linux-kernel - Re: PROBLEM: USB ACM device does not work

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Message-Id: <200907011337.48901.oliver@neukum.org>
Date:	Wed, 1 Jul 2009 13:37:48 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Arseniy Lartsev <ars3n@...dex.ru>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	USB list <linux-usb@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: PROBLEM: USB ACM device does not work

Am Mittwoch, 1. Juli 2009 13:24:55 schrieb Arseniy Lartsev:
> On Wednesday 01 July 2009 14:56:46 Oliver Neukum wrote:
> > > +		ep = (usb_pipein(acm->rx_endpoint) ? acm->dev->ep_in :
> > > acm->dev->ep_out) +				[usb_pipeendpoint(acm->rx_endpoint)];
> > > +		if (usb_endpoint_xfer_int(&ep->desc))
> > > +			usb_fill_int_urb(rcv->urb, acm->dev,
> > > +					 acm->rx_endpoint,
> > > +					 buf->base,
> > > +					 acm->readsize,
> > > +					 acm_read_bulk, rcv, 0xff);
> >
> > The patch is good except for this.
> > We should make sure this interval matches usbcore's value.
> > Would you care to redo it with that change?
>
> Am I right that 0xff here should be changed to ep->desc.bInterval (and to
> epwrite->bInterval in the other call to usb_fill_int_urb)?

Yes, exactly. Please add greg@...ah.com into CC, add a Signed-off-by line
and resend.

	Regards
		Oliver

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