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authormochel@digitalimplant.org <mochel@digitalimplant.org>2005-03-21 10:52:54 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2005-06-20 15:15:13 -0700
commit07e4a3e27fe414980ddc85a358e5a56abc48b363 (patch)
treeeb32858e7facf8b24a2f0fc2d4e829d6ee715c09 /drivers/base/bus.c
parentaf70316af182f4716cc5eec7e0d27fc731d164bd (diff)
[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>
Diffstat (limited to 'drivers/base/bus.c')
-rw-r--r--drivers/base/bus.c182
1 files changed, 0 insertions, 182 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index aa27f76d28c..1b05c1399e3 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);