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authorGreg Kroah-Hartman <gregkh@suse.de>2007-11-29 02:59:15 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-25 07:40:35 +0300
commite5dd12784617f0f1fae5f96a7fac1ec4c49fadbe (patch)
treec81e2a2f3aa1c60b92951d398774f1391bdc6a1c /drivers/base/driver.c
parentc63469a3985a9771c18a916b8d42845d044ea0b1 (diff)
downloadlinux-e5dd12784617f0f1fae5f96a7fac1ec4c49fadbe.tar.xz
Driver core: move the static kobject out of struct driver
This patch removes the kobject, and a few other driver-core-only fields out of struct driver and into the driver core only. Now drivers can be safely create on the stack or statically (like they currently are.) Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/driver.c')
-rw-r--r--drivers/base/driver.c40
1 files changed, 26 insertions, 14 deletions
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 633ae1d70e14..5aacff208f21 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -3,6 +3,8 @@
*
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
+ * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (c) 2007 Novell Inc.
*
* This file is released under the GPLv2
*
@@ -15,7 +17,6 @@
#include "base.h"
#define to_dev(node) container_of(node, struct device, driver_list)
-#define to_drv(obj) container_of(obj, struct device_driver, kobj)
static struct device * next_device(struct klist_iter * i)
@@ -44,7 +45,7 @@ int driver_for_each_device(struct device_driver * drv, struct device * start,
if (!drv)
return -EINVAL;
- klist_iter_init_node(&drv->klist_devices, &i,
+ klist_iter_init_node(&drv->p->klist_devices, &i,
start ? &start->knode_driver : NULL);
while ((dev = next_device(&i)) && !error)
error = fn(dev, data);
@@ -80,7 +81,7 @@ struct device * driver_find_device(struct device_driver *drv,
if (!drv)
return NULL;
- klist_iter_init_node(&drv->klist_devices, &i,
+ klist_iter_init_node(&drv->p->klist_devices, &i,
(start ? &start->knode_driver : NULL));
while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev))
@@ -100,7 +101,7 @@ int driver_create_file(struct device_driver * drv, struct driver_attribute * att
{
int error;
if (get_driver(drv)) {
- error = sysfs_create_file(&drv->kobj, &attr->attr);
+ error = sysfs_create_file(&drv->p->kobj, &attr->attr);
put_driver(drv);
} else
error = -EINVAL;
@@ -117,7 +118,7 @@ int driver_create_file(struct device_driver * drv, struct driver_attribute * att
void driver_remove_file(struct device_driver * drv, struct driver_attribute * attr)
{
if (get_driver(drv)) {
- sysfs_remove_file(&drv->kobj, &attr->attr);
+ sysfs_remove_file(&drv->p->kobj, &attr->attr);
put_driver(drv);
}
}
@@ -143,7 +144,7 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
if (!name)
return -ENOMEM;
- return kobject_add_ng(kobj, &drv->kobj, "%s", name);
+ return kobject_add_ng(kobj, &drv->p->kobj, "%s", name);
}
EXPORT_SYMBOL_GPL(driver_add_kobj);
@@ -153,7 +154,15 @@ EXPORT_SYMBOL_GPL(driver_add_kobj);
*/
struct device_driver * get_driver(struct device_driver * drv)
{
- return drv ? to_drv(kobject_get(&drv->kobj)) : NULL;
+ if (drv) {
+ struct driver_private *priv;
+ struct kobject *kobj;
+
+ kobj = kobject_get(&drv->p->kobj);
+ priv = to_driver(kobj);
+ return priv->driver;
+ }
+ return NULL;
}
@@ -163,7 +172,7 @@ struct device_driver * get_driver(struct device_driver * drv)
*/
void put_driver(struct device_driver * drv)
{
- kobject_put(&drv->kobj);
+ kobject_put(&drv->p->kobj);
}
static int driver_add_groups(struct device_driver *drv,
@@ -174,10 +183,10 @@ static int driver_add_groups(struct device_driver *drv,
if (groups) {
for (i = 0; groups[i]; i++) {
- error = sysfs_create_group(&drv->kobj, groups[i]);
+ error = sysfs_create_group(&drv->p->kobj, groups[i]);
if (error) {
while (--i >= 0)
- sysfs_remove_group(&drv->kobj,
+ sysfs_remove_group(&drv->p->kobj,
groups[i]);
break;
}
@@ -193,7 +202,7 @@ static void driver_remove_groups(struct device_driver *drv,
if (groups)
for (i = 0; groups[i]; i++)
- sysfs_remove_group(&drv->kobj, groups[i]);
+ sysfs_remove_group(&drv->p->kobj, groups[i]);
}
@@ -214,7 +223,6 @@ int driver_register(struct device_driver * drv)
(drv->bus->shutdown && drv->shutdown)) {
printk(KERN_WARNING "Driver '%s' needs updating - please use bus_type methods\n", drv->name);
}
- klist_init(&drv->klist_devices, NULL, NULL);
ret = bus_add_driver(drv);
if (ret)
return ret;
@@ -250,8 +258,12 @@ void driver_unregister(struct device_driver * drv)
struct device_driver *driver_find(const char *name, struct bus_type *bus)
{
struct kobject *k = kset_find_obj(bus->p->drivers_kset, name);
- if (k)
- return to_drv(k);
+ struct driver_private *priv;
+
+ if (k) {
+ priv = to_driver(k);
+ return priv->driver;
+ }
return NULL;
}