[V9,1/4] USB: serial: f81232: fix interrupt worker not stop

[Johan Hovold <johan@kernel.org>]

On Tue, Apr 30, 2019 at 09:22:29AM +0800, Ji-Ze Hong (Peter Hong) wrote:
> The F81232 will use interrupt worker to handle MSR change.
> This patch will fix the issue that interrupt work should stop
> in close() and suspend().
>
> Cc: Johan Hovold <johan@kernel.org>
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>

> +static int f81232_resume(struct usb_serial *serial)
> +{
> +	struct usb_serial_port *port = serial->port[0];
> +	int result;
> +
> +	if (tty_port_initialized(&port->port)) {
> +		result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
> +		if (result) {
> +			dev_err(&port->dev, "submit interrupt urb failed: %d",
> +					result);

I added the missing '\n' to the error message.

> +			return result;
> +		}
> +	}
> +
> +	return usb_serial_generic_resume(serial);
> +}

This also fixes the issue with interrupt events not being received
after a suspend cycle, so I added that to the commit message.

Johan