USB: Move wusbcore and UWB to staging as it is obsolete

The UWB and wusbcore code is long obsolete, so let us just move the code
out of the real part of the kernel and into the drivers/staging/
location with plans to remove it entirely in a few releases.

Link: https://lore.kernel.org/r/20190806101509.GA11280@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 457 deletions

diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c
deleted file mode 100644
index 3e5c07fd6b10..000000000000
--- a/drivers/uwb/lc-dev.c
+++ /dev/null
@@ -1,457 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Ultra Wide Band
- * Life cycle of devices
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * FIXME: docs
- */
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/export.h>
-#include <linux/err.h>
-#include <linux/kdev_t.h>
-#include <linux/random.h>
-#include <linux/stat.h>
-#include "uwb-internal.h"
-
-/* We initialize addresses to 0xff (invalid, as it is bcast) */
-static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr)
-{
-	memset(&addr->data, 0xff, sizeof(addr->data));
-}
-
-static inline void uwb_mac_addr_init(struct uwb_mac_addr *addr)
-{
-	memset(&addr->data, 0xff, sizeof(addr->data));
-}
-
-/*
- * Add callback @new to be called when an event occurs in @rc.
- */
-int uwb_notifs_register(struct uwb_rc *rc, struct uwb_notifs_handler *new)
-{
-	if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
-		return -ERESTARTSYS;
-	list_add(&new->list_node, &rc->notifs_chain.list);
-	mutex_unlock(&rc->notifs_chain.mutex);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(uwb_notifs_register);
-
-/*
- * Remove event handler (callback)
- */
-int uwb_notifs_deregister(struct uwb_rc *rc, struct uwb_notifs_handler *entry)
-{
-	if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
-		return -ERESTARTSYS;
-	list_del(&entry->list_node);
-	mutex_unlock(&rc->notifs_chain.mutex);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(uwb_notifs_deregister);
-
-/*
- * Notify all event handlers of a given event on @rc
- *
- * We are called with a valid reference to the device, or NULL if the
- * event is not for a particular event (e.g., a BG join event).
- */
-void uwb_notify(struct uwb_rc *rc, struct uwb_dev *uwb_dev, enum uwb_notifs event)
-{
-	struct uwb_notifs_handler *handler;
-	if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
-		return;
-	if (!list_empty(&rc->notifs_chain.list)) {
-		list_for_each_entry(handler, &rc->notifs_chain.list, list_node) {
-			handler->cb(handler->data, uwb_dev, event);
-		}
-	}
-	mutex_unlock(&rc->notifs_chain.mutex);
-}
-
-/*
- * Release the backing device of a uwb_dev that has been dynamically allocated.
- */
-static void uwb_dev_sys_release(struct device *dev)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-
-	uwb_bce_put(uwb_dev->bce);
-	memset(uwb_dev, 0x69, sizeof(*uwb_dev));
-	kfree(uwb_dev);
-}
-
-/*
- * Initialize a UWB device instance
- *
- * Alloc, zero and call this function.
- */
-void uwb_dev_init(struct uwb_dev *uwb_dev)
-{
-	mutex_init(&uwb_dev->mutex);
-	device_initialize(&uwb_dev->dev);
-	uwb_dev->dev.release = uwb_dev_sys_release;
-	uwb_dev_addr_init(&uwb_dev->dev_addr);
-	uwb_mac_addr_init(&uwb_dev->mac_addr);
-	bitmap_fill(uwb_dev->streams, UWB_NUM_GLOBAL_STREAMS);
-}
-
-static ssize_t uwb_dev_EUI_48_show(struct device *dev,
-				   struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	char addr[UWB_ADDR_STRSIZE];
-
-	uwb_mac_addr_print(addr, sizeof(addr), &uwb_dev->mac_addr);
-	return sprintf(buf, "%s\n", addr);
-}
-static DEVICE_ATTR(EUI_48, S_IRUGO, uwb_dev_EUI_48_show, NULL);
-
-static ssize_t uwb_dev_DevAddr_show(struct device *dev,
-				    struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	char addr[UWB_ADDR_STRSIZE];
-
-	uwb_dev_addr_print(addr, sizeof(addr), &uwb_dev->dev_addr);
-	return sprintf(buf, "%s\n", addr);
-}
-static DEVICE_ATTR(DevAddr, S_IRUGO, uwb_dev_DevAddr_show, NULL);
-
-/*
- * Show the BPST of this device.
