static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh) { /* failfast */ if (!HC_IS_RUNNING(ehci_to_hcd(ehci)->state) && ehci->reclaim) end_unlink_async(ehci); /* if it's not linked then there's nothing to do */ if (qh->qh_state != QH_STATE_LINKED) ; /* defer till later if busy */ else if (ehci->reclaim) { struct ehci_qh *last; for (last = ehci->reclaim; last->reclaim; last = last->reclaim) continue; qh->qh_state = QH_STATE_UNLINK_WAIT; last->reclaim = qh; /* start IAA cycle */ } else start_unlink_async (ehci, qh); }
static void ehci_watchdog (unsigned long param) { struct ehci_hcd *ehci = (struct ehci_hcd *) param; unsigned long flags; spin_lock_irqsave (&ehci->lock, flags); /* lost IAA irqs wedge things badly; seen with a vt8235 */ if (ehci->reclaim) { u32 status = readl (&ehci->regs->status); if (status & STS_IAA) { ehci_vdbg (ehci, "lost IAA\n"); COUNT (ehci->stats.lost_iaa); writel (STS_IAA, &ehci->regs->status); ehci->reclaim_ready = 1; } } /* stop async processing after it's idled a bit */ if (test_bit (TIMER_ASYNC_OFF, &ehci->actions)) start_unlink_async (ehci, ehci->async); /* ehci could run by timer, without IRQs ... */ ehci_work (ehci, NULL); spin_unlock_irqrestore (&ehci->lock, flags); }
static void ehci_watchdog(unsigned long param) { struct ehci_hcd *ehci = (struct ehci_hcd *) param; unsigned long flags; spin_lock_irqsave(&ehci->lock, flags); /* stop async processing after it's idled a bit */ if (test_bit (TIMER_ASYNC_OFF, &ehci->actions)) start_unlink_async (ehci, ehci->async); /* ehci could run by timer, without IRQs ... */ ehci_work (ehci); spin_unlock_irqrestore (&ehci->lock, flags); }