Commit 95afc394 authored Aug 11, 2015 by Vijayavardhan Vennapusa Committed by Gerrit - the friendly Code Review server Aug 15, 2015

USB: ci13xxx_udc: Fail request queuing for BAM endpoints in FS mode



BAM2BAM mode is not designed to work in Full speed mode and USB HW
behaviour is unknown in case request is queued to BAM2BAM endpoint.
Hence Fail request queueing for BAM endpoints in Full speed mode
as per recommendation from hardware programming guide.

CRs-Fixed: 884453
Change-Id: I29bcdde47bda63c5de15ef8151189888c9cda8da
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>

parent b91d6eb9

drivers/usb/gadget/ci13xxx_udc.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -3203,6 +3203,12 @@ static int ep_queue(struct usb_ep ep, struct usb_request req,
		}
		}

		if (ep->endless && udc->gadget.speed == USB_SPEED_FULL) {
		err("Queueing endless req is not supported for FS");
		retval = -EINVAL;
		goto done;
		}

		/* first nuke then test link, e.g. previous status has not sent */
		if (!list_empty(&mReq->queue)) {
		retval = -EBUSY;