}
/*
- * Disable a port and mark a logical connnect-change event, so that some
+ * Disable a port and mark a logical connect-change event, so that some
* time later khubd will disconnect() any existing usb_device on the port
* and will re-enumerate if there actually is a device attached.
*/
EXPORT_SYMBOL_GPL(usb_set_device_state);
/*
+ * Choose a device number.
+ *
+ * Device numbers are used as filenames in usbfs. On USB-1.1 and
+ * USB-2.0 buses they are also used as device addresses, however on
+ * USB-3.0 buses the address is assigned by the controller hardware
+ * and it usually is not the same as the device number.
+ *
* WUSB devices are simple: they have no hubs behind, so the mapping
* device <-> virtual port number becomes 1:1. Why? to simplify the
* life of the device connection logic in
* the HCD must setup data structures before issuing a set address
* command to the hardware.
*/
-static void choose_address(struct usb_device *udev)
+static void choose_devnum(struct usb_device *udev)
{
int devnum;
struct usb_bus *bus = udev->bus;
}
}
-static void release_address(struct usb_device *udev)
+static void release_devnum(struct usb_device *udev)
{
if (udev->devnum > 0) {
clear_bit(udev->devnum, udev->bus->devmap.devicemap);
}
}
-static void update_address(struct usb_device *udev, int devnum)
+static void update_devnum(struct usb_device *udev, int devnum)
{
/* The address for a WUSB device is managed by wusbcore. */
if (!udev->wusb)
* this quiesces everyting except pending urbs.
*/
usb_set_device_state(udev, USB_STATE_NOTATTACHED);
- dev_info (&udev->dev, "USB disconnect, address %d\n", udev->devnum);
+ dev_info(&udev->dev, "USB disconnect, device number %d\n",
+ udev->devnum);
usb_lock_device(udev);
/* Free the device number and delete the parent's children[]
* (or root_hub) pointer.
*/
- release_address(udev);
+ release_devnum(udev);
/* Avoid races with recursively_mark_NOTATTACHED() */
spin_lock_irq(&device_state_lock);
case 0:
/* TRSTRCY = 10 ms; plus some extra */
msleep(10 + 40);
- update_address(udev, 0);
+ update_devnum(udev, 0);
if (hcd->driver->reset_device) {
status = hcd->driver->reset_device(hcd, udev);
if (status < 0) {
USB_REQ_SET_ADDRESS, 0, devnum, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
if (retval == 0) {
- update_address(udev, devnum);
+ update_devnum(udev, devnum);
/* Device now using proper address. */
usb_set_device_state(udev, USB_STATE_ADDRESS);
usb_ep0_reinit(udev);
}
if (udev->speed != USB_SPEED_SUPER)
dev_info(&udev->dev,
- "%s %s speed %sUSB device using %s and address %d\n",
+ "%s %s speed %sUSB device number %d using %s\n",
(udev->config) ? "reset" : "new", speed, type,
- udev->bus->controller->driver->name, devnum);
+ devnum, udev->bus->controller->driver->name);
/* Set up TT records, if needed */
if (hdev->tt) {
* value.
*/
for (i = 0; i < GET_DESCRIPTOR_TRIES; (++i, msleep(100))) {
- /*
- * An xHCI controller cannot send any packets to a device until
- * a set address command successfully completes.
- */
if (USE_NEW_SCHEME(retry_counter) && !(hcd->driver->flags & HCD_USB3)) {
struct usb_device_descriptor *buf;
int r = 0;
if (udev->speed == USB_SPEED_SUPER) {
devnum = udev->devnum;
dev_info(&udev->dev,
- "%s SuperSpeed USB device using %s and address %d\n",
+ "%s SuperSpeed USB device number %d using %s\n",
(udev->config) ? "reset" : "new",
- udev->bus->controller->driver->name, devnum);
+ devnum, udev->bus->controller->driver->name);
}
/* cope with hardware quirkiness:
fail:
if (retval) {
hub_port_disable(hub, port1, 0);
- update_address(udev, devnum); /* for disconnect processing */
+ update_devnum(udev, devnum); /* for disconnect processing */
}
mutex_unlock(&usb_address0_mutex);
return retval;
else
udev->speed = USB_SPEED_UNKNOWN;
- /*
- * Set the address.
- * Note xHCI needs to issue an address device command later
- * in the hub_port_init sequence for SS/HS/FS/LS devices,
- * and xHC will assign an address to the device. But use
- * kernel assigned address here, to avoid any address conflict
- * issue.
- */
- choose_address(udev);
+ choose_devnum(udev);
if (udev->devnum <= 0) {
status = -ENOTCONN; /* Don't retry */
goto loop;
hub_port_disable(hub, port1, 1);
loop:
usb_ep0_reinit(udev);
- release_address(udev);
+ release_devnum(udev);
hub_free_dev(udev);
usb_put_dev(udev);
if ((status == -ENOTCONN) || (status == -ENOTSUPP))
}
if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
- dev_err (hub_dev,
- "over-current change on port %d\n",
- i);
+ u16 status = 0;
+ u16 unused;
+
+ dev_dbg(hub_dev, "over-current change on port "
+ "%d\n", i);
clear_port_feature(hdev, i,
USB_PORT_FEAT_C_OVER_CURRENT);
+ msleep(100); /* Cool down */
hub_power_on(hub, true);
+ hub_port_status(hub, i, &status, &unused);
+ if (status & USB_PORT_STAT_OVERCURRENT)
+ dev_err(hub_dev, "over-current "
+ "condition on port %d\n", i);
}
if (portchange & USB_PORT_STAT_C_RESET) {
hub->limited_power = 0;
}
if (hubchange & HUB_CHANGE_OVERCURRENT) {
- dev_dbg (hub_dev, "overcurrent change\n");
- msleep(500); /* Cool down */
+ u16 status = 0;
+ u16 unused;
+
+ dev_dbg(hub_dev, "over-current change\n");
clear_hub_feature(hdev, C_HUB_OVER_CURRENT);
+ msleep(500); /* Cool down */
hub_power_on(hub, true);
+ hub_hub_status(hub, &status, &unused);
+ if (status & HUB_STATUS_OVERCURRENT)
+ dev_err(hub_dev, "over-current "
+ "condition\n");
}
}
git.openpandora.org / pandora-kernel.git / blobdiff