Merge tag 'usb-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB changes from Greg Kroah-Hartman:
 "Here is the big USB pull request for 3.7-rc1

  There are lots of gadget driver changes (including copying a bunch of
  files into the drivers/staging/ccg/ directory so that the other gadget
  drivers can be fixed up properly without breaking that driver), and we
  remove the old obsolete ub.c driver from the tree.

  There are also the usual XHCI set of updates, and other various driver
  changes and updates.  We also are trying hard to remove the old dbg()
  macro, but the final bits of that removal will be coming in through
  the networking tree before we can delete it for good.

  All of these patches have been in the linux-next tree.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

Fix up several annoying - but fairly mindless - conflicts due to the
termios structure having moved into the tty device, and often clashing
with dbg -> dev_dbg conversion.

* tag 'usb-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (339 commits)
  USB: ezusb: move ezusb.c from drivers/usb/serial to drivers/usb/misc
  USB: uas: fix gcc warning
  USB: uas: fix locking
  USB: Fix race condition when removing host controllers
  USB: uas: add locking
  USB: uas: fix abort
  USB: uas: remove aborted field, replace with status bit.
  USB: uas: fix task management
  USB: uas: keep track of command urbs
  xhci: Intel Panther Point BEI quirk.
  powerpc/usb: remove checking PHY_CLK_VALID for UTMI PHY
  USB: ftdi_sio: add TIAO USB Multi-Protocol Adapter (TUMPA) support
  Revert "usb : Add sysfs files to control port power."
  USB: serial: remove vizzini driver
  usb: host: xhci: Fix Null pointer dereferencing with 71c731a for non-x86 systems
  Increase XHCI suspend timeout to 16ms
  USB: ohci-at91: fix null pointer in ohci_hcd_at91_overcurrent_irq
  USB: sierra_ms: don't keep unused variable
  fsl/usb: Add support for USB controller version 2.4
  USB: qcaux: add Pantech vendor class match
  ...

1 files changed, 174 insertions, 40 deletions

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 128a804c42f..673ee469626 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -39,6 +39,13 @@
 #endif
 #endif
 
+struct usb_port {
+	struct usb_device *child;
+	struct device dev;
+	struct dev_state *port_owner;
+	enum usb_port_connect_type connect_type;
+};
+
 struct usb_hub {
 	struct device		*intfdev;	/* the "interface" device */
 	struct usb_device	*hdev;
@@ -83,7 +90,7 @@ struct usb_hub {
 	u8			indicator[USB_MAXCHILDREN];
 	struct delayed_work	leds;
 	struct delayed_work	init_work;
-	struct dev_state	**port_owners;
+	struct usb_port		**ports;
 };
 
 static inline int hub_is_superspeed(struct usb_device *hdev)
@@ -156,6 +163,8 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
 #define HUB_DEBOUNCE_STEP	  25
 #define HUB_DEBOUNCE_STABLE	 100
 
+#define to_usb_port(_dev) \
+	container_of(_dev, struct usb_port, dev)
 
 static int usb_reset_and_verify_device(struct usb_device *udev);
 
@@ -174,7 +183,7 @@ static inline char *portspeed(struct usb_hub *hub, int portstatus)
 /* Note that hdev or one of its children must be locked! */
 static struct usb_hub *hdev_to_hub(struct usb_device *hdev)
 {
-	if (!hdev || !hdev->actconfig)
+	if (!hdev || !hdev->actconfig || !hdev->maxchild)
 		return NULL;
 	return usb_get_intfdata(hdev->actconfig->interface[0]);
 }
@@ -869,8 +878,8 @@ static int hub_port_disable(struct usb_hub *hub, int port1, int set_state)
 	struct usb_device *hdev = hub->hdev;
 	int ret = 0;
 
-	if (hdev->children[port1-1] && set_state)
-		usb_set_device_state(hdev->children[port1-1],
+	if (hub->ports[port1 - 1]->child && set_state)
+		usb_set_device_state(hub->ports[port1 - 1]->child,
 				USB_STATE_NOTATTACHED);
 	if (!hub->error && !hub_is_superspeed(hub->hdev))
 		ret = clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE);
@@ -1026,7 +1035,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 	 * which ports need attention.
 	 */
 	for (port1 = 1; port1 <= hdev->maxchild; ++port1) {
-		struct usb_device *udev = hdev->children[port1-1];
+		struct usb_device *udev = hub->ports[port1 - 1]->child;
 		u16 portstatus, portchange;
 
 		portstatus = portchange = 0;
@@ -1191,8 +1200,8 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
 	if (type != HUB_SUSPEND) {
 		/* Disconnect all the children */
 		for (i = 0; i < hdev->maxchild; ++i) {
-			if (hdev->children[i])
-				usb_disconnect(&hdev->children[i]);
+			if (hub->ports[i]->child)
+				usb_disconnect(&hub->ports[i]->child);
 		}
 	}
 
