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-rw-r--r--drivers/usb/core/hcd-pci.c4
-rw-r--r--drivers/usb/core/hcd.h4
-rw-r--r--drivers/usb/host/ehci-pci.c17
-rw-r--r--drivers/usb/host/ohci-pci.c13
-rw-r--r--drivers/usb/host/uhci-hcd.c12
5 files changed, 23 insertions, 27 deletions
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 5db4d40..91f2885 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -237,7 +237,7 @@ static int hcd_pci_suspend(struct device *dev)
return retval;
if (hcd->driver->pci_suspend) {
- retval = hcd->driver->pci_suspend(hcd, PMSG_SUSPEND);
+ retval = hcd->driver->pci_suspend(hcd);
suspend_report_result(hcd->driver->pci_suspend, retval);
if (retval)
return retval;
@@ -344,7 +344,7 @@ static int resume_common(struct device *dev, bool hibernated)
clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
if (hcd->driver->pci_resume) {
- retval = hcd->driver->pci_resume(hcd);
+ retval = hcd->driver->pci_resume(hcd, hibernated);
if (retval) {
dev_err(dev, "PCI post-resume error %d!\n", retval);
usb_hc_died(hcd);
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 7f068d6..174170f 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -182,10 +182,10 @@ struct hc_driver {
* a whole, not just the root hub; they're for PCI bus glue.
*/
/* called after suspending the hub, before entering D3 etc */
- int (*pci_suspend) (struct usb_hcd *hcd, pm_message_t message);
+ int (*pci_suspend)(struct usb_hcd *hcd);
/* called after entering D0 (etc), before resuming the hub */
- int (*pci_resume) (struct usb_hcd *hcd);
+ int (*pci_resume)(struct usb_hcd *hcd, bool hibernated);
/* cleanly make HCD stop writing memory and doing I/O */
void (*stop) (struct usb_hcd *hcd);
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 8172383..e749488 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -268,7 +268,7 @@ done:
* Also they depend on separate root hub suspend/resume.
*/
-static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
+static int ehci_pci_suspend(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
unsigned long flags;
@@ -293,12 +293,6 @@ static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
ehci_writel(ehci, 0, &ehci->regs->intr_enable);
(void)ehci_readl(ehci, &ehci->regs->intr_enable);
- /* make sure snapshot being resumed re-enumerates everything */
- if (message.event == PM_EVENT_PRETHAW) {
- ehci_halt(ehci);
- ehci_reset(ehci);
- }
-
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
bail:
spin_unlock_irqrestore (&ehci->lock, flags);
@@ -309,7 +303,7 @@ static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
return rc;
}
-static int ehci_pci_resume(struct usb_hcd *hcd)
+static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
@@ -322,10 +316,12 @@ static int ehci_pci_resume(struct usb_hcd *hcd)
/* Mark hardware accessible again as we are out of D3 state by now */
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- /* If CF is still set, we maintained PCI Vaux power.
+ /* If CF is still set and we aren't resuming from hibernation
+ * then we maintained PCI Vaux power.
* Just undo the effect of ehci_pci_suspend().
*/
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
+ if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
+ !hibernated) {
int mask = INTR_MASK;
if (!hcd->self.root_hub->do_remote_wakeup)
@@ -335,7 +331,6 @@ static int ehci_pci_resume(struct usb_hcd *hcd)
return 0;
}
- ehci_dbg(ehci, "lost power, restarting\n");
usb_root_hub_lost_power(hcd->self.root_hub);
/* Else reset, to cope with power loss or flush-to-storage
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index ee0a68c..d2ba04d 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -372,7 +372,7 @@ static int __devinit ohci_pci_start (struct usb_hcd *hcd)
#ifdef CONFIG_PM
-static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
+static int ohci_pci_suspend(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
@@ -394,10 +394,6 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
- /* make sure snapshot being resumed re-enumerates everything */
- if (message.event == PM_EVENT_PRETHAW)
- ohci_usb_reset(ohci);
-
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
bail:
spin_unlock_irqrestore (&ohci->lock, flags);
@@ -406,9 +402,14 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
}
-static int ohci_pci_resume (struct usb_hcd *hcd)
+static int ohci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ /* Make sure resume from hibernation re-enumerates everything */
+ if (hibernated)
+ ohci_usb_reset(hcd_to_ohci(hcd));
+
ohci_finish_controller_resume(hcd);
return 0;
}
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index c013321..274751b 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -769,7 +769,7 @@ static int uhci_rh_resume(struct usb_hcd *hcd)
return rc;
}
-static int uhci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
+static int uhci_pci_suspend(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int rc = 0;
@@ -795,10 +795,6 @@ static int uhci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
/* FIXME: Enable non-PME# remote wakeup? */
- /* make sure snapshot being resumed re-enumerates everything */
- if (message.event == PM_EVENT_PRETHAW)
- uhci_hc_died(uhci);
-
done_okay:
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
done:
@@ -806,7 +802,7 @@ done:
return rc;
}
-static int uhci_pci_resume(struct usb_hcd *hcd)
+static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
@@ -820,6 +816,10 @@ static int uhci_pci_resume(struct usb_hcd *hcd)
spin_lock_irq(&uhci->lock);
+ /* Make sure resume from hibernation re-enumerates everything */
+ if (hibernated)
+ uhci_hc_died(uhci);
+
/* FIXME: Disable non-PME# remote wakeup? */
/* The firmware or a boot kernel may have changed the controller
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