diff options
| -rw-r--r-- | drivers/usb/host/ohci-hub.c | 50 |
1 files changed, 6 insertions, 44 deletions
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index 0b899339cac..ef4965450de 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -41,6 +41,7 @@ static void ohci_rhsc_enable (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); + hcd->poll_rh = 0; ohci_writel (ohci, OHCI_INTR_RHSC, &ohci->regs->intrenable); } @@ -117,8 +118,10 @@ static int ohci_bus_suspend (struct usb_hcd *hcd) /* maybe resume can wake root hub */ if (device_may_wakeup(&ohci_to_hcd(ohci)->self.root_hub->dev)) ohci->hc_control |= OHCI_CTRL_RWE; - else + else { + ohci_writel (ohci, OHCI_INTR_RHSC, &ohci->regs->intrdisable); ohci->hc_control &= ~OHCI_CTRL_RWE; + } /* Suspend hub ... this is the "global (to this bus) suspend" mode, * which doesn't imply ports will first be individually suspended. @@ -310,20 +313,16 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); int i, changed = 0, length = 1; - int can_suspend; unsigned long flags; - can_suspend = device_may_wakeup(&hcd->self.root_hub->dev); spin_lock_irqsave (&ohci->lock, flags); /* handle autosuspended root: finish resuming before * letting khubd or root hub timer see state changes. */ if (unlikely((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER - || !HC_IS_RUNNING(hcd->state))) { - can_suspend = 0; + || !HC_IS_RUNNING(hcd->state))) goto done; - } /* undocumented erratum seen on at least rev D */ if ((ohci->flags & OHCI_QUIRK_AMD756) @@ -348,10 +347,6 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf) for (i = 0; i < ohci->num_ports; i++) { u32 status = roothub_portstatus (ohci, i); - /* can't autosuspend with active ports */ - if ((status & RH_PS_PES) && !(status & RH_PS_PSS)) - can_suspend = 0; - if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC | RH_PS_PRSC)) { changed = 1; @@ -366,42 +361,12 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf) /* after root hub changes, stop polling after debouncing * for a while and maybe kicking in autosuspend */ - if (changed) { + if (changed) ohci->next_statechange = jiffies + STATECHANGE_DELAY; - can_suspend = 0; - } else if (time_before (jiffies, ohci->next_statechange)) { - can_suspend = 0; - } else { -#ifdef CONFIG_PM - can_suspend = can_suspend - && !ohci->ed_rm_list - && ((OHCI_CTRL_HCFS | OHCI_SCHED_ENABLES) - & ohci->hc_control) - == OHCI_USB_OPER; -#endif - if (hcd->uses_new_polling) { - hcd->poll_rh = 0; - /* use INTR_RHSC iff INTR_RD won't apply */ - if (!can_suspend) - ohci_writel (ohci, OHCI_INTR_RHSC, - &ohci->regs->intrenable); - } - } done: spin_unlock_irqrestore (&ohci->lock, flags); -#ifdef CONFIG_PM - /* save power by autosuspending idle root hubs; - * INTR_RD wakes us when there's work - */ - if (can_suspend && usb_trylock_device (hcd->self.root_hub) == 0) { - ohci_vdbg (ohci, "autosuspend\n"); - (void) ohci_bus_suspend (hcd); - usb_unlock_device (hcd->self.root_hub); - } -#endif - return changed ? length : 0; } @@ -572,9 +537,6 @@ static int ohci_hub_control ( break; case USB_PORT_FEAT_SUSPEND: temp = RH_PS_POCI; - if ((ohci->hc_control & OHCI_CTRL_HCFS) - != OHCI_USB_OPER) - usb_hcd_resume_root_hub(hcd); break; case USB_PORT_FEAT_C_SUSPEND: temp = RH_PS_PSSC; |