diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/atm/cxacru.c | 3 | ||||
-rw-r--r-- | drivers/usb/atm/usbatm.c | 4 | ||||
-rw-r--r-- | drivers/usb/core/hcd-pci.c | 3 | ||||
-rw-r--r-- | drivers/usb/core/hcd.c | 15 | ||||
-rw-r--r-- | drivers/usb/core/hcd.h | 7 | ||||
-rw-r--r-- | drivers/usb/host/ehci-pci.c | 46 | ||||
-rw-r--r-- | drivers/usb/host/ehci-q.c | 24 | ||||
-rw-r--r-- | drivers/usb/host/ehci-sched.c | 18 | ||||
-rw-r--r-- | drivers/usb/host/ohci-hcd.c | 6 | ||||
-rw-r--r-- | drivers/usb/host/ohci-hub.c | 24 | ||||
-rw-r--r-- | drivers/usb/host/ohci-pci.c | 27 | ||||
-rw-r--r-- | drivers/usb/host/uhci-hcd.c | 6 |
12 files changed, 149 insertions, 34 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 79861ee12a2..9d59dc62e6d 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -787,6 +787,9 @@ static const struct usb_device_id cxacru_usb_ids[] = { { /* V = Conexant P = ADSL modem (Hasbani project) */ USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 }, + { /* V = Conexant P = ADSL modem (Well PTI-800 */ + USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 + }, { /* V = Conexant P = ADSL modem */ USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 }, diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index c466739428b..2e6593e6c1b 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -879,7 +879,7 @@ static int usbatm_atm_init(struct usbatm_data *instance) fail: instance->atm_dev = NULL; - shutdown_atm_dev(atm_dev); /* usbatm_atm_dev_close will eventually be called */ + atm_dev_deregister(atm_dev); /* usbatm_atm_dev_close will eventually be called */ return ret; } @@ -1164,7 +1164,7 @@ void usbatm_usb_disconnect(struct usb_interface *intf) /* ATM finalize */ if (instance->atm_dev) - shutdown_atm_dev(instance->atm_dev); + atm_dev_deregister(instance->atm_dev); usbatm_put_instance(instance); /* taken in usbatm_usb_probe */ } diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 5131d88e8c5..29b5b2a6e18 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -219,6 +219,7 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message) goto done; } } + synchronize_irq(dev->irq); /* FIXME until the generic PM interfaces change a lot more, this * can't use PCI D1 and D2 states. For example, the confusion @@ -392,7 +393,7 @@ int usb_hcd_pci_resume (struct pci_dev *dev) dev->dev.power.power_state = PMSG_ON; - hcd->saw_irq = 0; + clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); if (hcd->driver->resume) { retval = hcd->driver->resume(hcd); diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 5e5f65a475a..da24c31ee00 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1315,11 +1315,12 @@ static int hcd_unlink_urb (struct urb *urb, int status) * finish unlinking the initial failed usb_set_address() * or device descriptor fetch. */ - if (!hcd->saw_irq && hcd->self.root_hub != urb->dev) { + if (!test_bit(HCD_FLAG_SAW_IRQ, &hcd->flags) + && hcd->self.root_hub != urb->dev) { dev_warn (hcd->self.controller, "Unlink after no-IRQ? " "Controller is probably using the wrong IRQ." "\n"); - hcd->saw_irq = 1; + set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); } urb->status = status; @@ -1649,13 +1650,15 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd, struct pt_regs * r) struct usb_hcd *hcd = __hcd; int start = hcd->state; - if (start == HC_STATE_HALT) + if (unlikely(start == HC_STATE_HALT || + !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) return IRQ_NONE; if (hcd->driver->irq (hcd, r) == IRQ_NONE) return IRQ_NONE; - hcd->saw_irq = 1; - if (hcd->state == HC_STATE_HALT) + set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); + + if (unlikely(hcd->state == HC_STATE_HALT)) usb_hc_died (hcd); return IRQ_HANDLED; } @@ -1768,6 +1771,8 @@ int usb_add_hcd(struct usb_hcd *hcd, dev_info(hcd->self.controller, "%s\n", hcd->product_desc); + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + /* till now HC has been in an indeterminate state ... */ if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) { dev_err(hcd->self.controller, "can't reset\n"); diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index 24a62a2ff86..c8a1b350e2c 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -72,7 +72,12 @@ struct usb_hcd { /* usb_bus.hcpriv points to this */ * hardware info/state */ const struct hc_driver *driver; /* hw-specific hooks */ - unsigned saw_irq : 1; + + /* Flags that need to be manipulated atomically */ + unsigned long flags; +#define HCD_FLAG_HW_ACCESSIBLE 0x00000001 +#define HCD_FLAG_SAW_IRQ 0x00000002 + unsigned can_wakeup:1; /* hw supports wakeup? */ unsigned remote_wakeup:1;/* sw should use wakeup? */ unsigned rh_registered:1;/* is root hub registered? */ diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 441c26064b4..13f73a836e4 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -121,8 +121,8 @@ static int ehci_pci_reinit(struct