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USB: serial: fix TIOCMIWAIT return value 

Fix regression introduced by commit 143d9d9616 ("USB: serial: add
tiocmiwait subdriver operation") which made the ioctl operation return
ENODEV rather than ENOIOCTLCMD when a subdriver TIOCMIWAIT
implementation is missing.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-06-05 12:21:11 +02:00 committed by Greg Kroah-Hartman
parent a26f009a07
commit f4488035ab
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/serial/usb-serial.c
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@ -408,7 +408,7 @@ static int serial_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
int retval = -ENODEV;
int retval = -ENOIOCTLCMD;
dev_dbg(tty->dev, "%s - cmd 0x%.4x\n", __func__, cmd);
@ -420,8 +420,6 @@ static int serial_ioctl(struct tty_struct *tty,
default:
if (port->serial->type->ioctl)
retval = port->serial->type->ioctl(tty, cmd, arg);
else
retval = -ENOIOCTLCMD;
}
return retval;