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Commit 7e176dcb authored by Thomas Pugliese's avatar Thomas Pugliese Committed by Greg Kroah-Hartman
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usb: wusbcore: implement hwahc_op_get_frame_number 



This patch adds an implementation for hwahc_op_get_frame_number.  The
request is fulfulled by forwarding it to the lower hcd.  This was done
because the GET_TIME request on the HWA requires sending an URB to the
HWA and waiting for the results which cannot be done in atomic context.

Signed-off-by: default avatarThomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 33186c44

drivers/usb/host/hwa-hc.c

+7 −3
Original line number Diff line number Diff line
@@ -199,10 +199,14 @@ static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd) 
{

	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);

	struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);

	struct wahc *wa = &hwahc->wa;



	dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,

		usb_hcd, hwahc);

	return -ENOSYS;

	/*

	 * We cannot query the HWA for the WUSB time since that requires sending

	 * a synchronous URB and this function can be called in_interrupt.

	 * Instead, query the USB frame number for our parent and use that.

	 */

	return usb_get_current_frame_number(wa->usb_dev);

}



static int hwahc_op_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,