ehci_hcd *ehci, struct pci_dev *pdev) return 0; } -/* called by khubd or root hub (re)init threads; leaves HC in halt state */ -static int ehci_pci_reset(struct usb_hcd *hcd) +/* called during probe() after chip reset completes */ +static int ehci_pci_setup(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); @@ -141,6 +141,11 @@ static int ehci_pci_reset(struct usb_hcd *hcd) if (retval) return retval; + /* data structure init */ + retval = ehci_init(hcd); + if (retval) + return retval; + /* NOTE: only the parts below this line are PCI-specific */ switch (pdev->vendor) { @@ -154,7 +159,8 @@ static int ehci_pci_reset(struct usb_hcd *hcd) /* AMD8111 EHCI doesn't work, according to AMD errata */ if (pdev->device == 0x7463) { ehci_info(ehci, "ignoring AMD8111 (errata)\n"); - return -EIO; + retval = -EIO; + goto done; } break; case PCI_VENDOR_ID_NVIDIA: @@ -207,9 +213,8 @@ static int ehci_pci_reset(struct usb_hcd *hcd) /* REVISIT: per-port wake capability (PCI 0x62) currently unused */ retval = ehci_pci_reinit(ehci, pdev); - - /* finish init */ - return ehci_init(hcd); +done: + return retval; } /*-------------------------------------------------------------------------*/ @@ -228,14 +233,36 @@ static int ehci_pci_reset(struct usb_hcd *hcd) static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); + unsigned long flags; + int rc = 0; if (time_before(jiffies, ehci->next_statechange)) msleep(10); + /* Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + * + * This is still racy as hcd->state is manipulated outside of + * any locks =P But that will be a different fix. + */ + spin_lock_irqsave (&ehci->lock, flags); + if (hcd->state != HC_STATE_SUSPENDED) { + rc = -EINVAL; + goto bail; + } + writel (0, &ehci->regs->intr_enable); + (void)readl(&ehci->regs->intr_enable); + + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + bail: + spin_unlock_irqrestore (&ehci->lock, flags); + // could save FLADJ in case of Vaux power loss // ... we'd only use it to handle clock skew - return 0; + return rc; } static int ehci_pci_resume(struct usb_hcd *hcd) @@ -251,6 +278,9 @@ static int ehci_pci_resume(struct usb_hcd *hcd) if (time_before(jiffies, ehci->next_statechange)) msleep(100); + /* Mark hardware accessible again as we are out of D3 state by now */ + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + /* If CF is clear, we lost PCI Vaux power and need to restart. */ if (readl(&ehci->regs->configured_flag) != FLAG_CF) goto restart; @@ -319,7 +349,7 @@ static const struct hc_driver ehci_pci_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_pci_reset, + .reset = ehci_pci_setup, .start = ehci_run, #ifdef CONFIG_PM .suspend = ehci_pci_suspend, diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 5bb872c3496..bf03ec0d8ee 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -912,6 +912,7 @@ submit_async ( int epnum; unsigned long flags; struct ehci_qh *qh = NULL; + int rc = 0; qtd = list_entry (qtd_list->next, struct ehci_qtd, qtd_list); epnum = ep->desc.bEndpointAddress; @@ -926,21 +927,28 @@ submit_async ( #endif spin_lock_irqsave (&ehci->lock, flags); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) { + rc = -ESHUTDOWN; + goto done; + } + qh = qh_append_tds (ehci, urb, qtd_list, epnum, &ep->hcpriv); + if (unlikely(qh == NULL)) { + rc = -ENOMEM; + goto done; + } /* Control/bulk operations through TTs don't need scheduling, * the HC and TT handle it when the TT has a buffer ready. */ - if (likely (qh != NULL)) { - if (likely (qh->qh_state == QH_STATE_IDLE)) - qh_link_async (ehci, qh_get (qh)); - } + if (likely (qh->qh_state == QH_STATE_IDLE)) + qh_link_async (ehci, qh_get (qh)); + done: spin_unlock_irqrestore (&ehci->lock, flags); - if (unlikely (qh == NULL)) { + if (unlikely (qh == NULL)) qtd_list_free (ehci, urb, qtd_list); - return -ENOMEM; - } - return 0; + return rc; } /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index f0c8aa1ccd5..57e77374d22 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -602,6 +602,12 @@ static int intr_submit ( spin_lock_irqsave (&ehci->lock, flags); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) { + status = -ESHUTDOWN; + goto done; + } + /* get qh and force any scheduling errors */ INIT_LIST_HEAD (&empty); qh = qh_append_tds (ehci, urb, &empty, epnum, &ep->hcpriv); @@ -1456,7 +1462,11 @@ static int itd_submit (struct ehci_hcd *ehci, struct urb *urb, /* schedule ... need to lock */ spin_lock_irqsave (&ehci->lock, flags); - status = iso_stream_schedule (ehci, urb, stream); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) + status = -ESHUTDOWN; + else + status = iso_stream_schedule (ehci, urb, stream); if (likely (status == 0)) itd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); spin_unlock_irqrestore (&ehci->lock, flags); @@ -1815,7 +1825,11 @@ static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb, /* schedule ... need to lock */ spin_lock_irqsave (&ehci->lock, flags); - status = iso_stream_schedule (ehci, urb, stream); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) + status = -ESHUTDOWN; + else + status = iso_stream_schedule (ehci, urb, stream); if (status == 0) sitd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); spin_unlock_irqrestore (&ehci->lock, flags); diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 5c0c6c8a7a8..bf1d9abc07a 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -115,7 +115,7 @@ /*-------------------------------------------------------------------------*/ -// #define OHCI_VERBOSE_DEBUG /* not always helpful */ +#undef OHCI_VERBOSE_DEBUG /* not always helpful */ /* For initializing controller (mask in an HCFS mode too) */ #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR @@ -253,6 +253,10 @@ static int ohci_urb_enqueue ( spin_lock_irqsave (&ohci->lock, flags); /* don't submit to a dead HC */ + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + retval = -ENODEV; + goto fail; + } if (!HC_IS_RUNNING(hcd->state)) { retval = -ENODEV; goto fail; diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index e01e77bc324..72e3b12a192 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -53,6 +53,11 @@ static int ohci_bus_suspend (struct usb_hcd *hcd) spin_lock_irqsave (&ohci->lock, flags); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) { + spin_unlock_irqrestore (&ohci->lock, flags); + return -ESHUTDOWN; + } + ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); switch (ohci->hc_control & OHCI_CTRL_HCFS) { case OHCI_USB_RESUME: @@ -140,11 +145,19 @@ static int ohci_bus_resume (struct usb_hcd *hcd) struct ohci_hcd *ohci = hcd_to_ohci (hcd); u32 temp, enables; int status = -EINPROGRESS; + unsigned long flags; if (time_before (jiffies, ohci->next_statechange)) msleep(5); - spin_lock_irq (&ohci->lock); + spin_lock_irqsave (&ohci->lock, flags); + + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) { + spin_unlock_irqrestore (&ohci->lock, flags); + return -ESHUTDOWN; + } + + ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { @@ -179,7 +192,7 @@ static int ohci_bus_resume (struct usb_hcd *hcd) ohci_dbg (ohci, "lost power\n"); status = -EBUSY; } - spin_unlock_irq (&ohci->lock); + spin_unlock_irqrestore (&ohci->lock, flags); if (status == -EBUSY) { (void) ohci_init (ohci); return ohci_restart (ohci); @@ -297,8 +310,8 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf) /* handle autosuspended root: finish resuming before * letting khubd or root hub timer see state changes. */ - if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER - || !HC_IS_RUNNING(hcd->state)) { + if (unlikely((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER + || !HC_IS_RUNNING(hcd->state))) { can_suspend = 0; goto done; } @@ -508,6 +521,9 @@ static int ohci_hub_control ( u32 temp; int retval = 0; + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) + return -ESHUTDOWN; + switch (typeReq) { case ClearHubFeature: switch (wValue) { diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index 5f22e6590cd..1b09dde068e 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -105,13 +105,36 @@ ohci_pci_start (struct usb_hcd *hcd) static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) { - /* root hub was already suspended */ - return 0; + struct ohci_hcd *ohci = hcd_to_ohci (hcd); + unsigned long flags; + int rc = 0; + + /* Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + * + * This is still racy as hcd->state is manipulated outside of + * any locks =P But that will be a different fix. + */ + spin_lock_irqsave (&ohci->lock, flags); + if (hcd->state != HC_STATE_SUSPENDED) { + rc = -EINVAL; + goto bail; + } + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + (void)ohci_readl(ohci, &ohci->regs->intrdisable); + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + bail: + spin_unlock_irqrestore (&ohci->lock, flags); + + return rc; } static int ohci_pci_resume (struct usb_hcd *hcd) { + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); usb_hcd_resume_root_hub(hcd); return 0; } diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index d33ce3982a5..ed550132db0 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -717,6 +717,7 @@ static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message) * at the source, so we must turn off PIRQ. */ pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, 0); + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); uhci->hc_inaccessible = 1; hcd->poll_rh = 0; @@ -733,6 +734,11 @@ static int uhci_resume(struct usb_hcd *hcd) dev_dbg(uhci_dev(uhci), "%s\n", __FUNCTION__); + /* We aren't in D3 state anymore, we do that even if dead as I + * really don't want to keep a stale HCD_FLAG_HW_ACCESSIBLE=0 + */ + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + if (uhci->rh_state == UHCI_RH_RESET) /* Dead */ return 0; spin_lock_irq(&uhci->lock); |