- *
- * Calculated from the receive time of the device's beacon and it's
- * slot number.
- */
-static ssize_t uwb_dev_BPST_show(struct device *dev,
-				 struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	struct uwb_beca_e *bce;
-	struct uwb_beacon_frame *bf;
-	u16 bpst;
-
-	bce = uwb_dev->bce;
-	mutex_lock(&bce->mutex);
-	bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo;
-	bpst = bce->be->wBPSTOffset
-		- (u16)(bf->Beacon_Slot_Number * UWB_BEACON_SLOT_LENGTH_US);
-	mutex_unlock(&bce->mutex);
-
-	return sprintf(buf, "%d\n", bpst);
-}
-static DEVICE_ATTR(BPST, S_IRUGO, uwb_dev_BPST_show, NULL);
-
-/*
- * Show the IEs a device is beaconing
- *
- * We need to access the beacon cache, so we just lock it really
- * quick, print the IEs and unlock.
- *
- * We have a reference on the cache entry, so that should be
- * quite safe.
- */
-static ssize_t uwb_dev_IEs_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-
-	return uwb_bce_print_IEs(uwb_dev, uwb_dev->bce, buf, PAGE_SIZE);
-}
-static DEVICE_ATTR(IEs, S_IRUGO | S_IWUSR, uwb_dev_IEs_show, NULL);
-
-static ssize_t uwb_dev_LQE_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	struct uwb_beca_e *bce = uwb_dev->bce;
-	size_t result;
-
-	mutex_lock(&bce->mutex);
-	result = stats_show(&uwb_dev->bce->lqe_stats, buf);
-	mutex_unlock(&bce->mutex);
-	return result;
-}
-
-static ssize_t uwb_dev_LQE_store(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t size)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	struct uwb_beca_e *bce = uwb_dev->bce;
-	ssize_t result;
-
-	mutex_lock(&bce->mutex);
-	result = stats_store(&uwb_dev->bce->lqe_stats, buf, size);
-	mutex_unlock(&bce->mutex);
-	return result;
-}
-static DEVICE_ATTR(LQE, S_IRUGO | S_IWUSR, uwb_dev_LQE_show, uwb_dev_LQE_store);
-
-static ssize_t uwb_dev_RSSI_show(struct device *dev,
-				 struct device_attribute *attr, char *buf)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	struct uwb_beca_e *bce = uwb_dev->bce;
-	size_t result;
-
-	mutex_lock(&bce->mutex);
-	result = stats_show(&uwb_dev->bce->rssi_stats, buf);
-	mutex_unlock(&bce->mutex);
-	return result;
-}
-
-static ssize_t uwb_dev_RSSI_store(struct device *dev,
-				  struct device_attribute *attr,
-				  const char *buf, size_t size)
-{
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	struct uwb_beca_e *bce = uwb_dev->bce;
-	ssize_t result;
-
-	mutex_lock(&bce->mutex);
-	result = stats_store(&uwb_dev->bce->rssi_stats, buf, size);
-	mutex_unlock(&bce->mutex);
-	return result;
-}
-static DEVICE_ATTR(RSSI, S_IRUGO | S_IWUSR, uwb_dev_RSSI_show, uwb_dev_RSSI_store);
-
-
-static struct attribute *uwb_dev_attrs[] = {
-	&dev_attr_EUI_48.attr,
-	&dev_attr_DevAddr.attr,
-	&dev_attr_BPST.attr,
-	&dev_attr_IEs.attr,
-	&dev_attr_LQE.attr,
-	&dev_attr_RSSI.attr,
-	NULL,
-};
-ATTRIBUTE_GROUPS(uwb_dev);
-
-/* UWB bus type. */
-struct bus_type uwb_bus_type = {
-	.name =		"uwb",
-	.dev_groups =	uwb_dev_groups,
-};
-
-/**
- * Device SYSFS registration
- */
-static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
-{
-	struct device *dev;
-
-	dev = &uwb_dev->dev;
-	dev->parent = parent_dev;
-	dev_set_drvdata(dev, uwb_dev);
-
-	return device_add(dev);
-}
-
-
-static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev)
-{
-	dev_set_drvdata(&uwb_dev->dev, NULL);
-	device_del(&uwb_dev->dev);
-}
-
-
-/**
- * Register and initialize a new UWB device
- *
- * Did you call uwb_dev_init() on it?
