Merge tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY updates from Greg KH:
 "Here is the big USB/PHY driver pull request for 5.1-rc1.

  The usual set of gadget driver updates, phy driver updates, xhci
  updates, and typec additions. Also included in here are a lot of small
  cleanups and fixes and driver updates where needed.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits)
  wusb: Remove unnecessary static function ckhdid_printf
  usb: core: make default autosuspend delay configurable
  usb: core: Fix typo in description of "authorized_default"
  usb: chipidea: Refactor USB PHY selection and keep a single PHY
  usb: chipidea: Grab the (legacy) USB PHY by phandle first
  usb: chipidea: imx: set power polarity
  dt-bindings: usb: ci-hdrc-usb2: add property power-active-high
  usb: chipidea: imx: remove unused header files
  usb: chipidea: tegra: Fix missed ci_hdrc_remove_device()
  usb: core: add option of only authorizing internal devices
  usb: typec: tps6598x: handle block writes separately with plain-I2C adapters
  usb: xhci: Fix for Enabling USB ROLE SWITCH QUIRK on INTEL_SUNRISEPOINT_LP_XHCI
  usb: xhci: fix build warning - missing prototype
  usb: xhci: dbc: Fixing typo error.
  usb: xhci: remove unused member 'parent' in xhci_regset struct
  xhci: tegra: Prevent error pointer dereference
  USB: serial: option: add Telit ME910 ECM composition
  usb: core: Replace hardcoded check with inline function from usb.h
  usb: core: skip interfaces disabled in devicetree
  usb: typec: mux: remove redundant check on variable match
  ...

15 files changed, 234 insertions, 91 deletions

diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 4d75d9a80001..bdb6bd0b63a6 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # USB Core configuration
 #
@@ -90,3 +91,15 @@ config USB_LEDS_TRIGGER_USBPORT
 	  This driver allows LEDs to be controlled by USB events. Enabling this
 	  trigger allows specifying list of USB ports that should turn on LED
 	  when some USB device gets connected.
+
+config USB_AUTOSUSPEND_DELAY
+	int "Default autosuspend delay"
+	depends on USB
+	default 2
+	help
+	  The default autosuspend delay in seconds.  Can be overridden
+	  with the usbcore.autosuspend command line or module parameter.
+
+	  The default value Linux has always had is 2 seconds.  Change
+	  this value if you want a different delay and cannot modify
+	  the command line or module parameter.
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 7b5cb28ffb35..20ff036b4c22 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -552,7 +552,7 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx,
 	unsigned char *buffer2;
 	int size2;
 	struct usb_descriptor_header *header;
-	int len, retval;
+	int retval;
 	u8 inums[USB_MAXINTERFACES], nalts[USB_MAXINTERFACES];
 	unsigned iad_num = 0;
 
@@ -707,8 +707,8 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx,
 			nalts[i] = j = USB_MAXALTSETTING;
 		}
 
-		len = sizeof(*intfc) + sizeof(struct usb_host_interface) * j;
-		config->intf_cache[i] = intfc = kzalloc(len, GFP_KERNEL);
+		intfc = kzalloc(struct_size(intfc, altsetting, j), GFP_KERNEL);
+		config->intf_cache[i] = intfc;
 		if (!intfc)
 			return -ENOMEM;
 		kref_init(&intfc->ref);
@@ -800,13 +800,11 @@ int usb_get_configuration(struct usb_device *dev)
 {
 	struct device *ddev = &dev->dev;
 	int ncfg = dev->descriptor.bNumConfigurations;
-	int result = 0;
+	int result = -ENOMEM;
 	unsigned int cfgno, length;
 	unsigned char *bigbuffer;
 	struct usb_config_descriptor *desc;
 
-	cfgno = 0;
-	result = -ENOMEM;
 	if (ncfg > USB_MAXCONFIG) {
 		dev_warn(ddev, "too many configurations: %d, "
 		    "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG);
@@ -832,8 +830,7 @@ int usb_get_configuration(struct usb_device *dev)
 	if (!desc)
 		goto err2;
 
