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Commit 687ef981 authored by Felipe Balbi's avatar Felipe Balbi
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usb: dwc3: gadget: clear stall when disabling endpoint 



so it seems like DWC3 IP doesn't clear stalls
automatically when we disable an endpoint, because
of that, we _must_ make sure stalls are cleared
before clearing the proper bit in DALEPENA register.

Cc: <stable@vger.kernel.org> # v3.4+
Reported-by: default avatarJohannes Stezenbach <js@sig21.net>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent c9eaa447

drivers/usb/dwc3/gadget.c

+4 −0
Original line number Diff line number Diff line
@@ -608,6 +608,10 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) 


	dwc3_remove_requests(dwc, dep);



	/* make sure HW endpoint isn't stalled */

	if (dep->flags & DWC3_EP_STALL)

		__dwc3_gadget_ep_set_halt(dep, 0);



	reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);

	reg &= ~DWC3_DALEPENA_EP(dep->number);

	dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);