_free_termios:
+ tty_free_termios(tty);
+err_module_put:
module_put(o_tty->driver->owner);
+err_free_tty:
free_tty_struct(o_tty);
- return -ENOMEM;
+ return retval;
}
static int pty_bsd_ioctl(struct tty_struct *tty,