1 files changed, 2 insertions, 125 deletions

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 9320787ac2e6..8592c0344fe8 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -103,11 +103,6 @@ static DEFINE_SPINLOCK(hcd_urb_unlink_lock);
 /* wait queue for synchronous unlinks */
 DECLARE_WAIT_QUEUE_HEAD(usb_kill_urb_queue);
 
-static inline int is_root_hub(struct usb_device *udev)
-{
-	return (udev->parent == NULL);
-}
-
 /*-------------------------------------------------------------------------*/
 
 /*
@@ -880,101 +875,6 @@ static int usb_rh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 }
 
 
-
-/*
- * Show & store the current value of authorized_default
- */
-static ssize_t authorized_default_show(struct device *dev,
-				       struct device_attribute *attr, char *buf)
-{
-	struct usb_device *rh_usb_dev = to_usb_device(dev);
-	struct usb_bus *usb_bus = rh_usb_dev->bus;
-	struct usb_hcd *hcd;
-
-	hcd = bus_to_hcd(usb_bus);
-	return snprintf(buf, PAGE_SIZE, "%u\n", hcd->dev_policy);
-}
-
-static ssize_t authorized_default_store(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t size)
-{
-	ssize_t result;
-	unsigned val;
-	struct usb_device *rh_usb_dev = to_usb_device(dev);
-	struct usb_bus *usb_bus = rh_usb_dev->bus;
-	struct usb_hcd *hcd;
-
-	hcd = bus_to_hcd(usb_bus);
-	result = sscanf(buf, "%u\n", &val);
-	if (result == 1) {
-		hcd->dev_policy = val <= USB_DEVICE_AUTHORIZE_INTERNAL ?
-			val : USB_DEVICE_AUTHORIZE_ALL;
-		result = size;
-	} else {
-		result = -EINVAL;
-	}
-	return result;
-}
-static DEVICE_ATTR_RW(authorized_default);
-
-/*
- * interface_authorized_default_show - show default authorization status
- * for USB interfaces
- *
- * note: interface_authorized_default is the default value
- *       for initializing the authorized attribute of interfaces
- */
-static ssize_t interface_authorized_default_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct usb_device *usb_dev = to_usb_device(dev);
-	struct usb_hcd *hcd = bus_to_hcd(usb_dev->bus);
-
-	return sprintf(buf, "%u\n", !!HCD_INTF_AUTHORIZED(hcd));
-}
-
-/*
- * interface_authorized_default_store - store default authorization status
- * for USB interfaces
- *
- * note: interface_authorized_default is the default value
- *       for initializing the authorized attribute of interfaces
- */
-static ssize_t interface_authorized_default_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct usb_device *usb_dev = to_usb_device(dev);
-	struct usb_hcd *hcd = bus_to_hcd(usb_dev->bus);
-	int rc = count;
-	bool val;
-
-	if (strtobool(buf, &val) != 0)
-		return -EINVAL;
-
-	if (val)
-		set_bit(HCD_FLAG_INTF_AUTHORIZED, &hcd->flags);
-	else
-		clear_bit(HCD_FLAG_INTF_AUTHORIZED, &hcd->flags);
-
-	return rc;
-}
-static DEVICE_ATTR_RW(interface_authorized_default);
-
-/* Group all the USB bus attributes */
-static struct attribute *usb_bus_attrs[] = {
-		&dev_attr_authorized_default.attr,
-		&dev_attr_interface_authorized_default.attr,
-		NULL,
-};
-
-static const struct attribute_group usb_bus_attr_group = {
-	.name = NULL,	/* we want them in the same directory */
-	.attrs = usb_bus_attrs,
-};
-
-
-
 /*-------------------------------------------------------------------------*/
 
 /**
@@ -1512,7 +1412,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 	if (usb_endpoint_xfer_control(&urb->ep->desc)) {
 		if (hcd->self.uses_pio_for_control)
 			return ret;
-		if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
+		if (hcd_uses_dma(hcd)) {
 			if (is_vmalloc_addr(urb->setup_packet)) {
 				WARN_ONCE(1, "setup packet is not dma capable\n");
 				return -EAGAIN;
@@ -1546,7 +1446,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 	dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 	if (urb->transfer_buffer_length != 0
 	    && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
-		if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
+		if (hcd_uses_dma(hcd)) {
 			if (urb->num_sgs) {
 				int n;
 
@@ -2894,32 +2794,11 @@ int usb_add_hcd(struct usb_hcd *hcd,
 	if (retval != 0)
 		goto err_register_root_hub;
 
-	retval = sysfs_create_group(&rhdev->dev.kobj, &usb_bus_attr_group);
-	if (retval < 0) {
-		printk(KERN_ERR "Cannot register USB bus sysfs attributes: %d\n",
-		       retval);
-		goto error_create_attr_group;
-	}
 	if (hcd->uses_new_polling && HCD_POLL_RH(hcd))
 		usb_hcd_poll_rh_status(hcd);
 
 	return retval;
 
-error_create_attr_group:
-	clear_bit(HCD_FLAG_RH_RUNNING, &hcd->flags);
-	if (HC_IS_RUNNING(hcd->state))
-		hcd->state = HC_STATE_QUIESCING;
-	spin_lock_irq(&hcd_root_hub_lock);
-	hcd->rh_registered = 0;
-	spin_unlock_irq(&hcd_root_hub_lock);
-
-#ifdef CONFIG_PM
-	cancel_work_sync(&hcd->wakeup_work);
-#endif
-	cancel_work_sync(&hcd->died_work);
-	mutex_lock(&usb_bus_idr_lock);
-	usb_disconnect(&rhdev);		/* Sets rhdev to NULL */
-	mutex_unlock(&usb_bus_idr_lock);
 err_register_root_hub:
 	hcd->rh_pollable = 0;
 	clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
@@ -2963,8 +2842,6 @@ void usb_remove_hcd(struct usb_hcd *hcd)
 	dev_info(hcd->self.controller, "remove, state %x\n", hcd->state);
 
 	usb_get_dev(rhdev);
-	sysfs_remove_group(&rhdev->dev.kobj, &usb_bus_attr_group);
-
 	clear_bit(HCD_FLAG_RH_RUNNING, &hcd->flags);
 	if (HC_IS_RUNNING (hcd->state))
 		hcd->state = HC_STATE_QUIESCING;