1 files changed, 0 insertions, 211 deletions
diff --git a/drivers/staging/uwb/umc-bus.c b/drivers/staging/uwb/umc-bus.c
deleted file mode 100644
index 8b931f66a720..000000000000
--- a/drivers/staging/uwb/umc-bus.c
+++ /dev/null
@@ -1,211 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Bus for UWB Multi-interface Controller capabilities.
- *
- * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
- */
-#include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/workqueue.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include "include/umc.h"
-
-static int umc_bus_pre_reset_helper(struct device *dev, void *data)
-{
-	int ret = 0;
-
-	if (dev->driver) {
-		struct umc_dev *umc = to_umc_dev(dev);
-		struct umc_driver *umc_drv = to_umc_driver(dev->driver);
-
-		if (umc_drv->pre_reset)
-			ret = umc_drv->pre_reset(umc);
-		else
-			device_release_driver(dev);
-	}
-	return ret;
-}
-
-static int umc_bus_post_reset_helper(struct device *dev, void *data)
-{
-	int ret = 0;
-
-	if (dev->driver) {
-		struct umc_dev *umc = to_umc_dev(dev);
-		struct umc_driver *umc_drv = to_umc_driver(dev->driver);
-
-		if (umc_drv->post_reset)
-			ret = umc_drv->post_reset(umc);
-	} else
-		ret = device_attach(dev);
-
-	return ret;
-}
-
-/**
- * umc_controller_reset - reset the whole UMC controller
- * @umc: the UMC device for the radio controller.
- *
- * Drivers or all capabilities of the controller will have their
- * pre_reset methods called or be unbound from their device.  Then all
- * post_reset methods will be called or the drivers will be rebound.
- *
- * Radio controllers must provide pre_reset and post_reset methods and
- * reset the hardware in their start method.
- *
- * If this is called while a probe() or remove() is in progress it
- * will return -EAGAIN and not perform the reset.
- */
-int umc_controller_reset(struct umc_dev *umc)
-{
-	struct device *parent = umc->dev.parent;
-	int ret = 0;
-
-	if (!device_trylock(parent))
-		return -EAGAIN;
-	ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
-	if (ret >= 0)
-		ret = device_for_each_child(parent, parent, umc_bus_post_reset_helper);
-	device_unlock(parent);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(umc_controller_reset);
-
-/**
- * umc_match_pci_id - match a UMC driver to a UMC device's parent PCI device.
- * @umc_drv: umc driver with match_data pointing to a zero-terminated
- * table of pci_device_id's.
- * @umc: umc device whose parent is to be matched.
- */
-int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc)
-{
-	const struct pci_device_id *id_table = umc_drv->match_data;
-	struct pci_dev *pci;
-
-	if (!dev_is_pci(umc->dev.parent))
-		return 0;
-
-	pci = to_pci_dev(umc->dev.parent);
-	return pci_match_id(id_table, pci) != NULL;
-}
-EXPORT_SYMBOL_GPL(umc_match_pci_id);
-
-static int umc_bus_rescan_helper(struct device *dev, void *data)
-{
-	int ret = 0;
-
-	if (!dev->driver)
-		ret = device_attach(dev);
-
-	return ret;
-}
-
-static void umc_bus_rescan(struct device *parent)
-{
-	int err;
-
-	/*
-	 * We can't use bus_rescan_devices() here as it deadlocks when
-	 * it tries to retake the dev->parent semaphore.
-	 */
-	err = device_for_each_child(parent, NULL, umc_bus_rescan_helper);
-	if (err < 0)
-		printk(KERN_WARNING "%s: rescan of bus failed: %d\n",
-		       KBUILD_MODNAME, err);
-}
-
-static int umc_bus_match(struct device *dev, struct device_driver *drv)
-{
-	struct umc_dev *umc = to_umc_dev(dev);
-	struct umc_driver *umc_driver = to_umc_driver(drv);
-
-	if (umc->cap_id == umc_driver->cap_id) {
-		if (umc_driver->match)
-			return umc_driver->match(umc_driver, umc);
-		else
-			return 1;
-	}
-	return 0;
-}
-
-static int umc_device_probe(struct device *dev)
-{
-	struct umc_dev *umc;
-	struct umc_driver *umc_driver;
-	int err;
-
-	umc_driver = to_umc_driver(dev->driver);
-	umc = to_umc_dev(dev);
-
-	get_device(dev);
-	err = umc_driver->probe(umc);
-	if (err)
-		put_device(dev);
-	else
-		umc_bus_rescan(dev->parent);
-
-	return err;
-}
-
-static int umc_device_remove(struct device *dev)
-{
-	struct umc_dev *umc;
-	struct umc_driver *umc_driver;
-
-	umc_driver = to_umc_driver(dev->driver);
-	umc = to_umc_dev(dev);
-
-	umc_driver->remove(umc);
-	put_device(dev);
-	return 0;
-}
-
-static ssize_t capability_id_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct umc_dev *umc = to_umc_dev(dev);
-
-	return sprintf(buf, "0x%02x\n", umc->cap_id);
-}
-static DEVICE_ATTR_RO(capability_id);
-
-static ssize_t version_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct umc_dev *umc = to_umc_dev(dev);
-
-	return sprintf(buf, "0x%04x\n", umc->version);
-}
-static DEVICE_ATTR_RO(version);
-
-static struct attribute *umc_dev_attrs[] = {
-	&dev_attr_capability_id.attr,
-	&dev_attr_version.attr,
-	NULL,
-};
-ATTRIBUTE_GROUPS(umc_dev);
-
-struct bus_type umc_bus_type = {
-	.name		= "umc",
-	.match		= umc_bus_match,
-	.probe		= umc_device_probe,
-	.remove		= umc_device_remove,
-	.dev_groups	= umc_dev_groups,
-};
-EXPORT_SYMBOL_GPL(umc_bus_type);
-
-static int __init umc_bus_init(void)
-{
-	return bus_register(&umc_bus_type);
-}
-module_init(umc_bus_init);
-
-static void __exit umc_bus_exit(void)
-{
-	bus_unregister(&umc_bus_type);
-}
-module_exit(umc_bus_exit);
-
-MODULE_DESCRIPTION("UWB Multi-interface Controller capability bus");
-MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
-MODULE_LICENSE("GPL");