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authorLucas Stach <l.stach@pengutronix.de>2016-08-15 16:09:07 +0200
committerPeter Chen <peter.chen@nxp.com>2016-09-14 04:58:13 +0200
commitc744a0db756b34c7e2b60100bcfc58beb6b68c99 (patch)
tree65519752d51a2cd21bc5b76209ed4ee99c4a67de /drivers/usb
parentusb: chipidea: udc: Use direction flags consequently (diff)
downloadlinux-c744a0db756b34c7e2b60100bcfc58beb6b68c99.tar.xz
linux-c744a0db756b34c7e2b60100bcfc58beb6b68c99.zip
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/chipidea/host.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 053bac9d983c..96ae69502c86 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -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;