/*
* drivers/s390/cio/ccwgroup.c
* bus driver for ccwgroup
- * $Revision: 1.29 $
*
* Copyright (C) 2002 IBM Deutschland Entwicklung GmbH,
* IBM Corporation
* Author(s): Arnd Bergmann (arndb@de.ibm.com)
- * Cornelia Huck (cohuck@de.ibm.com)
+ * Cornelia Huck (cornelia.huck@de.ibm.com)
*/
#include <linux/module.h>
#include <linux/errno.h>
return 0;
}
static int
-ccwgroup_hotplug (struct device *dev, char **envp, int num_envp, char *buffer,
+ccwgroup_uevent (struct device *dev, char **envp, int num_envp, char *buffer,
int buffer_size)
{
/* TODO */
return 0;
}
-static struct bus_type ccwgroup_bus_type = {
- .name = "ccwgroup",
- .match = ccwgroup_bus_match,
- .hotplug = ccwgroup_hotplug,
-};
+static struct bus_type ccwgroup_bus_type;
static inline void
__ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)
* longer needed or accidentially created. Saves memory :)
*/
static ssize_t
-ccwgroup_ungroup_store(struct device *dev, const char *buf, size_t count)
+ccwgroup_ungroup_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct ccwgroup_device *gdev;
struct ccwgroup_device *gdev;
int i;
int rc;
- int del_drvdata;
if (argc > 256) /* disallow dumb users */
return -EINVAL;
- gdev = kmalloc(sizeof(*gdev) + argc*sizeof(gdev->cdev[0]), GFP_KERNEL);
+ gdev = kzalloc(sizeof(*gdev) + argc*sizeof(gdev->cdev[0]), GFP_KERNEL);
if (!gdev)
return -ENOMEM;
- memset(gdev, 0, sizeof(*gdev) + argc*sizeof(gdev->cdev[0]));
atomic_set(&gdev->onoff, 0);
- del_drvdata = 0;
for (i = 0; i < argc; i++) {
gdev->cdev[i] = get_ccwdev_by_busid(cdrv, argv[i]);
rc = -EINVAL;
goto free_dev;
}
- }
- for (i = 0; i < argc; i++)
gdev->cdev[i]->dev.driver_data = gdev;
- del_drvdata = 1;
+ }
gdev->creator_id = creator_id;
gdev->count = argc;
- gdev->dev = (struct device ) {
- .bus = &ccwgroup_bus_type,
- .parent = root,
- .release = ccwgroup_release,
- };
+ gdev->dev.bus = &ccwgroup_bus_type;
+ gdev->dev.parent = root;
+ gdev->dev.release = ccwgroup_release;
snprintf (gdev->dev.bus_id, BUS_ID_SIZE, "%s",
gdev->cdev[0]->dev.bus_id);
free_dev:
for (i = 0; i < argc; i++)
if (gdev->cdev[i]) {
- put_device(&gdev->cdev[i]->dev);
- if (del_drvdata)
+ if (gdev->cdev[i]->dev.driver_data == gdev)
gdev->cdev[i]->dev.driver_data = NULL;
+ put_device(&gdev->cdev[i]->dev);
}
kfree(gdev);
return rc;
struct ccwgroup_driver *gdrv;
int ret;
- if (atomic_compare_and_swap(0, 1, &gdev->onoff))
+ if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;
if (gdev->state == CCWGROUP_ONLINE) {
ret = 0;
goto out;
}
gdrv = to_ccwgroupdrv (gdev->dev.driver);
- if ((ret = gdrv->set_online(gdev)))
+ if ((ret = gdrv->set_online ? gdrv->set_online(gdev) : 0))
goto out;
gdev->state = CCWGROUP_ONLINE;
struct ccwgroup_driver *gdrv;
int ret;
- if (atomic_compare_and_swap(0, 1, &gdev->onoff))
+ if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;
if (gdev->state == CCWGROUP_OFFLINE) {
ret = 0;
goto out;
}
gdrv = to_ccwgroupdrv (gdev->dev.driver);
- if ((ret = gdrv->set_offline(gdev)))
+ if ((ret = gdrv->set_offline ? gdrv->set_offline(gdev) : 0))
goto out;
gdev->state = CCWGROUP_OFFLINE;
}
static ssize_t
-ccwgroup_online_store (struct device *dev, const char *buf, size_t count)
+ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct ccwgroup_device *gdev;
struct ccwgroup_driver *gdrv;
if (!try_module_get(gdrv->owner))
return -EINVAL;
- value = simple_strtoul(buf, 0, 0);
+ value = simple_strtoul(buf, NULL, 0);
ret = count;
if (value == 1)
ccwgroup_set_online(gdev);
}
static ssize_t
-ccwgroup_online_show (struct device *dev, char *buf)
+ccwgroup_online_show (struct device *dev, struct device_attribute *attr, char *buf)
{
int online;
return 0;
}
+static struct bus_type ccwgroup_bus_type = {
+ .name = "ccwgroup",
+ .match = ccwgroup_bus_match,
+ .uevent = ccwgroup_uevent,
+ .probe = ccwgroup_probe,
+ .remove = ccwgroup_remove,
+};
+
int
ccwgroup_driver_register (struct ccwgroup_driver *cdriver)
{
/* register our new driver with the core */
- cdriver->driver = (struct device_driver) {
- .bus = &ccwgroup_bus_type,
- .name = cdriver->name,
- .probe = ccwgroup_probe,
- .remove = ccwgroup_remove,
- };
+ cdriver->driver.bus = &ccwgroup_bus_type;
+ cdriver->driver.name = cdriver->name;
return driver_register(&cdriver->driver);
}
-static inline struct device *
-__get_next_ccwgroup_device(struct device_driver *drv)
+static int
+__ccwgroup_match_all(struct device *dev, void *data)
{
- struct device *dev, *d;
-
- down_read(&drv->bus->subsys.rwsem);
- dev = NULL;
- list_for_each_entry(d, &drv->devices, driver_list) {
- dev = get_device(d);
- if (dev)
- break;
- }
- up_read(&drv->bus->subsys.rwsem);
- return dev;
+ return 1;
}
void
/* We don't want ccwgroup devices to live longer than their driver. */
get_driver(&cdriver->driver);
- while ((dev = __get_next_ccwgroup_device(&cdriver->driver))) {
+ while ((dev = driver_find_device(&cdriver->driver, NULL, NULL,
+ __ccwgroup_match_all))) {
__ccwgroup_remove_symlinks(to_ccwgroupdev(dev));
device_unregister(dev);
put_device(dev);
- };
+ }
put_driver(&cdriver->driver);
driver_unregister(&cdriver->driver);
}
if (cdev->dev.driver_data) {
gdev = (struct ccwgroup_device *)cdev->dev.driver_data;
if (get_device(&gdev->dev)) {
- if (!list_empty(&gdev->dev.node))
+ if (device_is_registered(&gdev->dev))
return gdev;
put_device(&gdev->dev);
}
git://git.onelab.eu / linux-2.6.git / blobdiff