- *
- * @parent_rc: is the parent radio controller who has the link to the
- *             device. When registering the UWB device that is a UWB
- *             Radio Controller, we point back to it.
- *
- * If registering the device that is part of a radio, caller has set
- * rc->uwb_dev->dev. Otherwise it is to be left NULL--a new one will
- * be allocated.
- */
-int uwb_dev_add(struct uwb_dev *uwb_dev, struct device *parent_dev,
-		struct uwb_rc *parent_rc)
-{
-	int result;
-	struct device *dev;
-
-	BUG_ON(uwb_dev == NULL);
-	BUG_ON(parent_dev == NULL);
-	BUG_ON(parent_rc == NULL);
-
-	mutex_lock(&uwb_dev->mutex);
-	dev = &uwb_dev->dev;
-	uwb_dev->rc = parent_rc;
-	result = __uwb_dev_sys_add(uwb_dev, parent_dev);
-	if (result < 0)
-		printk(KERN_ERR "UWB: unable to register dev %s with sysfs: %d\n",
-		       dev_name(dev), result);
-	mutex_unlock(&uwb_dev->mutex);
-	return result;
-}
-
-
-void uwb_dev_rm(struct uwb_dev *uwb_dev)
-{
-	mutex_lock(&uwb_dev->mutex);
-	__uwb_dev_sys_rm(uwb_dev);
-	mutex_unlock(&uwb_dev->mutex);
-}
-
-
-static
-int __uwb_dev_try_get(struct device *dev, void *__target_uwb_dev)
-{
-	struct uwb_dev *target_uwb_dev = __target_uwb_dev;
-	struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-	if (uwb_dev == target_uwb_dev) {
-		uwb_dev_get(uwb_dev);
-		return 1;
-	} else
-		return 0;
-}
-
-
-/**
- * Given a UWB device descriptor, validate and refcount it
- *
- * @returns NULL if the device does not exist or is quiescing; the ptr to
- *               it otherwise.
- */
-struct uwb_dev *uwb_dev_try_get(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
-{
-	if (uwb_dev_for_each(rc, __uwb_dev_try_get, uwb_dev))
-		return uwb_dev;
-	else
-		return NULL;
-}
-EXPORT_SYMBOL_GPL(uwb_dev_try_get);
-
-
-/**
- * Remove a device from the system [grunt for other functions]
- */
-int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc)
-{
-	struct device *dev = &uwb_dev->dev;
-	char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
-
-	uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr);
-	uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr);
-	dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n",
-		 macbuf, devbuf,
-		 uwb_dev->dev.bus->name,
-		 rc ? dev_name(&(rc->uwb_dev.dev)) : "");
-	uwb_dev_rm(uwb_dev);
-	list_del(&uwb_dev->bce->node);
-	uwb_bce_put(uwb_dev->bce);
-	uwb_dev_put(uwb_dev);	/* for the creation in _onair() */
-
-	return 0;
-}
-
-
-/**
- * A device went off the air, clean up after it!