@@ -1222,6 +1231,52 @@ static int hub_post_reset(struct usb_interface *intf)
 	return 0;
 }
 
+static void usb_port_device_release(struct device *dev)
+{
+	struct usb_port *port_dev = to_usb_port(dev);
+
+	kfree(port_dev);
+}
+
+static void usb_hub_remove_port_device(struct usb_hub *hub,
+				       int port1)
+{
+	device_unregister(&hub->ports[port1 - 1]->dev);
+}
+
+struct device_type usb_port_device_type = {
+	.name =		"usb_port",
+	.release =	usb_port_device_release,
+};
+
+static int usb_hub_create_port_device(struct usb_hub *hub,
+				      int port1)
+{
+	struct usb_port *port_dev = NULL;
+	int retval;
+
+	port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
+	if (!port_dev) {
+		retval = -ENOMEM;
+		goto exit;
+	}
+
+	hub->ports[port1 - 1] = port_dev;
+	port_dev->dev.parent = hub->intfdev;
+	port_dev->dev.type = &usb_port_device_type;
+	dev_set_name(&port_dev->dev, "port%d", port1);
+
+	retval = device_register(&port_dev->dev);
+	if (retval)
+		goto error_register;
+	return 0;
+
+error_register:
+	put_device(&port_dev->dev);
+exit:
+	return retval;
+}
+
 static int hub_configure(struct usb_hub *hub,
 	struct usb_endpoint_descriptor *endpoint)
 {
@@ -1231,7 +1286,7 @@ static int hub_configure(struct usb_hub *hub,
 	u16 hubstatus, hubchange;
 	u16 wHubCharacteristics;
 	unsigned int pipe;
-	int maxp, ret;
+	int maxp, ret, i;
 	char *message = "out of memory";
 
 	hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL);
@@ -1271,11 +1326,9 @@ static int hub_configure(struct usb_hub *hub,
 	dev_info (hub_dev, "%d port%s detected\n", hdev->maxchild,
 		(hdev->maxchild == 1) ? "" : "s");
 
-	hdev->children = kzalloc(hdev->maxchild *
-				sizeof(struct usb_device *), GFP_KERNEL);
-	hub->port_owners = kzalloc(hdev->maxchild * sizeof(struct dev_state *),
-				GFP_KERNEL);
-	if (!hdev->children || !hub->port_owners) {
+	hub->ports = kzalloc(hdev->maxchild * sizeof(struct usb_port *),
+			     GFP_KERNEL);
+	if (!hub->ports) {
 		ret = -ENOMEM;
 		goto fail;
 	}
@@ -1484,6 +1537,11 @@ static int hub_configure(struct usb_hub *hub,
 	if (hub->has_indicators && blinkenlights)
 		hub->indicator [0] = INDICATOR_CYCLE;
 
+	for (i = 0; i < hdev->maxchild; i++)
+		if (usb_hub_create_port_device(hub, i + 1) < 0)
+			dev_err(hub->intfdev,
+				"couldn't create port%d device.\n", i + 1);
+
 	hub_activate(hub, HUB_INIT);
 	return 0;
 
@@ -1508,6 +1566,7 @@ static void hub_disconnect(struct usb_interface *intf)
 {
 	struct usb_hub *hub = usb_get_intfdata(intf);
 	struct usb_device *hdev = interface_to_usbdev(intf);
+	int i;
 
 	/* Take the hub off the event list and don't let it be added again */
 	spin_lock_irq(&hub_event_lock);
@@ -1523,14 +1582,16 @@ static void hub_disconnect(struct usb_interface *intf)
 	hub_quiesce(hub, HUB_DISCONNECT);
 
 	usb_set_intfdata (intf, NULL);
+
+	for (i = 0; i < hdev->maxchild; i++)
+		usb_hub_remove_port_device(hub, i + 1);
 	hub->hdev->maxchild = 0;
 
 	if (hub->hdev->speed == USB_SPEED_HIGH)
 		highspeed_hubs--;
 
 	usb_free_urb(hub->urb);
-	kfree(hdev->children);
-	kfree(hub->port_owners);
+	kfree(hub->ports);
 	kfree(hub->descriptor);
 	kfree(hub->status);
 	kfree(hub->buffer);
@@ -1617,6 +1678,7 @@ static int
 hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data)
 {
 	struct usb_device *hdev = interface_to_usbdev (intf);
+	struct usb_hub *hub = hdev_to_hub(hdev);
 
