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Commit c5348b62 authored by Li Jun's avatar Li Jun Committed by Felipe Balbi
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usb: gadget: composite: handle otg status selector request from OTG host 



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.

Acked-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarLi Jun <jun.li@nxp.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent d6da40af

drivers/usb/gadget/composite.c

+17 −8
Original line number Diff line number Diff line
@@ -1707,15 +1707,24 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) 
		*((u8 *)req->buf) = value;

		value = min(w_length, (u16) 1);

		break;

	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))

				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

		 * Note: function driver should supply such cb only for the

		 * first interface of the function

		 */

	case USB_REQ_GET_STATUS:

		if (!gadget_is_superspeed(gadget))

			goto unknown;

		if (ctrl->bRequestType != (USB_DIR_IN | USB_RECIP_INTERFACE))