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usb/serial: Remove unnecessary check for console

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The tty port ops shutdown() routine is not called for console ports;
remove extra check.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2013-02-23 10:11:35 -05:00 committed by Greg Kroah-Hartman
parent f1bffc8ca6
commit 8a7298d361
1 changed files with 5 additions and 9 deletions
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14
drivers/usb/serial/usb-serial.c
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@ -256,22 +256,18 @@ static int serial_open(struct tty_struct *tty, struct file *filp)
* serial_down - shut down hardware
* @tport: tty port to shut down
*
* Shut down a USB serial port unless it is the console. We never
* shut down the console hardware as it will always be in use. Serialized
* against activate by the tport mutex and kept to matching open/close pairs
* Shut down a USB serial port. Serialized against activate by the
* tport mutex and kept to matching open/close pairs
* of calls by the ASYNCB_INITIALIZED flag.
*
* Not called if tty is console.
*/
static void serial_down(struct tty_port *tport)
{
struct usb_serial_port *port =
container_of(tport, struct usb_serial_port, port);
struct usb_serial_driver *drv = port->serial->type;
/*
* The console is magical. Do not hang up the console hardware
* or there will be tears.
*/
if (port->port.console)
return;
if (drv->close)
drv->close(port);
}