-	result = 0;
-	for (; cfgno < ncfg; cfgno++) {
+	for (cfgno = 0; cfgno < ncfg; cfgno++) {
 		/* We grab just the first descriptor so we know how long
 		 * the whole configuration is */
 		result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno,
@@ -889,7 +886,6 @@ int usb_get_configuration(struct usb_device *dev)
 			goto err;
 		}
 	}
-	result = 0;
 
 err:
 	kfree(desc);
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index d65566341dd1..fa783531ee88 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -604,7 +604,7 @@ static void async_completed(struct urb *urb)
 	snoop(&urb->dev->dev, "urb complete\n");
 	snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
 			as->status, COMPLETE, NULL, 0);
-	if ((urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN)
+	if (usb_urb_dir_in(urb))
 		snoop_urb_data(urb, urb->actual_length);
 
 	if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
@@ -1564,12 +1564,10 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
 		}
 		for (totlen = u = 0; u < number_of_packets; u++) {
 			/*
-			 * arbitrary limit need for USB 3.0
-			 * bMaxBurst (0~15 allowed, 1~16 packets)
-			 * bmAttributes (bit 1:0, mult 0~2, 1~3 packets)
-			 * sizemax: 1024 * 16 * 3 = 49152
+			 * arbitrary limit need for USB 3.1 Gen2
+			 * sizemax: 96 DPs at SSP, 96 * 1024 = 98304
 			 */
-			if (isopkt[u].length > 49152) {
+			if (isopkt[u].length > 98304) {
 				ret = -EINVAL;
 				goto error;
 			}
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 53564386ed57..8987cec9549d 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1896,14 +1896,11 @@ int usb_runtime_idle(struct device *dev)
 	return -EBUSY;
 }
 
-int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 {
 	struct usb_hcd *hcd = bus_to_hcd(udev->bus);
 	int ret = -EPERM;
 
-	if (enable && !udev->usb2_hw_lpm_allowed)
-		return 0;
-
 	if (hcd->driver->set_usb2_hw_lpm) {
 		ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, enable);
 		if (!ret)
@@ -1913,6 +1910,24 @@ int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 	return ret;
 }
 
+int usb_enable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	if (!udev->usb2_hw_lpm_capable ||
+	    !udev->usb2_hw_lpm_allowed ||
+	    udev->usb2_hw_lpm_enabled)
+		return 0;
+
+	return usb_set_usb2_hardware_lpm(udev, 1);
+}
+
+int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	if (!udev->usb2_hw_lpm_enabled)
+		return 0;
+
+	return usb_set_usb2_hardware_lpm(udev, 0);
+}
+
 #endif /* CONFIG_PM */
 
 struct bus_type usb_bus_type = {
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index f713cecc1f41..1ac9c1e5f773 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -118,6 +118,31 @@ int usb_choose_configuration(struct usb_device *udev)
 			continue;
 		}
 
+		/*
+		 * Select first configuration as default for audio so that
+		 * devices that don't comply with UAC3 protocol are supported.
+		 * But, still iterate through other configurations and
+		 * select UAC3 compliant config if present.
+		 */
+		if (desc && is_audio(desc)) {
+			/* Always prefer the first found UAC3 config */
+			if (is_uac3_config(desc)) {
+				best = c;
+				break;
+			}
+
+			/* If there is no UAC3 config, prefer the first config */
+			else if (i == 0)
+				best = c;
+
+			/* Unconditional continue, because the rest of the code
+			 * in the loop is irrelevant for audio devices, and
+			 * because it can reassign best, which for audio devices
+			 * we don't want.
+			 */
+			continue;
+		}
+
 		/* When the first config's first interface is one of Microsoft's
 		 * pet nonstandard Ethernet-over-USB protocols, ignore it unless
 		 * this kernel has enabled the necessary host side driver.
@@ -132,25 +157,6 @@ int usb_choose_configuration(struct usb_device *udev)
 #endif
 		}
 
