Commit c744a0db authored Aug 15, 2016 by Lucas Stach Committed by Peter Chen Sep 14, 2016

usb: chipidea: host: disable io watchdog



The Chipidea EHCI core seems to behave sanely and doesn't need
the IO watchdog. This kills off 10 non-deferrable wakeup events
per second when the controller is otherwise idle.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Peter Chen <peter.chen@nxp.com>

parent c6ee9f23

drivers/usb/chipidea/host.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -81,12 +81,15 @@ static int ehci_ci_reset(struct usb_hcd *hcd)
		{
		struct device *dev = hcd->self.controller;
		struct ci_hdrc *ci = dev_get_drvdata(dev);
		struct ehci_hcd *ehci = hcd_to_ehci(hcd);
		int ret;

		ret = ehci_setup(hcd);
		if (ret)
		return ret;

		ehci->need_io_watchdog = 0;

		ci_platform_configure(ci);

		return ret;

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