/* completion function, fires on port status changes and various faults */
-static void hub_irq(struct urb *urb, struct pt_regs *regs)
+static void hub_irq(struct urb *urb)
{
- struct usb_hub *hub = (struct usb_hub *)urb->context;
+ struct usb_hub *hub = urb->context;
int status;
int i;
unsigned long bits;
goto resubmit;
hub->error = urb->status;
/* FALL THROUGH */
-
+
/* let khubd handle things */
case 0: /* we got data: port status changed */
bits = 0;
msleep(max(pgood_delay, (unsigned) 100));
}
-static inline void __hub_quiesce(struct usb_hub *hub)
+static void hub_quiesce(struct usb_hub *hub)
{
/* (nonblocking) khubd and related activity won't re-trigger */
hub->quiescing = 1;
hub->activating = 0;
hub->resume_root_hub = 0;
-}
-static void hub_quiesce(struct usb_hub *hub)
-{
/* (blocking) stop khubd and related activity */
- __hub_quiesce(hub);
usb_kill_urb(hub->urb);
if (hub->has_indicators)
cancel_delayed_work(&hub->leds);
if (udev->state == USB_STATE_NOTATTACHED)
; /* do nothing */
else if (new_state != USB_STATE_NOTATTACHED) {
- udev->state = new_state;
/* root hub wakeup capabilities are managed out-of-band
* and may involve silicon errata ... ignore them here.
*/
if (udev->parent) {
- if (new_state == USB_STATE_CONFIGURED)
+ if (udev->state == USB_STATE_SUSPENDED
+ || new_state == USB_STATE_SUSPENDED)
+ ; /* No change to wakeup settings */
+ else if (new_state == USB_STATE_CONFIGURED)
device_init_wakeup(&udev->dev,
(udev->actconfig->desc.bmAttributes
& USB_CONFIG_ATT_WAKEUP));
- else if (new_state != USB_STATE_SUSPENDED)
+ else
device_init_wakeup(&udev->dev, 0);
}
+ udev->state = new_state;
} else
recursively_mark_NOTATTACHED(udev);
spin_unlock_irqrestore(&device_state_lock, flags);
unsigned long flags;
dev_warn(&rhdev->dev, "root hub lost power or was reset\n");
+
+ /* Make sure no potential wakeup events get lost,
+ * by forcing the root hub to be resumed.
+ */
+ rhdev->dev.power.prev_state.event = PM_EVENT_ON;
+
spin_lock_irqsave(&device_state_lock, flags);
hub = hdev_to_hub(rhdev);
for (port1 = 1; port1 <= rhdev->maxchild; ++port1) {
#ifdef CONFIG_USB_OTG
#include "otg_whitelist.h"
+static int __usb_port_suspend(struct usb_device *, int port1);
#endif
/**
USB_DT_OTG, (void **) &desc) == 0) {
if (desc->bmAttributes & USB_OTG_HNP) {
unsigned port1 = udev->portnum;
- struct usb_device *root = udev->parent;
-
+
dev_info(&udev->dev,
"Dual-Role OTG device on %sHNP port\n",
(port1 == bus->otg_port)
* (Includes HNP test device.)
*/
if (udev->bus->b_hnp_enable || udev->bus->is_b_host) {
- static int __usb_port_suspend(struct usb_device *,
- int port1);
err = __usb_port_suspend(udev, udev->bus->otg_port);
if (err < 0)
dev_dbg(&udev->dev, "HNP fail, %d\n", err);
* NOTE: OTG devices may issue remote wakeup (or SRP) even when
* we don't explicitly enable it here.
