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usb: chipidea: host: disable io watchdog

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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>
This commit is contained in:
Lucas Stach 2016-08-15 16:09:07 +02:00 committed by Peter Chen
parent c6ee9f2345
commit c744a0db75
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/chipidea/host.c
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@ -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;