Prevent the USB core from suspending the HWA root hub since bus_suspend and bus_resume are not yet supported. Otherwise the PM system will chew up CPU time constantly attempting to suspend and resume the root hub but never succeeding. Signed-off-by: Thomas Pugliese <thomas.pugliese@xxxxxxxxx> diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index 483990c..5b86ffb 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -161,6 +161,13 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd) usb_hcd->uses_new_polling = 1; set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags); usb_hcd->state = HC_STATE_RUNNING; + + /* + * prevent USB core from suspending the root hub since + * bus_suspend and bus_resume are not yet supported. + */ + pm_runtime_get_noresume(&usb_hcd->self.root_hub->dev); + result = 0; out: mutex_unlock(&wusbhc->mutex); -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
