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>
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 4753c00..5f6b1ff 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -408,7 +408,7 @@
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 @@
default:
if (port->serial->type->ioctl)
retval = port->serial->type->ioctl(tty, cmd, arg);
- else
- retval = -ENOIOCTLCMD;
}
return retval;