diff options
Diffstat (limited to 'drivers/tty/n_tty.c')
| -rw-r--r-- | drivers/tty/n_tty.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 8c0b7b42319c..f27289d910b2 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1561,14 +1561,10 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) static void n_tty_close(struct tty_struct *tty) { n_tty_flush_buffer(tty); - if (tty->read_buf) { - kfree(tty->read_buf); - tty->read_buf = NULL; - } - if (tty->echo_buf) { - kfree(tty->echo_buf); - tty->echo_buf = NULL; - } + kfree(tty->read_buf); + kfree(tty->echo_buf); + tty->read_buf = NULL; + tty->echo_buf = NULL; } /** @@ -1587,17 +1583,11 @@ static int n_tty_open(struct tty_struct *tty) return -EINVAL; /* These are ugly. Currently a malloc failure here can panic */ - if (!tty->read_buf) { - tty->read_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL); - if (!tty->read_buf) - return -ENOMEM; - } - if (!tty->echo_buf) { - tty->echo_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL); + tty->read_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL); + tty->echo_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL); + if (!tty->read_buf || !tty->echo_buf) + goto err_free_bufs; - if (!tty->echo_buf) - return -ENOMEM; - } reset_buffer_flags(tty); tty_unthrottle(tty); tty->column = 0; @@ -1605,6 +1595,11 @@ static int n_tty_open(struct tty_struct *tty) tty->minimum_to_wake = 1; tty->closing = 0; return 0; +err_free_bufs: + kfree(tty->read_buf); + kfree(tty->echo_buf); + + return -ENOMEM; } static inline int input_available_p(struct tty_struct *tty, int amt) |