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

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This commit is contained in:
Linus Torvalds
2005-10-28 13:09:47 -07:00
parent 8caf89157d 6fbfddcb52
commit 84860bf064
244 changed files with 5575 additions and 5209 deletions
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Documentation/Changes
+1 -1
View File
@@ -65,7 +65,7 @@ o isdn4k-utils 3.1pre1 # isdnctrl 2>&1|grep version
o nfs-utils 1.0.5 # showmount --version
o procps 3.2.0 # ps --version
o oprofile 0.9 # oprofiled --version
o udev 058 # udevinfo -V
o udev 071 # udevinfo -V
Kernel compilation
==================
Documentation/DocBook/writing_usb_driver.tmpl
+1 -2
View File
@@ -345,8 +345,7 @@ if (!retval) {
<programlisting>
static inline void skel_delete (struct usb_skel *dev)
{
if (dev->bulk_in_buffer != NULL)
kfree (dev->bulk_in_buffer);
kfree (dev->bulk_in_buffer);
if (dev->bulk_out_buffer != NULL)
usb_buffer_free (dev->udev, dev->bulk_out_size,
dev->bulk_out_buffer,
Documentation/driver-model/driver.txt
+6 -62
View File
@@ -14,8 +14,8 @@ struct device_driver {
int (*probe) (struct device * dev);
int (*remove) (struct device * dev);
int (*suspend) (struct device * dev, pm_message_t state, u32 level);
int (*resume) (struct device * dev, u32 level);
int (*suspend) (struct device * dev, pm_message_t state);
int (*resume) (struct device * dev);
};
@@ -194,69 +194,13 @@ device; i.e. anything in the device's driver_data field.
If the device is still present, it should quiesce the device and place
it into a supported low-power state.
int (*suspend) (struct device * dev, pm_message_t state, u32 level);
int (*suspend) (struct device * dev, pm_message_t state);
suspend is called to put the device in a low power state. There are
several stages to successfully suspending a device, which is denoted in
the @level parameter. Breaking the suspend transition into several
stages affords the platform flexibility in performing device power
management based on the requirements of the system and the
user-defined policy.
suspend is called to put the device in a low power state.
SUSPEND_NOTIFY notifies the device that a suspend transition is about
to happen. This happens on system power state transitions to verify
that all devices can successfully suspend.
int (*resume) (struct device * dev);
A driver may choose to fail on this call, which should cause the
entire suspend transition to fail. A driver should fail only if it
knows that the device will not be able to be resumed properly when the
system wakes up again. It could also fail if it somehow determines it
is in the middle of an operation too important to stop.
SUSPEND_DISABLE tells the device to stop I/O transactions. When it
stops transactions, or what it should do with unfinished transactions
is a policy of the driver. After this call, the driver should not
accept any other I/O requests.
SUSPEND_SAVE_STATE tells the device to save the context of the
hardware. This includes any bus-specific hardware state and
device-specific hardware state. A pointer to this saved state can be
stored in the device's saved_state field.
SUSPEND_POWER_DOWN tells the driver to place the device in the low
power state requested.
Whether suspend is called with a given level is a policy of the
platform. Some levels may be omitted; drivers must not assume the
reception of any level. However, all levels must be called in the
order above; i.e. notification will always come before disabling;
disabling the device will come before suspending the device.
All calls are made with interrupts enabled, except for the
SUSPEND_POWER_DOWN level.
int (*resume) (struct device * dev, u32 level);
Resume is used to bring a device back from a low power state. Like the
suspend transition, it happens in several stages.
RESUME_POWER_ON tells the driver to set the power state to the state
before the suspend call (The device could have already been in a low
power state before the suspend call to put in a lower power state).
RESUME_RESTORE_STATE tells the driver to restore the state saved by
the SUSPEND_SAVE_STATE suspend call.
RESUME_ENABLE tells the driver to start accepting I/O transactions
again. Depending on driver policy, the device may already have pending
I/O requests.
