Messages in this thread |  | | Date | Tue, 25 Feb 2014 09:18:40 +0800 | From | Peter Chen <> | Subject | Re: [PATCH 2/6] usb: gadget: mv_udc: disable HW zlt for ep0 |
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On Mon, Feb 24, 2014 at 04:03:12PM +0800, Neil Zhang wrote: > Hardware zlt will try to send the zero length packet automatically > when the data transferd is multiple times of max packet, this will > cause issues on Windows. > So let's disable HW zlt by default.
Would you have description that what kinds of issue on Windows if zlt is is selected?
Peter
> > Signed-off-by: Neil Zhang <zhangwm@marvell.com> > --- > drivers/usb/gadget/mv_udc_core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c > index ebc0dfd..657ac5c 100644 > --- a/drivers/usb/gadget/mv_udc_core.c > +++ b/drivers/usb/gadget/mv_udc_core.c > @@ -89,7 +89,7 @@ static void ep0_reset(struct mv_udc *udc) > /* configure ep0 endpoint capabilities in dQH */ > ep->dqh->max_packet_length = > (EP0_MAX_PKT_SIZE << EP_QUEUE_HEAD_MAX_PKT_LEN_POS) > - | EP_QUEUE_HEAD_IOS; > + | EP_QUEUE_HEAD_IOS | EP_QUEUE_HEAD_ZLT_SEL; > > ep->dqh->next_dtd_ptr = EP_QUEUE_HEAD_NEXT_TERMINATE; > > -- > 1.7.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > >
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Best Regards, Peter Chen
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