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yaml
---
r: 15455
b: refs/heads/master
c: 1c50c31
h: refs/heads/master
i:
  15453: 6324dd2
  15451: 82e0082
  15447: b773e5c
  15439: 55b5499
  15423: e39b29f
v: v3
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Alan Stern authored and Greg Kroah-Hartman committed Jan 4, 2006
1 parent f647ba4 commit d6e90a0
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Showing 7 changed files with 43 additions and 16 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 8364d6b0be2dbbf162c6aea79615b5025a0d67c2
refs/heads/master: 1c50c317e2e7f15427149cbc216a63366468710e
1 change: 1 addition & 0 deletions trunk/drivers/usb/core/hcd.h
Original file line number Diff line number Diff line change
Expand Up @@ -380,6 +380,7 @@ extern int usb_find_interface_driver (struct usb_device *dev,
#ifdef CONFIG_PM
extern void usb_hcd_suspend_root_hub (struct usb_hcd *hcd);
extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd);
extern void usb_root_hub_lost_power (struct usb_device *rhdev);
extern int hcd_bus_suspend (struct usb_bus *bus);
extern int hcd_bus_resume (struct usb_bus *bus);
#else
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33 changes: 33 additions & 0 deletions trunk/drivers/usb/core/hub.c
Original file line number Diff line number Diff line change
Expand Up @@ -1039,6 +1039,39 @@ void usb_set_device_state(struct usb_device *udev,
EXPORT_SYMBOL(usb_set_device_state);


#ifdef CONFIG_PM

/**
* usb_root_hub_lost_power - called by HCD if the root hub lost Vbus power
* @rhdev: struct usb_device for the root hub
*
* The USB host controller driver calls this function when its root hub
* is resumed and Vbus power has been interrupted or the controller
* has been reset. The routine marks all the children of the root hub
* as NOTATTACHED and marks logical connect-change events on their ports.
*/
void usb_root_hub_lost_power(struct usb_device *rhdev)
{
struct usb_hub *hub;
int port1;
unsigned long flags;

dev_warn(&rhdev->dev, "root hub lost power or was reset\n");
spin_lock_irqsave(&device_state_lock, flags);
hub = hdev_to_hub(rhdev);
for (port1 = 1; port1 <= rhdev->maxchild; ++port1) {
if (rhdev->children[port1 - 1]) {
recursively_mark_NOTATTACHED(
rhdev->children[port1 - 1]);
set_bit(port1, hub->change_bits);
}
}
spin_unlock_irqrestore(&device_state_lock, flags);
}
EXPORT_SYMBOL_GPL(usb_root_hub_lost_power);

#endif

static void choose_address(struct usb_device *udev)
{
int devnum;
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9 changes: 1 addition & 8 deletions trunk/drivers/usb/host/ehci-pci.c
Original file line number Diff line number Diff line change
Expand Up @@ -278,7 +278,6 @@ static int ehci_pci_resume(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
unsigned port;
struct usb_device *root = hcd->self.root_hub;
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
int retval = -EINVAL;

Expand Down Expand Up @@ -312,13 +311,7 @@ static int ehci_pci_resume(struct usb_hcd *hcd)

restart:
ehci_dbg(ehci, "lost power, restarting\n");
for (port = HCS_N_PORTS(ehci->hcs_params); port > 0; ) {
port--;
if (!root->children [port])
continue;
usb_set_device_state(root->children[port],
USB_STATE_NOTATTACHED);
}
usb_root_hub_lost_power(hcd->self.root_hub);

/* Else reset, to cope with power loss or flush-to-storage
* style "resume" having let BIOS kick in during reboot.
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7 changes: 1 addition & 6 deletions trunk/drivers/usb/host/ohci-hcd.c
Original file line number Diff line number Diff line change
Expand Up @@ -795,7 +795,6 @@ static int ohci_restart (struct ohci_hcd *ohci)
int temp;
int i;
struct urb_priv *priv;
struct usb_device *root = ohci_to_hcd(ohci)->self.root_hub;

/* mark any devices gone, so they do nothing till khubd disconnects.
* recycle any "live" eds/tds (and urbs) right away.
Expand All @@ -804,11 +803,7 @@ static int ohci_restart (struct ohci_hcd *ohci)
*/
spin_lock_irq(&ohci->lock);
disable (ohci);
for (i = 0; i < root->maxchild; i++) {
if (root->children [i])
usb_set_device_state (root->children[i],
USB_STATE_NOTATTACHED);
}
usb_root_hub_lost_power(ohci_to_hcd(ohci)->self.root_hub);
if (!list_empty (&ohci->pending))
ohci_dbg(ohci, "abort schedule...\n");
list_for_each_entry (priv, &ohci->pending, pending) {
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1 change: 1 addition & 0 deletions trunk/drivers/usb/host/sl811-hcd.c
Original file line number Diff line number Diff line change
Expand Up @@ -1803,6 +1803,7 @@ sl811h_resume(struct platform_device *dev)
|| !device_can_wakeup(&hcd->self.root_hub->dev)) {
sl811->port1 = 0;
port_power(sl811, 1);
usb_root_hub_lost_power(hcd->self.root_hub);
return 0;
}

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6 changes: 5 additions & 1 deletion trunk/drivers/usb/host/uhci-hcd.c
Original file line number Diff line number Diff line change
Expand Up @@ -748,8 +748,12 @@ static int uhci_resume(struct usb_hcd *hcd)
check_and_reset_hc(uhci);
configure_hc(uhci);

if (uhci->rh_state == UHCI_RH_RESET)
if (uhci->rh_state == UHCI_RH_RESET) {

/* The controller had to be reset */
usb_root_hub_lost_power(hcd->self.root_hub);
suspend_rh(uhci, UHCI_RH_SUSPENDED);
}

spin_unlock_irq(&uhci->lock);

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