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USB: mos7840: remove bogus disconnect test in close 

Remove bogus (and unnecessary) test for serial->dev being NULL in close.

The device is never cleared, and close is never called after a completed
disconnect anyway.

Simplify urb killing, and remove some related debug and dead code while
at it.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-21 12:36:35 +01:00 committed by Greg Kroah-Hartman
parent 75d22b323f
commit bb3529c6a0
1 changed files with 6 additions and 22 deletions
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28
drivers/usb/serial/mos7840.c
View File

@ -1223,25 +1223,10 @@ static void mos7840_close(struct usb_serial_port *port)
}
}
/* While closing port, shutdown all bulk read, write *
* and interrupt read if they exists */
if (serial->dev) {
if (mos7840_port->write_urb) {
dev_dbg(&port->dev, "%s", "Shutdown bulk write\n");
usb_kill_urb(mos7840_port->write_urb);
}
if (mos7840_port->read_urb) {
dev_dbg(&port->dev, "%s", "Shutdown bulk read\n");
usb_kill_urb(mos7840_port->read_urb);
mos7840_port->read_urb_busy = false;
}
if ((&mos7840_port->control_urb)) {
dev_dbg(&port->dev, "%s", "Shutdown control read\n");
/*/ usb_kill_urb (mos7840_port->control_urb); */
}
}
/* if(mos7840_port->ctrl_buf != NULL) */
/* kfree(mos7840_port->ctrl_buf); */
usb_kill_urb(mos7840_port->write_urb);
usb_kill_urb(mos7840_port->read_urb);
mos7840_port->read_urb_busy = false;
port0->open_ports--;
dev_dbg(&port->dev, "%s in close%d:in port%d\n", __func__, port0->open_ports, port->number);
if (port0->open_ports == 0) {
@ -1330,9 +1315,8 @@ static void mos7840_break(struct tty_struct *tty, int break_state)
if (mos7840_port == NULL)
return;
if (serial->dev)
/* flush and block until tx is empty */
mos7840_block_until_chase_response(tty, mos7840_port);
/* flush and block until tx is empty */
mos7840_block_until_chase_response(tty, mos7840_port);
if (break_state == -1)
data = mos7840_port->shadowLCR | LCR_SET_BREAK;