On Mon, 16 Jan 2012 10:46:52 -0800
Greg KH <gregkh@xxxxxxx> wrote:
> On Mon, Jan 16, 2012 at 10:37:24AM -0800, Stephen Hemminger wrote:
> > When using USB serial console, there is an infinite loop on shutdown.
> > The console fills with the error message:
> > ttyUSB0 - error submitting urb: -22
> >
> > It seems that writing the error message is causing the error, which
> > cause the message, which causes the error, ...
> > The following is needed to avoid the infinite loop.
>
> Ick.
>
> > Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxx>
> >
> > --- a/drivers/usb/serial/generic.c 2012-01-10 10:56:58.667176726 -0800
> > +++ b/drivers/usb/serial/generic.c 2012-01-16 09:37:26.754919670 -0800
> > @@ -217,8 +217,6 @@ retry:
> > clear_bit(i, &port->write_urbs_free);
> > result = usb_submit_urb(urb, GFP_ATOMIC);
> > if (result) {
> > - dev_err(&port->dev, "%s - error submitting urb: %d\n",
> > - __func__, result);
>
> How about we switch this to dev_dbg()? "Normal" users will never see
> this then. Will that work for you?
>
> thanks,
>
> greg k-h
That works as well.
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