RESUME_POWER_ON is called with interrupts disabled. The other resume
levels are called with interrupts enabled.
As with the various suspend stages, the driver must not assume that
any other resume calls have been or will be made. Each call should be
self-contained and not dependent on any external state.
Resume is used to bring a device back from a low power state.
Attributes
Documentation/driver-model/porting.txt
+1 -1
View File
@@ -350,7 +350,7 @@ When a driver is registered, the bus's list of devices is iterated
over. bus->match() is called for each device that is not already
claimed by a driver.
When a device is successfully bound to a device, device->driver is
When a device is successfully bound to a driver, device->driver is
set, the device is added to a per-driver list of devices, and a
symlink is created in the driver's sysfs directory that points to the
device's physical directory:
arch/arm/common/locomo.c
+2 -8
View File
@@ -550,15 +550,12 @@ struct locomo_save_data {
u16 LCM_SPIMD;
};
static int locomo_suspend(struct device *dev, pm_message_t state, u32 level)
static int locomo_suspend(struct device *dev, pm_message_t state)
{
struct locomo *lchip = dev_get_drvdata(dev);
struct locomo_save_data *save;
unsigned long flags;
if (level != SUSPEND_DISABLE)
return 0;
save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL);
if (!save)
return -ENOMEM;
@@ -597,16 +594,13 @@ static int locomo_suspend(struct device *dev, pm_message_t state, u32 level)
return 0;
}
static int locomo_resume(struct device *dev, u32 level)
static int locomo_resume(struct device *dev)
{
struct locomo *lchip = dev_get_drvdata(dev);
struct locomo_save_data *save;
unsigned long r;
unsigned long flags;
if (level != RESUME_ENABLE)
return 0;
save = (struct locomo_save_data *) dev->power.saved_state;
if (!save)
return 0;
arch/arm/common/sa1111.c
+2 -9
View File
@@ -801,7 +801,7 @@ struct sa1111_save_data {
#ifdef CONFIG_PM
static int sa1111_suspend(struct device *dev, pm_message_t state, u32 level)
static int sa1111_suspend(struct device *dev, pm_message_t state)
{
struct sa1111 *sachip = dev_get_drvdata(dev);
struct sa1111_save_data *save;
@@ -809,9 +809,6 @@ static int sa1111_suspend(struct device *dev, pm_message_t state, u32 level)
unsigned int val;
void __iomem *base;
if (level != SUSPEND_DISABLE)
return 0;
save = kmalloc(sizeof(struct sa1111_save_data), GFP_KERNEL);
if (!save)
return -ENOMEM;
@@ -856,23 +853,19 @@ static int sa1111_suspend(struct device *dev, pm_message_t state, u32 level)
/*
* sa1111_resume - Restore the SA1111 device state.
* @dev: device to restore
* @level: resume level
*
* Restore the general state of the SA1111; clock control and
* interrupt controller. Other parts of the SA1111 must be
* restored by their respective drivers, and must be called
* via LDM after this function.
