On Mon, 19 Aug 2013, Ming Lei wrote:
> This patch introduces ehci_disable_event(), which is applied on
> IAA_WATCHDOG and START_UNLINK_INTR events in case that the two
> events needn't to be handled, so that we may avoid unnecessary CPU
> wakeup.
> @@ -100,6 +100,20 @@ static void ehci_enable_event(struct ehci_hcd *ehci,
> unsigned event,
> }
>
>
Only one blank line here, please.
> +/* Warning: don't call this function from hrtimer handler context */
> +static void ehci_disable_event(struct ehci_hcd *ehci, unsigned event)
> +{
> + ehci->enabled_hrtimer_events &= ~(1 << event);
> + if (!ehci->enabled_hrtimer_events) {
> + ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
> + hrtimer_cancel(&ehci->hrtimer);
> + } else if (ehci->next_hrtimer_event == event) {
> + ehci->next_hrtimer_event =
> + ffs(ehci->enabled_hrtimer_events) - 1;
Should the timer be rescheduled here? It's hard to say without seeing
some test results.
Alan Stern
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