From: Johan Hovold Date: Thu, 21 Mar 2013 11:37:41 +0000 (+0100) Subject: USB: mos7720: always disable uart on close X-Git-Tag: firefly_0821_release~3680^2~672^2~125 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cf41aa9e19052d467b54786090e1d3ba9104e394;p=firefly-linux-kernel-4.4.55.git USB: mos7720: always disable uart on close Always try to disable the uart on close. Since the switch to tty ports, close will be called as part of shutdown before disconnect returns. Hence there is no need to check the disconnected flag, and we can put devices in disabled states also on driver unbind. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index d1e2bf30bff8..fc506bb71315 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1140,16 +1140,9 @@ static void mos7720_close(struct usb_serial_port *port) usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); - mutex_lock(&serial->disc_mutex); - /* these commands must not be issued if the device has - * been disconnected */ - if (!serial->disconnected) { - write_mos_reg(serial, port->number - port->serial->minor, - MCR, 0x00); - write_mos_reg(serial, port->number - port->serial->minor, - IER, 0x00); - } - mutex_unlock(&serial->disc_mutex); + write_mos_reg(serial, port->number - port->serial->minor, MCR, 0x00); + write_mos_reg(serial, port->number - port->serial->minor, IER, 0x00); + mos7720_port->open = 0; }