- if (ehci->async_iaa) {
- u32 cmd, status;
-
- /* If we get here, IAA is *REALLY* late. It's barely
- * conceivable that the system is so busy that CMD_IAAD
- * is still legitimately set, so let's be sure it's
- * clear before we read STS_IAA. (The HC should clear
- * CMD_IAAD when it sets STS_IAA.)
- */
- cmd = ehci_readl(ehci, &ehci->regs->command);
-
- /*
- * If IAA is set here it either legitimately triggered
- * after the watchdog timer expired (_way_ late, so we'll
- * still count it as lost) ... or a silicon erratum:
- * - VIA seems to set IAA without triggering the IRQ;
- * - IAAD potentially cleared without setting IAA.
- */
- status = ehci_readl(ehci, &ehci->regs->status);
- if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
- COUNT(ehci->stats.lost_iaa);
- ehci_writel(ehci, STS_IAA, &ehci->regs->status);
- }
+ if (!ehci->async_iaa || ehci->rh_state != EHCI_RH_RUNNING)
+ return;
+
+ /* If we get here, IAA is *REALLY* late. It's barely
+ * conceivable that the system is so busy that CMD_IAAD
+ * is still legitimately set, so let's be sure it's
+ * clear before we read STS_IAA. (The HC should clear
+ * CMD_IAAD when it sets STS_IAA.)
+ */
+ cmd = ehci_readl(ehci, &ehci->regs->command);