staging: dgnc: preserve return code

Return code from tty_check_change() should be being
preserved.

Preserve return code from call to tty_check_change().

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tobin C. Harding 2017-03-15 10:44:29 +11:00 committed by Greg Kroah-Hartman
parent 9280b3a61c
commit f15e60ce4e

View File

@ -2394,7 +2394,7 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
rc = tty_check_change(tty);
spin_unlock_irqrestore(&ch->ch_lock, flags);
if (rc)
return -ENODEV;
return rc;
rc = ch_bd_ops->drain(tty, 0);
if (rc)
@ -2419,7 +2419,7 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
rc = tty_check_change(tty);
spin_unlock_irqrestore(&ch->ch_lock, flags);
if (rc)
return -ENODEV;
return rc;
rc = ch_bd_ops->drain(tty, 0);
if (rc)
@ -2437,7 +2437,7 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
rc = tty_check_change(tty);
spin_unlock_irqrestore(&ch->ch_lock, flags);
if (rc)
return -ENODEV;
return rc;
rc = ch_bd_ops->drain(tty, 0);
if (rc)