-		/*
-		 * Select first configuration as default for audio so that
-		 * devices that don't comply with UAC3 protocol are supported.
-		 * But, still iterate through other configurations and
-		 * select UAC3 compliant config if present.
-		 */
-		if (i == 0 && num_configs > 1 && desc && is_audio(desc)) {
-			best = c;
-			continue;
-		}
-
-		if (i > 0 && desc && is_audio(desc)) {
-			if (is_uac3_config(desc)) {
-				best = c;
-				break;
-			}
-			continue;
-		}
-
 		/* From the remaining configs, choose the first one whose
 		 * first interface is for a non-vendor-specific class.
 		 * Reason: Linux is more likely to have a class driver
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 015b126ce455..3189181bb628 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -373,13 +373,19 @@ static const u8 ss_rh_config_descriptor[] = {
  * -1 is authorized for all devices except wireless (old behaviour)
  * 0 is unauthorized for all devices
  * 1 is authorized for all devices
+ * 2 is authorized for internal devices
  */
-static int authorized_default = -1;
+#define USB_AUTHORIZE_WIRED	-1
+#define USB_AUTHORIZE_NONE	0
+#define USB_AUTHORIZE_ALL	1
+#define USB_AUTHORIZE_INTERNAL	2
+
+static int authorized_default = USB_AUTHORIZE_WIRED;
 module_param(authorized_default, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(authorized_default,
 		"Default USB device authorization: 0 is not authorized, 1 is "
-		"authorized, -1 is authorized except for wireless USB (default, "
-		"old behaviour");
+		"authorized, 2 is authorized for internal devices, -1 is "
+		"authorized except for wireless USB (default, old behaviour)");
 /*-------------------------------------------------------------------------*/
 
 /**
@@ -884,7 +890,7 @@ static ssize_t authorized_default_show(struct device *dev,
 	struct usb_hcd *hcd;
 
 	hcd = bus_to_hcd(usb_bus);
-	return snprintf(buf, PAGE_SIZE, "%u\n", !!HCD_DEV_AUTHORIZED(hcd));
+	return snprintf(buf, PAGE_SIZE, "%u\n", hcd->dev_policy);
 }
 
 static ssize_t authorized_default_store(struct device *dev,
@@ -900,11 +906,8 @@ static ssize_t authorized_default_store(struct device *dev,
 	hcd = bus_to_hcd(usb_bus);
 	result = sscanf(buf, "%u\n", &val);
 	if (result == 1) {
-		if (val)
-			set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
-		else
-			clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
-
+		hcd->dev_policy = val <= USB_DEVICE_AUTHORIZE_INTERNAL ?
+			val : USB_DEVICE_AUTHORIZE_ALL;
 		result = size;
 	} else {
 		result = -EINVAL;
@@ -2736,6 +2739,11 @@ int usb_add_hcd(struct usb_hcd *hcd,
 		if (retval)
 			return retval;
 
+		retval = usb_phy_roothub_set_mode(hcd->phy_roothub,
+						  PHY_MODE_USB_HOST_SS);
+		if (retval)
+			goto err_usb_phy_roothub_power_on;
+
 		retval = usb_phy_roothub_power_on(hcd->phy_roothub);
 		if (retval)
 			goto err_usb_phy_roothub_power_on;
@@ -2743,18 +2751,26 @@ int usb_add_hcd(struct usb_hcd *hcd,
 
 	dev_info(hcd->self.controller, "%s\n", hcd->product_desc);
 
-	/* Keep old behaviour if authorized_default is not in [0, 1]. */
-	if (authorized_default < 0 || authorized_default > 1) {
-		if (hcd->wireless)
-			clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
-		else
-			set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
-	} else {
-		if (authorized_default)
-			set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
-		else
-			clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags);
+	switch (authorized_default) {
+	case USB_AUTHORIZE_NONE:
+		hcd->dev_policy = USB_DEVICE_AUTHORIZE_NONE;
+		break;
+
+	case USB_AUTHORIZE_ALL:
+		hcd->dev_policy = USB_DEVICE_AUTHORIZE_ALL;
+		break;
+
+	case USB_AUTHORIZE_INTERNAL:
+		hcd->dev_policy = USB_DEVICE_AUTHORIZE_INTERNAL;
+		break;
+
+	case USB_AUTHORIZE_WIRED:
+	default:
+		hcd->dev_policy = hcd->wireless ?
+			USB_DEVICE_AUTHORIZE_NONE : USB_DEVICE_AUTHORIZE_ALL;
+		break;
 	}
+
 	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 
 	/* per default all interfaces are authorized */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1d1e61e980f3..8d4631c81b9f 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -108,6 +108,8 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
 static void hub_release(struct kref *kref);
 static int usb_reset_and_verify_device(struct usb_device *udev);
 static int hub_port_disable(struct usb_hub *hub, int port1, int set_state);
+static bool hub_port_warm_reset_required(struct usb_hub *hub, int port1,
+		u16 portstatus);
 
 static inline char *portspeed(struct usb_hub *hub, int portstatus)
 {
@@ -607,6 +609,36 @@ static int hub_port_status(struct usb_hub *hub, int port1,
 				   status, change, NULL);
 }
 
