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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
  PPC: Fix powerpc vio_find_name to not use devices_subsys
  Driver core: add bus_find_device_by_name function
  Module: check to see if we have a built in module with the same name
  x86: fix runtime error in arch/x86/kernel/cpu/mcheck/mce_amd_64.c
  Driver core: Fix up build when CONFIG_BLOCK=N
This commit is contained in:
Linus Torvalds 2008-01-31 09:31:37 +11:00
commit 3b470ac43f
5 changed files with 56 additions and 33 deletions
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13
arch/powerpc/kernel/vio.c
View File

@ -37,8 +37,6 @@
#include <asm/iseries/hv_call_xm.h>
#include <asm/iseries/iommu.h>
extern struct kset devices_subsys; /* needed for vio_find_name() */
static struct bus_type vio_bus_type;
static struct vio_dev vio_bus_device = { /* fake "parent" device */
@ -361,19 +359,16 @@ EXPORT_SYMBOL(vio_get_attribute);
#ifdef CONFIG_PPC_PSERIES
/* vio_find_name() - internal because only vio.c knows how we formatted the
* kobject name
* XXX once vio_bus_type.devices is actually used as a kset in
* drivers/base/bus.c, this function should be removed in favor of
* "device_find(kobj_name, &vio_bus_type)"
*/
static struct vio_dev *vio_find_name(const char *kobj_name)
static struct vio_dev *vio_find_name(const char *name)
{
struct kobject *found;
struct device *found;
found = kset_find_obj(&devices_subsys, kobj_name);
found = bus_find_device_by_name(&vio_bus_type, NULL, name);
if (!found)
return NULL;
return to_vio_dev(container_of(found, struct device, kobj));
return to_vio_dev(found);
}
/**

41
drivers/base/bus.c
View File

@ -163,15 +163,6 @@ static struct kset *bus_kset;
#ifdef CONFIG_HOTPLUG
/* Manually detach a device from its associated driver. */
static int driver_helper(struct device *dev, void *data)
{
const char *name = data;
if (strcmp(name, dev->bus_id) == 0)
return 1;
return 0;
}
static ssize_t driver_unbind(struct device_driver *drv,
const char *buf, size_t count)
{
@ -179,7 +170,7 @@ static ssize_t driver_unbind(struct device_driver *drv,
struct device *dev;
int err = -ENODEV;
dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
dev = bus_find_device_by_name(bus, NULL, buf);
if (dev && dev->driver == drv) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
@ -206,7 +197,7 @@ static ssize_t driver_bind(struct device_driver *drv,
struct device *dev;
int err = -ENODEV;
dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
dev = bus_find_device_by_name(bus, NULL, buf);
if (dev && dev->driver == NULL) {
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
@ -250,7 +241,7 @@ static ssize_t store_drivers_probe(struct bus_type *bus,
{
struct device *dev;
dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
dev = bus_find_device_by_name(bus, NULL, buf);
if (!dev)
return -ENODEV;
if (bus_rescan_devices_helper(dev, NULL) != 0)
@ -338,6 +329,32 @@ struct device *bus_find_device(struct bus_type *bus,
}
EXPORT_SYMBOL_GPL(bus_find_device);
static int match_name(struct device *dev, void *data)
{
const char *name = data;
if (strcmp(name, dev->bus_id) == 0)
return 1;
return 0;
}
/**
* bus_find_device_by_name - device iterator for locating a particular device of a specific name
* @bus: bus type
* @start: Device to begin with
* @name: name of the device to match
*
* This is similar to the bus_find_device() function above, but it handles
* searching by a name automatically, no need to write another strcmp matching
* function.
*/
struct device *bus_find_device_by_name(struct bus_type *bus,
struct device *start, const char *name)
{
return bus_find_device(bus, start, (void *)name, match_name);
}
EXPORT_SYMBOL_GPL(bus_find_device_by_name);
static struct device_driver *next_driver(struct klist_iter *i)
{
struct klist_node *n = klist_next(i);

2
drivers/base/class.c
View File

@ -149,7 +149,7 @@ int class_register(struct class *cls)
if (error)
return error;
#ifdef CONFIG_SYSFS_DEPRECATED
#if defined(CONFIG_SYSFS_DEPRECATED) && defined(CONFIG_BLOCK)
/* let the block class directory show up in the root of sysfs */
if (cls != &block_class)
cls->subsys.kobj.kset = class_kset;

30
drivers/base/core.c
View File

@ -27,9 +27,17 @@
int (*platform_notify)(struct device *dev) = NULL;
int (*platform_notify_remove)(struct device *dev) = NULL;
/*
* sysfs bindings for devices.
*/
#ifdef CONFIG_BLOCK
static inline int device_is_not_partition(struct device *dev)
{
return !(dev->type == &part_type);
}
#else
static inline int device_is_not_partition(struct device *dev)
{
return 1;
}
#endif
/**
* dev_driver_string - Return a device's driver name, if at all possible
@ -652,14 +660,14 @@ static int device_add_class_symlinks(struct device *dev)
#ifdef CONFIG_SYSFS_DEPRECATED
/* stacked class devices need a symlink in the class directory */
if (dev->kobj.parent != &dev->class->subsys.kobj &&
dev->type != &part_type) {
device_is_not_partition(dev)) {
error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
dev->bus_id);
if (error)
goto out_subsys;
}
if (dev->parent && dev->type != &part_type) {
if (dev->parent && device_is_not_partition(dev)) {
struct device *parent = dev->parent;
char *class_name;
@ -688,11 +696,11 @@ static int device_add_class_symlinks(struct device *dev)
return 0;
out_device:
if (dev->parent && dev->type != &part_type)
if (dev->parent && device_is_not_partition(dev))
sysfs_remove_link(&dev->kobj, "device");
out_busid:
if (dev->kobj.parent != &dev->class->subsys.kobj &&
dev->type != &part_type)
device_is_not_partition(dev))
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
#else
/* link in the class directory pointing to the device */
@ -701,7 +709,7 @@ out_busid:
if (error)
goto out_subsys;
if (dev->parent && dev->type != &part_type) {
if (dev->parent && device_is_not_partition(dev)) {
error = sysfs_create_link(&dev->kobj, &dev->parent->kobj,
"device");
if (error)
@ -725,7 +733,7 @@ static void device_remove_class_symlinks(struct device *dev)
return;
#ifdef CONFIG_SYSFS_DEPRECATED
if (dev->parent && dev->type != &part_type) {
if (dev->parent && device_is_not_partition(dev)) {
char *class_name;
class_name = make_class_name(dev->class->name, &dev->kobj);
@ -737,10 +745,10 @@ static void device_remove_class_symlinks(struct device *dev)
}
if (dev->kobj.parent != &dev->class->subsys.kobj &&
dev->type != &part_type)
device_is_not_partition(dev))
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
#else
if (dev->parent && dev->type != &part_type)
if (dev->parent && device_is_not_partition(dev))
sysfs_remove_link(&dev->kobj, "device");
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);

3
include/linux/device.h
View File

@ -84,6 +84,9 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
struct device *bus_find_device(struct bus_type *bus, struct device *start,
void *data,
int (*match)(struct device *dev, void *data));
struct device *bus_find_device_by_name(struct bus_type *bus,
struct device *start,
const char *name);
int __must_check bus_for_each_drv(struct bus_type *bus,
struct device_driver *start, void *data,