 	/* assert ifno == 0 (part of hub spec) */
 	switch (code) {
@@ -1630,11 +1692,11 @@ hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data)
 		else {
 			info->nports = hdev->maxchild;
 			for (i = 0; i < info->nports; i++) {
-				if (hdev->children[i] == NULL)
+				if (hub->ports[i]->child == NULL)
 					info->port[i] = 0;
 				else
 					info->port[i] =
-						hdev->children[i]->devnum;
+						hub->ports[i]->child->devnum;
 			}
 		}
 		spin_unlock_irq(&device_state_lock);
@@ -1662,7 +1724,7 @@ static int find_port_owner(struct usb_device *hdev, unsigned port1,
 	/* This assumes that devices not managed by the hub driver
 	 * will always have maxchild equal to 0.
 	 */
-	*ppowner = &(hdev_to_hub(hdev)->port_owners[port1 - 1]);
+	*ppowner = &(hdev_to_hub(hdev)->ports[port1 - 1]->port_owner);
 	return 0;
 }
 
@@ -1699,16 +1761,14 @@ int usb_hub_release_port(struct usb_device *hdev, unsigned port1,
 
 void usb_hub_release_all_ports(struct usb_device *hdev, struct dev_state *owner)
 {
+	struct usb_hub *hub = hdev_to_hub(hdev);
 	int n;
-	struct dev_state **powner;
 
-	n = find_port_owner(hdev, 1, &powner);
-	if (n == 0) {
-		for (; n < hdev->maxchild; (++n, ++powner)) {
-			if (*powner == owner)
-				*powner = NULL;
-		}
+	for (n = 0; n < hdev->maxchild; n++) {
+		if (hub->ports[n]->port_owner == owner)
+			hub->ports[n]->port_owner = NULL;
 	}
+
 }
 
 /* The caller must hold udev's lock */
@@ -1719,17 +1779,17 @@ bool usb_device_is_owned(struct usb_device *udev)
 	if (udev->state == USB_STATE_NOTATTACHED || !udev->parent)
 		return false;
 	hub = hdev_to_hub(udev->parent);
-	return !!hub->port_owners[udev->portnum - 1];
+	return !!hub->ports[udev->portnum - 1]->port_owner;
 }
 
-
 static void recursively_mark_NOTATTACHED(struct usb_device *udev)
 {
+	struct usb_hub *hub = hdev_to_hub(udev);
 	int i;
 
 	for (i = 0; i < udev->maxchild; ++i) {
-		if (udev->children[i])
-			recursively_mark_NOTATTACHED(udev->children[i]);
+		if (hub->ports[i]->child)
+			recursively_mark_NOTATTACHED(hub->ports[i]->child);
 	}
 	if (udev->state == USB_STATE_SUSPENDED)
 		udev->active_duration -= jiffies;
@@ -1893,6 +1953,7 @@ static void hub_free_dev(struct usb_device *udev)
 void usb_disconnect(struct usb_device **pdev)
 {
 	struct usb_device	*udev = *pdev;
+	struct usb_hub		*hub = hdev_to_hub(udev);
 	int			i;
 
 	/* mark the device as inactive, so any further urb submissions for
@@ -1907,8 +1968,8 @@ void usb_disconnect(struct usb_device **pdev)
 
 	/* Free up all the children before we remove this device */
 	for (i = 0; i < udev->maxchild; i++) {
-		if (udev->children[i])
-			usb_disconnect(&udev->children[i]);
+		if (hub->ports[i]->child)
+			usb_disconnect(&hub->ports[i]->child);
 	}
 
 	/* deallocate hcd/hardware state ... nuking all pending urbs and
@@ -2113,7 +2174,8 @@ static void set_usb_port_removable(struct usb_device *udev)
 		return;
 
 	if (hub_is_superspeed(hdev)) {
-		if (hub->descriptor->u.ss.DeviceRemovable & (1 << port))
+		if (le16_to_cpu(hub->descriptor->u.ss.DeviceRemovable)
+				& (1 << port))
 			removable = false;
 	} else {
 		if (hub->descriptor->u.hs.DeviceRemovable[port / 8] & (1 << (port % 8)))
@@ -3072,7 +3134,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
 	for (port1 = 1; port1 <= hdev->maxchild; port1++) {
 		struct usb_device	*udev;
 
-		udev = hdev->children [port1-1];
+		udev = hub->ports[port1 - 1]->child;
 		if (udev && udev->can_submit) {
 			dev_warn(&intf->dev, "port %d nyet suspended\n", port1);
 			if (PMSG_IS_AUTO(msg))
@@ -3999,7 +4061,7 @@ hub_power_remaining (struct usb_hub *hub)
 
 	remaining = hdev->bus_mA - hub->descriptor->bHubContrCurrent;
 	for (port1 = 1; port1 <= hdev->maxchild; ++port1) {
-		struct usb_device	*udev = hdev->children[port1 - 1];
+		struct usb_device	*udev = hub->ports[port1 - 1]->child;
 		int			delta;
 
 		if (!udev)
@@ -4063,7 +4125,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 #endif
 