+static void hub_resubmit_irq_urb(struct usb_hub *hub)
+{
+	unsigned long flags;
+	int status;
+
+	spin_lock_irqsave(&hub->irq_urb_lock, flags);
+
+	if (hub->quiescing) {
+		spin_unlock_irqrestore(&hub->irq_urb_lock, flags);
+		return;
+	}
+
+	status = usb_submit_urb(hub->urb, GFP_ATOMIC);
+	if (status && status != -ENODEV && status != -EPERM &&
+	    status != -ESHUTDOWN) {
+		dev_err(hub->intfdev, "resubmit --> %d\n", status);
+		mod_timer(&hub->irq_urb_retry, jiffies + HZ);
+	}
+
+	spin_unlock_irqrestore(&hub->irq_urb_lock, flags);
+}
+
+static void hub_retry_irq_urb(struct timer_list *t)
+{
+	struct usb_hub *hub = from_timer(hub, t, irq_urb_retry);
+
+	hub_resubmit_irq_urb(hub);
+}
+
+
 static void kick_hub_wq(struct usb_hub *hub)
 {
 	struct usb_interface *intf;
@@ -709,12 +741,7 @@ static void hub_irq(struct urb *urb)
 	kick_hub_wq(hub);
 
 resubmit:
-	if (hub->quiescing)
-		return;
-
-	status = usb_submit_urb(hub->urb, GFP_ATOMIC);
-	if (status != 0 && status != -ENODEV && status != -EPERM)
-		dev_err(hub->intfdev, "resubmit --> %d\n", status);
+	hub_resubmit_irq_urb(hub);
 }
 
 /* USB 2.0 spec Section 11.24.2.3 */
@@ -1112,6 +1139,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 						   USB_PORT_FEAT_ENABLE);
 		}
 
+		/* Make sure a warm-reset request is handled by port_event */
+		if (type == HUB_RESUME &&
+		    hub_port_warm_reset_required(hub, port1, portstatus))
+			set_bit(port1, hub->event_bits);
+
 		/*
 		 * Add debounce if USB3 link is in polling/link training state.
 		 * Link will automatically transition to Enabled state after
@@ -1264,10 +1296,13 @@ enum hub_quiescing_type {
 static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
 {
 	struct usb_device *hdev = hub->hdev;
+	unsigned long flags;
 	int i;
 
 	/* hub_wq and related activity won't re-trigger */
+	spin_lock_irqsave(&hub->irq_urb_lock, flags);
 	hub->quiescing = 1;
+	spin_unlock_irqrestore(&hub->irq_urb_lock, flags);
 
 	if (type != HUB_SUSPEND) {
 		/* Disconnect all the children */
@@ -1278,6 +1313,7 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
 	}
 
 	/* Stop hub_wq and related activity */
+	del_timer_sync(&hub->irq_urb_retry);
 	usb_kill_urb(hub->urb);
 	if (hub->has_indicators)
 		cancel_delayed_work_sync(&hub->leds);
@@ -1810,6 +1846,8 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	INIT_DELAYED_WORK(&hub->leds, led_work);
 	INIT_DELAYED_WORK(&hub->init_work, NULL);
 	INIT_WORK(&hub->events, hub_event);
+	spin_lock_init(&hub->irq_urb_lock);
+	timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0);
 	usb_get_intf(intf);
 	usb_get_dev(hdev);
 
