From: Johan Hovold Date: Thu, 21 Mar 2013 11:37:47 +0000 (+0100) Subject: USB: visor: always disable uart on close X-Git-Tag: upstream/snapshot3+hdmi~5288^2~119 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7620c33afb643451e1cbdc7fa666842440f8af63;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git USB: visor: 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/visor.c b/drivers/usb/serial/visor.c index 1129aa7..7573ec8 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -257,24 +257,18 @@ static void visor_close(struct usb_serial_port *port) { unsigned char *transfer_buffer; - /* shutdown our urbs */ usb_serial_generic_close(port); usb_kill_urb(port->interrupt_in_urb); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* Try to send shutdown message, unless the device is gone */ - transfer_buffer = kmalloc(0x12, GFP_KERNEL); - if (transfer_buffer) { - usb_control_msg(port->serial->dev, + transfer_buffer = kmalloc(0x12, GFP_KERNEL); + if (!transfer_buffer) + return; + usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), VISOR_CLOSE_NOTIFICATION, 0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300); - kfree(transfer_buffer); - } - } - mutex_unlock(&port->serial->disc_mutex); + kfree(transfer_buffer); } static void visor_read_int_callback(struct urb *urb)