On Tue, Apr 02, 2013 at 06:10:54PM +0200, Michael Grzeschik wrote: > /* first nuke then test link, e.g. previous status has not sent */ > if (!list_empty(&mReq->queue)) { > dev_err(mEp->ci->dev, "request already in queue\n"); > @@ -1071,6 +1077,9 @@ static int ep_enable(struct usb_ep *ep, > > if (mEp->type == USB_ENDPOINT_XFER_CONTROL) > cap |= QH_IOS; > + else if (mEp->type == USB_ENDPOINT_XFER_ISOC) > + cap |= QH_ISO_TRANS(mEp->ep.maxpacket) << __ffs(QH_MULT); > + Michael, as I said before, the mult bit is calculated by total bytes and max packet size, and you need to add it at QH config before prime. The fsl_udc_core also did wrong for this. -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html