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Commit be7605c7 authored Nov 18, 2015 by Manu Gautam

USB: ci13xxx: Bail out from ep fifo_flush if USB in LPM



Function drivers might call ep fifo_flush in LPM. Bail
out with error message if so to avoid unclocked access
in case there is any pending response.

Change-Id: I99816a13b4492f73d2c210c2bbe46f27d0870700
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>

parent 62290451

drivers/usb/gadget/ci13xxx_udc.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -3370,6 +3370,7 @@ static int ep_set_wedge(struct usb_ep *ep)
		*/
		static void ep_fifo_flush(struct usb_ep *ep)
		{
		struct ci13xxx *udc = _udc;
		struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
		unsigned long flags;

		@@ -3380,6 +3381,13 @@ static void ep_fifo_flush(struct usb_ep *ep)
		return;
		}

		if (udc->udc_driver->in_lpm && udc->udc_driver->in_lpm(udc)) {
		dev_err(udc->transceiver->dev,
		"%s: Unable to fifo_flush while in LPM\n",
		__func__);
		return;
		}

		spin_lock_irqsave(mEp->lock, flags);

		dbg_event(_usb_addr(mEp), "FFLUSH", 0);