On Wed, Mar 18, 2015 at 01:44:11PM +0800, Peter Chen wrote:
> On Tue, Mar 17, 2015 at 10:37:49PM +0800, Li Jun wrote:
> > If gadget with HNP polling support receives GetStatus request of otg status
> > selector, it feedback to host with host request flag to indicate if it wants
> > to take host role.
> >
> > Signed-off-by: Li Jun <jun.li@xxxxxxxxxxxxx>
> > ---
> > drivers/usb/gadget/composite.c | 25 +++++++++++++++++--------
> > 1 file changed, 17 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
> > index 13adfd1..1f73bd9 100644
> > --- a/drivers/usb/gadget/composite.c
> > +++ b/drivers/usb/gadget/composite.c
> > @@ -1594,15 +1594,24 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
> > *((u8 *)req->buf) = value;
> > value = min(w_length, (u16) 1);
> > break;
> > -
> > - /*
> > - * USB 3.0 additions:
> > - * Function driver should handle get_status request. If such cb
> > - * wasn't supplied we respond with default value = 0
> > - * Note: function driver should supply such cb only for the first
> > - * interface of the function
> > - */
> > case USB_REQ_GET_STATUS:
> > + if (gadget_is_otg(gadget) && gadget->hnp_polling_support &&
> > + (w_index == OTG_STS_SELECTOR)) {
> > + if (ctrl->bRequestType != (USB_DIR_IN |
> > + USB_RECIP_DEVICE))
>
> Any cases the above conditions will be true?
>
No real defined case, this check just make sure the request type is correct
as spec defined.
Li Jun
> > + goto unknown;
> > + *((u8 *)req->buf) = gadget->host_request_flag;
> > + value = 1;
> > + break;
> > + }
> > +
> > + /*
> > + * USB 3.0 additions:
> > + * Function driver should handle get_status request. If such cb
> > + * wasn't supplied we respond with default value = 0
> > + * Note: function driver should supply such cb only for the
> > + * first interface of the function
> > + */
> > if (!gadget_is_superspeed(gadget))
> > goto unknown;
> > if (ctrl->bRequestType != (USB_DIR_IN | USB_RECIP_INTERFACE))
> > --
> > 1.7.9.5
> >
>
> --
>
> Best Regards,
> Peter Chen
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