 	/* Try to resuscitate an existing device */
-	udev = hdev->children[port1-1];
+	udev = hub->ports[port1 - 1]->child;
 	if ((portstatus & USB_PORT_STAT_CONNECTION) && udev &&
 			udev->state != USB_STATE_NOTATTACHED) {
 		usb_lock_device(udev);
@@ -4092,7 +4154,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 
 	/* Disconnect any existing devices under this port */
 	if (udev)
-		usb_disconnect(&hdev->children[port1-1]);
+		usb_disconnect(&hub->ports[port1 - 1]->child);
 	clear_bit(port1, hub->change_bits);
 
 	/* We can forget about a "removed" device when there's a physical
@@ -4228,7 +4290,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 		if (hdev->state == USB_STATE_NOTATTACHED)
 			status = -ENOTCONN;
 		else
-			hdev->children[port1-1] = udev;
+			hub->ports[port1 - 1]->child = udev;
 		spin_unlock_irq(&device_state_lock);
 
 		/* Run it through the hoops (find a driver, etc) */
@@ -4236,7 +4298,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
 			status = usb_new_device(udev);
 			if (status) {
 				spin_lock_irq(&device_state_lock);
-				hdev->children[port1-1] = NULL;
+				hub->ports[port1 - 1]->child = NULL;
 				spin_unlock_irq(&device_state_lock);
 			}
 		}
@@ -4282,7 +4344,7 @@ static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port,
 	int ret;
 
 	hdev = hub->hdev;
-	udev = hdev->children[port-1];
+	udev = hub->ports[port - 1]->child;
 	if (!hub_is_superspeed(hdev)) {
 		if (!(portchange & USB_PORT_STAT_C_SUSPEND))
 			return 0;
@@ -4436,7 +4498,7 @@ static void hub_events(void)
 				 */
 				if (!(portstatus & USB_PORT_STAT_ENABLE)
 				    && !connect_change
-				    && hdev->children[i-1]) {
+				    && hub->ports[i - 1]->child) {
 					dev_err (hub_dev,
 					    "port %i "
 					    "disabled by hub (EMI?), "
@@ -4993,3 +5055,75 @@ void usb_queue_reset_device(struct usb_interface *iface)
 	schedule_work(&iface->reset_ws);
 }
 EXPORT_SYMBOL_GPL(usb_queue_reset_device);
+
+/**
+ * usb_hub_find_child - Get the pointer of child device
+ * attached to the port which is specified by @port1.
+ * @hdev: USB device belonging to the usb hub
+ * @port1: port num to indicate which port the child device
+ *	is attached to.
+ *
+ * USB drivers call this function to get hub's child device
+ * pointer.
+ *
+ * Return NULL if input param is invalid and
+ * child's usb_device pointer if non-NULL.
+ */
+struct usb_device *usb_hub_find_child(struct usb_device *hdev,
+		int port1)
+{
+	struct usb_hub *hub = hdev_to_hub(hdev);
+
+	if (port1 < 1 || port1 > hdev->maxchild)
+		return NULL;
+	return hub->ports[port1 - 1]->child;
+}
+EXPORT_SYMBOL_GPL(usb_hub_find_child);
+
+/**
+ * usb_set_hub_port_connect_type - set hub port connect type.
+ * @hdev: USB device belonging to the usb hub
+ * @port1: port num of the port
+ * @type: connect type of the port
+ */
+void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1,
+	enum usb_port_connect_type type)
+{
+	struct usb_hub *hub = hdev_to_hub(hdev);
+
+	hub->ports[port1 - 1]->connect_type = type;
+}
+
+/**
+ * usb_get_hub_port_connect_type - Get the port's connect type
+ * @hdev: USB device belonging to the usb hub
+ * @port1: port num of the port
+ *
+ * Return connect type of the port and if input params are
+ * invalid, return USB_PORT_CONNECT_TYPE_UNKNOWN.
+ */
+enum usb_port_connect_type
+usb_get_hub_port_connect_type(struct usb_device *hdev, int port1)
+{
+	struct usb_hub *hub = hdev_to_hub(hdev);
+
+	return hub->ports[port1 - 1]->connect_type;
+}
+
+#ifdef CONFIG_ACPI
+/**
+ * usb_get_hub_port_acpi_handle - Get the usb port's acpi handle
+ * @hdev: USB device belonging to the usb hub
+ * @port1: port num of the port
+ *
+ * Return port's acpi handle if successful, NULL if params are
+ * invaild.
+ */
+acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
+	int port1)
+{
+	struct usb_hub *hub = hdev_to_hub(hdev);
+
+	return DEVICE_ACPI_HANDLE(&hub->ports[port1 - 1]->dev);
+}
+#endif