- *
- * This is called by the UWB Daemon (through the beacon purge function
- * uwb_bcn_cache_purge) when it is detected that a device has been in
- * radio silence for a while.
- *
- * If this device is actually a local radio controller we don't need
- * to go through the offair process, as it is not registered as that.
- *
- * NOTE: uwb_bcn_cache.mutex is held!
- */
-void uwbd_dev_offair(struct uwb_beca_e *bce)
-{
-	struct uwb_dev *uwb_dev;
-
-	uwb_dev = bce->uwb_dev;
-	if (uwb_dev) {
-		uwb_notify(uwb_dev->rc, uwb_dev, UWB_NOTIF_OFFAIR);
-		__uwb_dev_offair(uwb_dev, uwb_dev->rc);
-	}
-}
-
-
-/**
- * A device went on the air, start it up!
- *
- * This is called by the UWB Daemon when it is detected that a device
- * has popped up in the radio range of the radio controller.
- *
- * It will just create the freaking device, register the beacon and
- * stuff and yatla, done.
- *
- *
- * NOTE: uwb_beca.mutex is held, bce->mutex is held
- */
-void uwbd_dev_onair(struct uwb_rc *rc, struct uwb_beca_e *bce)
-{
-	int result;
-	struct device *dev = &rc->uwb_dev.dev;
-	struct uwb_dev *uwb_dev;
-	char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
-
-	uwb_mac_addr_print(macbuf, sizeof(macbuf), bce->mac_addr);
-	uwb_dev_addr_print(devbuf, sizeof(devbuf), &bce->dev_addr);
-	uwb_dev = kzalloc(sizeof(struct uwb_dev), GFP_KERNEL);
-	if (uwb_dev == NULL) {
-		dev_err(dev, "new device %s: Cannot allocate memory\n",
-			macbuf);
-		return;
-	}
-	uwb_dev_init(uwb_dev);		/* This sets refcnt to one, we own it */
-	uwb_dev->dev.bus = &uwb_bus_type;
-	uwb_dev->mac_addr = *bce->mac_addr;
-	uwb_dev->dev_addr = bce->dev_addr;
-	dev_set_name(&uwb_dev->dev, "%s", macbuf);
-
-	/* plug the beacon cache */
-	bce->uwb_dev = uwb_dev;
-	uwb_dev->bce = bce;
-	uwb_bce_get(bce);		/* released in uwb_dev_sys_release() */
-
-	result = uwb_dev_add(uwb_dev, &rc->uwb_dev.dev, rc);
-	if (result < 0) {
-		dev_err(dev, "new device %s: cannot instantiate device\n",
-			macbuf);
-		goto error_dev_add;
-	}
-
-	dev_info(dev, "uwb device (mac %s dev %s) connected to %s %s\n",
-		 macbuf, devbuf, uwb_dev->dev.bus->name,
-		 dev_name(&(rc->uwb_dev.dev)));
-	uwb_notify(rc, uwb_dev, UWB_NOTIF_ONAIR);
-	return;
-
-error_dev_add:
-	bce->uwb_dev = NULL;
-	uwb_bce_put(bce);
-	kfree(uwb_dev);
-	return;
-}
-
-/**
- * Iterate over the list of UWB devices, calling a @function on each
- *
- * See docs for bus_for_each()....
- *
- * @rc:       radio controller for the devices.
- * @function: function to call.
- * @priv:     data to pass to @function.
- * @returns:  0 if no invocation of function() returned a value
- *            different to zero. That value otherwise.
- */
-int uwb_dev_for_each(struct uwb_rc *rc, uwb_dev_for_each_f function, void *priv)
-{
-	return device_for_each_child(&rc->uwb_dev.dev, priv, function);
-}
-EXPORT_SYMBOL_GPL(uwb_dev_for_each);