Peripheral answers OTG status selector request from host according to host request flag of gadget, this flag may be set via kernel interface by application.
Signed-off-by: Li Jun <[email protected]> --- drivers/usb/chipidea/udc.c | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index b08ab1d..61c5171 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -853,8 +853,16 @@ __acquires(hwep->lock) } if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) { - /* Assume that device is bus powered for now. */ - *(u16 *)req->buf = ci->remote_wakeup << 1; + if ((setup->wIndex == OTG_STS_SELECTOR) && + (gadget_is_otg(&ci->gadget))) { + if (ci->gadget.host_request_flag) + *(u16 *)req->buf = HOST_REQUEST_FLAG; + else + *(u16 *)req->buf = 0; + } else { + /* Assume that device is bus powered for now. */ + *(u16 *)req->buf = ci->remote_wakeup << 1; + } retval = 0; } else if ((setup->bRequestType & USB_RECIP_MASK) \ == USB_RECIP_ENDPOINT) { -- 1.7.8 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