*/
- if (device_may_wakeup(&udev->dev)) {
+ if (udev->do_remote_wakeup) {
status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
USB_DEVICE_REMOTE_WAKEUP, 0,
USB_CTRL_SET_TIMEOUT);
} else {
/* device has up to 10 msec to fully suspend */
- dev_dbg(&udev->dev, "usb suspend\n");
+ dev_dbg(&udev->dev, "usb %ssuspend\n",
+ udev->auto_pm ? "auto-" : "");
usb_set_device_state(udev, USB_STATE_SUSPENDED);
msleep(10);
}
status = hub_port_suspend(hdev_to_hub(udev->parent), port1,
udev);
else {
- dev_dbg(&udev->dev, "usb suspend\n");
+ dev_dbg(&udev->dev, "usb %ssuspend\n",
+ udev->auto_pm ? "auto-" : "");
usb_set_device_state(udev, USB_STATE_SUSPENDED);
}
return status;
/* drive resume for at least 20 msec */
if (udev)
- dev_dbg(&udev->dev, "RESUME\n");
+ dev_dbg(&udev->dev, "usb %sresume\n",
+ udev->auto_pm ? "auto-" : "");
msleep(25);
#define LIVE_FLAGS ( USB_PORT_STAT_POWER \
// NOTE this fails if parent is also suspended...
status = hub_port_resume(hdev_to_hub(udev->parent),
udev->portnum, udev);
- } else
+ } else {
+ dev_dbg(&udev->dev, "usb %sresume\n",
+ udev->auto_pm ? "auto-" : "");
status = finish_port_resume(udev);
+ }
if (status < 0)
dev_dbg(&udev->dev, "can't resume, status %d\n", status);
return status;
{
int status = 0;
- /* don't repeat RESUME sequence if this device
- * was already woken up by some other task
- */
+ /* All this just to avoid sending a port-resume message
+ * to the parent hub! */
+
usb_lock_device(udev);
+ usb_pm_lock(udev);
if (udev->state == USB_STATE_SUSPENDED) {
- dev_dbg(&udev->dev, "RESUME (wakeup)\n");
+ dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-");
/* TRSMRCY = 10 msec */
msleep(10);
status = finish_port_resume(udev);
+ if (status == 0)
+ udev->dev.power.power_state.event = PM_EVENT_ON;
}
+ usb_pm_unlock(udev);
if (status == 0)
- usb_resume_both(udev);
+ usb_autoresume_device(udev, 0);
usb_unlock_device(udev);
return status;
}
== PM_EVENT_ON
#endif
) {
- dev_dbg(&intf->dev, "port %d nyet suspended\n", port1);
+ if (!hdev->auto_pm)
+ dev_dbg(&intf->dev, "port %d nyet suspended\n",
+ port1);
return -EBUSY;
}
}
return 0;
}
+#define hub_suspend NULL
+#define hub_resume NULL
#endif
-void usb_suspend_root_hub(struct usb_device *hdev)
-{
- struct usb_hub *hub = hdev_to_hub(hdev);
-
- /* This also makes any led blinker stop retriggering. We're called
- * from irq, so the blinker might still be scheduled. Caller promises
- * that the root hub status URB will be canceled.
- */
- __hub_quiesce(hub);
- mark_quiesced(to_usb_interface(hub->intfdev));
-}
-
void usb_resume_root_hub(struct usb_device *hdev)
{
struct usb_hub *hub = hdev_to_hub(hdev);
usb_set_device_state(udev, USB_STATE_POWERED);
udev->speed = USB_SPEED_UNKNOWN;
udev->bus_mA = hub->mA_per_port;
+ udev->level = hdev->level + 1;
/* set the address */
choose_address(udev);
* stub "device" node was never suspended.
*/
if (i)
- usb_resume_both(hdev);
+ usb_autoresume_device(hdev, 0);
/* If this is an inactive or suspended hub, do nothing */
if (hub->quiescing)
return -EINVAL;
}
+ /* Prevent autosuspend during the reset */
+ usb_autoresume_device(udev, 1);
+
if (iface && iface->condition != USB_INTERFACE_BINDING)
iface = NULL;
}
}
+ usb_autosuspend_device(udev, 1);
return ret;
}
EXPORT_SYMBOL(usb_reset_composite_device);
projects / powerpc.git / blobdiff