*/
static int sa1111_resume(struct device *dev, u32 level)
static int sa1111_resume(struct device *dev)
{
struct sa1111 *sachip = dev_get_drvdata(dev);
struct sa1111_save_data *save;
unsigned long flags, id;
void __iomem *base;
if (level != RESUME_ENABLE)
return 0;
save = (struct sa1111_save_data *)dev->power.saved_state;
if (!save)
return 0;
arch/arm/common/scoop.c
+11 -13
View File
@@ -102,26 +102,24 @@ static void check_scoop_reg(struct scoop_dev *sdev)
}
#ifdef CONFIG_PM
static int scoop_suspend(struct device *dev, pm_message_t state, uint32_t level)
static int scoop_suspend(struct device *dev, pm_message_t state)
{
if (level == SUSPEND_POWER_DOWN) {
struct scoop_dev *sdev = dev_get_drvdata(dev);
struct scoop_dev *sdev = dev_get_drvdata(dev);
check_scoop_reg(sdev);
sdev->scoop_gpwr = SCOOP_REG(sdev->base, SCOOP_GPWR);
SCOOP_REG(sdev->base, SCOOP_GPWR) = (sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set;
check_scoop_reg(sdev);
sdev->scoop_gpwr = SCOOP_REG(sdev->base, SCOOP_GPWR);
SCOOP_REG(sdev->base, SCOOP_GPWR) = (sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set;
}
return 0;
}
static int scoop_resume(struct device *dev, uint32_t level)
static int scoop_resume(struct device *dev)
{
if (level == RESUME_POWER_ON) {
struct scoop_dev *sdev = dev_get_drvdata(dev);
struct scoop_dev *sdev = dev_get_drvdata(dev);
check_scoop_reg(sdev);
SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr;
check_scoop_reg(sdev);
SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr;
}
return 0;
}
#else
arch/arm/mach-pxa/corgi_ssp.c
+11 -13
View File
@@ -222,24 +222,22 @@ static int corgi_ssp_remove(struct device *dev)
return 0;
}
static int corgi_ssp_suspend(struct device *dev, pm_message_t state, u32 level)
static int corgi_ssp_suspend(struct device *dev, pm_message_t state)
{
if (level == SUSPEND_POWER_DOWN) {
ssp_flush(&corgi_ssp_dev);
ssp_save_state(&corgi_ssp_dev,&corgi_ssp_state);
}
ssp_flush(&corgi_ssp_dev);
ssp_save_state(&corgi_ssp_dev,&corgi_ssp_state);
return 0;
}
static int corgi_ssp_resume(struct device *dev, u32 level)
static int corgi_ssp_resume(struct device *dev)
{
if (level == RESUME_POWER_ON) {
GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */
GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/
ssp_restore_state(&corgi_ssp_dev,&corgi_ssp_state);
ssp_enable(&corgi_ssp_dev);
}
GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */
GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/
ssp_restore_state(&corgi_ssp_dev,&corgi_ssp_state);
ssp_enable(&corgi_ssp_dev);
return 0;
}
arch/arm/mach-sa1100/neponset.c
+11 -17
View File
@@ -178,33 +178,27 @@ static int neponset_probe(struct device *dev)
/*
* LDM power management.
*/
static int neponset_suspend(struct device *dev, pm_message_t state, u32 level)
static int neponset_suspend(struct device *dev, pm_message_t state)
{
/*
* Save state.
*/
if (level == SUSPEND_SAVE_STATE ||
level == SUSPEND_DISABLE ||
level == SUSPEND_POWER_DOWN) {
if (!dev->power.saved_state)
dev->power.saved_state = kmalloc(sizeof(unsigned int), GFP_KERNEL);
if (!dev->power.saved_state)
return -ENOMEM;
if (!dev->power.saved_state)
dev->power.saved_state = kmalloc(sizeof(unsigned int), GFP_KERNEL);
if (!dev->power.saved_state)
return -ENOMEM;
*(unsigned int *)dev->power.saved_state = NCR_0;
}
*(unsigned int *)dev->power.saved_state = NCR_0;
return 0;
}
static int neponset_resume(struct device *dev, u32 level)
static int neponset_resume(struct device *dev)
{
if (level == RESUME_RESTORE_STATE || level == RESUME_ENABLE) {
if (dev->power.saved_state) {
NCR_0 = *(unsigned int *)dev->power.saved_state;
kfree(dev->power.saved_state);
dev->power.saved_state = NULL;
}
if (dev->power.saved_state) {
NCR_0 = *(unsigned int *)dev->power.saved_state;
kfree(dev->power.saved_state);
dev->power.saved_state = NULL;
}
return 0;
arch/i386/kernel/cpuid.c