@@ -3220,8 +3258,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 	}
 
 	/* disable USB2 hardware LPM */
-	if (udev->usb2_hw_lpm_enabled == 1)
-		usb_set_usb2_hardware_lpm(udev, 0);
+	usb_disable_usb2_hardware_lpm(udev);
 
 	if (usb_disable_ltm(udev)) {
 		dev_err(&udev->dev, "Failed to disable LTM before suspend\n");
@@ -3259,8 +3296,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 		usb_enable_ltm(udev);
  err_ltm:
 		/* Try to enable USB2 hardware LPM again */
-		if (udev->usb2_hw_lpm_capable == 1)
-			usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 
 		if (udev->do_remote_wakeup)
 			(void) usb_disable_remote_wakeup(udev);
@@ -3543,8 +3579,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
 		hub_port_logical_disconnect(hub, port1);
 	} else  {
 		/* Try to enable USB2 hardware LPM */
-		if (udev->usb2_hw_lpm_capable == 1)
-			usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 
 		/* Try to enable USB3 LTM */
 		usb_enable_ltm(udev);
@@ -4435,7 +4470,7 @@ static void hub_set_initial_usb2_lpm_policy(struct usb_device *udev)
 	if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) ||
 			connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) {
 		udev->usb2_hw_lpm_allowed = 1;
-		usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 	}
 }
 
@@ -5649,8 +5684,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 	/* Disable USB2 hardware LPM.
 	 * It will be re-enabled by the enumeration process.
 	 */
-	if (udev->usb2_hw_lpm_enabled == 1)
-		usb_set_usb2_hardware_lpm(udev, 0);
+	usb_disable_usb2_hardware_lpm(udev);
 
 	/* Disable LPM while we reset the device and reinstall the alt settings.
 	 * Device-initiated LPM, and system exit latency settings are cleared
@@ -5753,7 +5787,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 
 done:
 	/* Now that the alt settings are re-installed, enable LTM and LPM. */
-	usb_set_usb2_hardware_lpm(udev, 1);
+	usb_enable_usb2_hardware_lpm(udev);
 	usb_unlocked_enable_lpm(udev);
 	usb_enable_ltm(udev);
 	usb_release_bos_descriptor(udev);
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 4accfb63f7dc..a9e24e4b8df1 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -69,6 +69,8 @@ struct usb_hub {
 	struct delayed_work	leds;
 	struct delayed_work	init_work;
 	struct work_struct      events;
+	spinlock_t		irq_urb_lock;
+	struct timer_list	irq_urb_retry;
 	struct usb_port		**ports;
 };
 
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index bfa5eda0cc26..82239f27c4cc 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1243,8 +1243,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
 			dev->actconfig->interface[i] = NULL;
 		}
 
-		if (dev->usb2_hw_lpm_enabled == 1)
-			usb_set_usb2_hardware_lpm(dev, 0);
+		usb_disable_usb2_hardware_lpm(dev);
 		usb_unlocked_disable_lpm(dev);
 		usb_disable_ltm(dev);
 
@@ -2007,6 +2006,13 @@ free_interfaces:
 	for (i = 0; i < nintf; ++i) {
 		struct usb_interface *intf = cp->interface[i];
 
+		if (intf->dev.of_node &&
+		    !of_device_is_available(intf->dev.of_node)) {
+			dev_info(&dev->dev, "skipping disabled interface %d\n",
+				 intf->cur_altsetting->desc.bInterfaceNumber);
+			continue;
+		}
+
 		dev_dbg(&dev->dev,
 			"adding %s (config #%d, interface %d)\n",
 			dev_name(&intf->dev), configuration,
diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c
index 38b2c776c4b4..7580493b867a 100644
--- a/drivers/usb/core/phy.c
+++ b/drivers/usb/core/phy.c
@@ -123,6 +123,34 @@ int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub)
 }
 EXPORT_SYMBOL_GPL(usb_phy_roothub_exit);
 
+int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub,
+			     enum phy_mode mode)
+{
+	struct usb_phy_roothub *roothub_entry;
+	struct list_head *head;
+	int err;
+
+	if (!phy_roothub)
+		return 0;
+
+	head = &phy_roothub->list;
+
+	list_for_each_entry(roothub_entry, head, list) {
+		err = phy_set_mode(roothub_entry->phy, mode);
+		if (err)
+			goto err_out;
+	}
+
+	return 0;
+
+err_out:
+	list_for_each_entry_continue_reverse(roothub_entry, head, list)
+		phy_power_off(roothub_entry->phy);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_set_mode);
+
 int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub)
 {
 	struct usb_phy_roothub *roothub_entry;
diff --git a/drivers/usb/core/phy.h b/drivers/usb/core/phy.h
index 88a3c037e9df..dad564e2d2d4 100644
--- a/drivers/usb/core/phy.h
+++ b/drivers/usb/core/phy.h
@@ -16,6 +16,8 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev);
 int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub);
 int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
 
