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.pugli...@gmail.com>
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
index 483990c..02650f7 100644
--- a/drivers/usb/host/hwa-hc.c
+++ b/drivers/usb/host/hwa-hc.c
@@ -161,6 +161,11 @@ 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);
--
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