[PATCH] Move device/driver code to drivers/base/dd.c

This relocates the driver binding/unbinding code to drivers/base/dd.c. This is done
for two reasons: One, it's not code related to the bus_type itself; it uses some from
that, some from devices, and some from drivers. And Two, it will make it easier to do
some of the upcoming lock removal on that code..

Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 182 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index aa27f76d28cd..1b05c1399e37 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -18,7 +18,6 @@
 #include "power/power.h"
 
 #define to_dev(node) container_of(node, struct device, bus_list)
-#define to_drv(node) container_of(node, struct device_driver, kobj.entry)
 
 #define to_bus_attr(_attr) container_of(_attr, struct bus_attribute, attr)
 #define to_bus(obj) container_of(obj, struct bus_type, subsys.kset.kobj)
@@ -243,181 +242,6 @@ int bus_for_each_drv(struct bus_type * bus, struct device_driver * start,
         return ret;
 }
 
-/**
- *      device_bind_driver - bind a driver to one device.
- *      @dev:   device.
- *
- *      Allow manual attachment of a driver to a device.
- *      Caller must have already set @dev->driver.
- *
- *      Note that this does not modify the bus reference count
- *      nor take the bus's rwsem. Please verify those are accounted
- *      for before calling this. (It is ok to call with no other effort
- *      from a driver's probe() method.)
- */
-
-void device_bind_driver(struct device * dev)
-{
-        pr_debug("bound device '%s' to driver '%s'\n",
-                 dev->bus_id, dev->driver->name);
-        list_add_tail(&dev->driver_list, &dev->driver->devices);
-        sysfs_create_link(&dev->driver->kobj, &dev->kobj,
-                          kobject_name(&dev->kobj));
-        sysfs_create_link(&dev->kobj, &dev->driver->kobj, "driver");
-}
-
-
-/**
- *      driver_probe_device - attempt to bind device & driver.
- *      @drv:   driver.
- *      @dev:   device.
- *
- *      First, we call the bus's match function, if one present, which
- *      should compare the device IDs the driver supports with the
- *      device IDs of the device. Note we don't do this ourselves
- *      because we don't know the format of the ID structures, nor what
- *      is to be considered a match and what is not.
- *
- *      If we find a match, we call @drv->probe(@dev) if it exists, and
- *      call device_bind_driver() above.
- */
-int driver_probe_device(struct device_driver * drv, struct device * dev)
-{
-        int error = 0;
-
-        if (drv->bus->match && !drv->bus->match(dev, drv))
-                return -ENODEV;
-
-        down(&dev->sem);
-        dev->driver = drv;
-        if (drv->probe) {
-                error = drv->probe(dev);
-                if (error) {
-                        dev->driver = NULL;
-                        up(&dev->sem);
-                        return error;
-                }
-        }
-        up(&dev->sem);
-        device_bind_driver(dev);
-        return 0;
-}
-
-
-/**
- *      device_attach - try to attach device to a driver.
- *      @dev:   device.
- *
- *      Walk the list of drivers that the bus has and call
- *      driver_probe_device() for each pair. If a compatible
- *      pair is found, break out and return.
- */
-int device_attach(struct device * dev)
-{
-        struct bus_type * bus = dev->bus;
-        struct list_head * entry;
-        int error;
-
-        if (dev->driver) {
-                device_bind_driver(dev);
-                return 1;
-        }
-
-        if (bus->match) {
-                list_for_each(entry, &bus->drivers.list) {
-                        struct device_driver * drv = to_drv(entry);
-                        error = driver_probe_device(drv, dev);
-                        if (!error)
-                                /* success, driver matched */
-                                return 1;
-                        if (error != -ENODEV && error != -ENXIO)
-                                /* driver matched but the probe failed */
-                                printk(KERN_WARNING
-                                    "%s: probe of %s failed with error %d\n",
-                                    drv->name, dev->bus_id, error);
-                }
-        }
-
-        return 0;
-}
-
-
-/**
- *      driver_attach - try to bind driver to devices.
- *      @drv:   driver.
- *
- *      Walk the list of devices that the bus has on it and try to
- *      match the driver with each one.  If driver_probe_device()
- *      returns 0 and the @dev->driver is set, we've found a
- *      compatible pair.
- *
- *      Note that we ignore the -ENODEV error from driver_probe_device(),
- *      since it's perfectly valid for a driver not to bind to any devices.
- */
-void driver_attach(struct device_driver * drv)
-{
-        struct bus_type * bus = drv->bus;
-        struct list_head * entry;
-        int error;
-
-        if (!bus->match)
-                return;
-
-        list_for_each(entry, &bus->devices.list) {
-                struct device * dev = container_of(entry, struct device, bus_list);
-                if (!dev->driver) {
-                        error = driver_probe_device(drv, dev);
-                        if (error && (error != -ENODEV))
-                                /* driver matched but the probe failed */
-                                printk(KERN_WARNING
-                                    "%s: probe of %s failed with error %d\n",
-                                    drv->name, dev->bus_id, error);
-                }
-        }
-}
-
-
-/**
- *      device_release_driver - manually detach device from driver.
- *      @dev:   device.
- *
- *      Manually detach device from driver.
- *      Note that this is called without incrementing the bus
- *      reference count nor taking the bus's rwsem. Be sure that
- *      those are accounted for before calling this function.
- */
-
-void device_release_driver(struct device * dev)
-{
-        struct device_driver * drv;
-
-        down(&dev->sem);
-        drv = dev->driver;
-        if (drv) {
-                sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
-                sysfs_remove_link(&dev->kobj, "driver");
-                list_del_init(&dev->driver_list);
-                if (drv->remove)
-                        drv->remove(dev);
-                dev->driver = NULL;
-        }
-        up(&dev->sem);
-}
-
-
-/**
- *      driver_detach - detach driver from all devices it controls.
- *      @drv:   driver.
- */
-
-static void driver_detach(struct device_driver * drv)
-{
-        while (!list_empty(&drv->devices)) {
-                struct device * dev = container_of(drv->devices.next, struct device, driver_list);
-                device_release_driver(dev);
-        }
-}
-
 static int device_add_attrs(struct bus_type * bus, struct device * dev)
 {
         int error = 0;
@@ -757,12 +581,6 @@ int __init buses_init(void)
 EXPORT_SYMBOL_GPL(bus_for_each_dev);
 EXPORT_SYMBOL_GPL(bus_for_each_drv);
 
-EXPORT_SYMBOL_GPL(driver_probe_device);
-EXPORT_SYMBOL_GPL(device_bind_driver);
-EXPORT_SYMBOL_GPL(device_release_driver);
-EXPORT_SYMBOL_GPL(device_attach);
-EXPORT_SYMBOL_GPL(driver_attach);
-
 EXPORT_SYMBOL_GPL(bus_add_device);
 EXPORT_SYMBOL_GPL(bus_remove_device);
 EXPORT_SYMBOL_GPL(bus_register);