On Tue, Jan 21, 2014 at 01:21:51PM +0800, Peter Chen wrote:
> On Mon, Jan 20, 2014 at 09:13:11AM +0800, Peter Chen wrote:
> > The idea of this message is: the non-ep0 should not use ctrl
> > transfer. But it does not cover the ep0in which uses ctrl
> > transfer too.
> >
> > This commit deletes the warning message at interrupt handler,
> > and adds judgement at ep_enable, if non-ep0 requests ctrl transfer,
> > it will indicate an error.
> >
> > Reported-by: Michael Grzeschik <m...@pengutronix.de>
> > Signed-off-by: Peter Chen <peter.c...@freescale.com>
> > ---
> > drivers/usb/chipidea/udc.c | 10 +++++-----
> > 1 files changed, 5 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> > index 09366b4..646d958 100644
> > --- a/drivers/usb/chipidea/udc.c
> > +++ b/drivers/usb/chipidea/udc.c
> > @@ -1001,11 +1001,6 @@ __acquires(ci->lock)
> > !hw_test_and_clear_setup_status(ci, i))
> > continue;
> >
> > - if (i != 0) {
> > - dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i);
> > - continue;
> > - }
> > -
> > /*
> > * Flush data and handshake transactions of previous
> > * setup packet.
> > @@ -1201,6 +1196,11 @@ static int ep_enable(struct usb_ep *ep,
> > retval |= hw_ep_enable(hwep->ci, hwep->num, hwep->dir,
> > hwep->type);
> >
> > + if (hwep->num != 0 && hwep->type == USB_ENDPOINT_XFER_CONTROL) {
> > + dev_err(hwep->ci->dev, "Set control xfer at non-ep0\n");
> > + retval = -EINVAL;
> > + }
> > +
> > spin_unlock_irqrestore(hwep->lock, flags);
> > return retval;
> > }
> > --
> > 1.7.8
> >
> >
>
> Michael, this patch may not fix your problem totally, as a temp solution,
> you can use the matthieu's patch at your email thread.
Yes, I have seen it. But for this patch I partly agree. The check
in ep_enable should be done before calling hw_ep_enable.
Beside that:
Acked-by: Michael Grzeschik <mgrzesc...@pengutronix.de>
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