+int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub,
+			     enum phy_mode mode);
 int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub);
 void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub);
 
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index ea18284dfa9a..7e88fdfe3cf5 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -528,7 +528,10 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev,
 
 	if (!ret) {
 		udev->usb2_hw_lpm_allowed = value;
-		ret = usb_set_usb2_hardware_lpm(udev, value);
+		if (value)
+			ret = usb_enable_usb2_hardware_lpm(udev);
+		else
+			ret = usb_disable_usb2_hardware_lpm(udev);
 	}
 
 	usb_unlock_device(udev);
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index f51750bcd152..0eab79f82ce4 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -70,9 +70,8 @@ struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags)
 {
 	struct urb *urb;
 
-	urb = kmalloc(sizeof(struct urb) +
-		iso_packets * sizeof(struct usb_iso_packet_descriptor),
-		mem_flags);
+	urb = kmalloc(struct_size(urb, iso_frame_desc, iso_packets),
+		      mem_flags);
 	if (!urb)
 		return NULL;
 	usb_init_urb(urb);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 4ebfbd737905..7fcb9f782931 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -46,8 +46,7 @@
 #include <linux/mm.h>
 #include <linux/dma-mapping.h>
 
-#include "usb.h"
-
+#include "hub.h"
 
 const char *usbcore_name = "usbcore";
 
@@ -65,8 +64,8 @@ int usb_disabled(void)
 EXPORT_SYMBOL_GPL(usb_disabled);
 
 #ifdef	CONFIG_PM
-static int usb_autosuspend_delay = 2;		/* Default delay value,
-						 * in seconds */
+/* Default delay value, in seconds */
+static int usb_autosuspend_delay = CONFIG_USB_AUTOSUSPEND_DELAY;
 module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
 MODULE_PARM_DESC(autosuspend, "default autosuspend delay");
 
@@ -536,6 +535,27 @@ static unsigned usb_bus_is_wusb(struct usb_bus *bus)
 	return hcd->wireless;
 }
 
+static bool usb_dev_authorized(struct usb_device *dev, struct usb_hcd *hcd)
+{
+	struct usb_hub *hub;
+
+	if (!dev->parent)
+		return true; /* Root hub always ok [and always wired] */
+
+	switch (hcd->dev_policy) {
+	case USB_DEVICE_AUTHORIZE_NONE:
+	default:
+		return false;
+
+	case USB_DEVICE_AUTHORIZE_ALL:
+		return true;
+
+	case USB_DEVICE_AUTHORIZE_INTERNAL:
+		hub = usb_hub_to_struct_hub(dev->parent);
+		return hub->ports[dev->portnum - 1]->connect_type ==
+				USB_PORT_CONNECT_TYPE_HARD_WIRED;
+	}
+}
 
 /**
  * usb_alloc_dev - usb device constructor (usbcore-internal)
@@ -663,12 +683,11 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
 	dev->connect_time = jiffies;
 	dev->active_duration = -jiffies;
 #endif
-	if (root_hub)	/* Root hub always ok [and always wired] */
-		dev->authorized = 1;
-	else {
-		dev->authorized = !!HCD_DEV_AUTHORIZED(usb_hcd);
+
+	dev->authorized = usb_dev_authorized(dev, usb_hcd);
+	if (!root_hub)
 		dev->wusb = usb_bus_is_wusb(bus) ? 1 : 0;
-	}
+
 	return dev;
 }
 EXPORT_SYMBOL_GPL(usb_alloc_dev);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 546a2219454b..d95a5358f73d 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -92,7 +92,8 @@ extern int usb_remote_wakeup(struct usb_device *dev);
 extern int usb_runtime_suspend(struct device *dev);
 extern int usb_runtime_resume(struct device *dev);
 extern int usb_runtime_idle(struct device *dev);
-extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
+extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev);
+extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev);
 
 #else
 
@@ -112,7 +113,12 @@ static inline int usb_autoresume_device(struct usb_device *udev)
 	return 0;
 }
 
-static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	return 0;
+}
+
+static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
 {
 	return 0;
 }