+1 -1
View File
@@ -163,7 +163,7 @@ static int cpuid_class_device_create(int i)
int err = 0;
struct class_device *class_err;
class_err = class_device_create(cpuid_class, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i);
class_err = class_device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i);
if (IS_ERR(class_err))
err = PTR_ERR(class_err);
return err;
arch/i386/kernel/msr.c
+1 -1
View File
@@ -246,7 +246,7 @@ static int msr_class_device_create(int i)
int err = 0;
struct class_device *class_err;
class_err = class_device_create(msr_class, MKDEV(MSR_MAJOR, i), NULL, "msr%d",i);
class_err = class_device_create(msr_class, NULL, MKDEV(MSR_MAJOR, i), NULL, "msr%d",i);
if (IS_ERR(class_err))
err = PTR_ERR(class_err);
return err;
drivers/base/attribute_container.c
+2
View File
@@ -19,6 +19,8 @@
#include <linux/list.h>
#include <linux/module.h>
#include "base.h"
/* This is a private structure used to tie the classdev and the
* container .. it should never be visible outside this file */
struct internal_container {
drivers/base/base.h
+12
View File
@@ -1,3 +1,15 @@
/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);
extern int classes_init(void);
extern int firmware_init(void);
extern int platform_bus_init(void);
extern int system_bus_init(void);
extern int cpu_dev_init(void);
extern int attribute_container_init(void);
extern int bus_add_device(struct device * dev);
extern void bus_remove_device(struct device * dev);
drivers/base/class.c
+102 -52
View File
@@ -99,7 +99,8 @@ struct class * class_get(struct class * cls)
void class_put(struct class * cls)
{
subsys_put(&cls->subsys);
if (cls)
subsys_put(&cls->subsys);
}
@@ -165,14 +166,25 @@ void class_unregister(struct class * cls)
static void class_create_release(struct class *cls)
{
pr_debug("%s called for %s\n", __FUNCTION__, cls->name);
kfree(cls);
}
static void class_device_create_release(struct class_device *class_dev)
{
pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id);
kfree(class_dev);
}
/* needed to allow these devices to have parent class devices */
static int class_device_create_hotplug(struct class_device *class_dev,
char **envp, int num_envp,
char *buffer, int buffer_size)
{
pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id);
return 0;
}
/**
* class_create - create a struct class structure
* @owner: pointer to the module that is to "own" this struct class
@@ -301,10 +313,12 @@ static void class_dev_release(struct kobject * kobj)
kfree(cd->devt_attr);
cd->devt_attr = NULL;
if (cls->release)
if (cd->release)
cd->release(cd);
else if (cls->release)
cls->release(cd);
else {
printk(KERN_ERR "Device class '%s' does not have a release() function, "
printk(KERN_ERR "Class Device '%s' does not have a release() function, "
"it is broken and must be fixed.\n",
cd->class_id);
WARN_ON(1);
@@ -382,14 +396,18 @@ static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
buffer = &buffer[length];
buffer_size -= length;
if (class_dev->class->hotplug) {
/* have the bus specific function add its stuff */
retval = class_dev->class->hotplug (class_dev, envp, num_envp,
buffer, buffer_size);
if (retval) {
pr_debug ("%s - hotplug() returned %d\n",
__FUNCTION__, retval);
}
if (class_dev->hotplug) {
/* have the class device specific function add its stuff */
retval = class_dev->hotplug(class_dev, envp, num_envp,
buffer, buffer_size);
if (retval)
pr_debug("class_dev->hotplug() returned %d\n", retval);
} else if (class_dev->class->hotplug) {
/* have the class specific function add its stuff */
retval = class_dev->class->hotplug(class_dev, envp, num_envp,
buffer, buffer_size);
if (retval)
pr_debug("class->hotplug() returned %d\n", retval);
}
return retval;
@@ -442,6 +460,13 @@ static ssize_t show_dev(struct class_device *class_dev, char *buf)
return print_dev_t(buf, class_dev->devt);
}
static ssize_t store_uevent(struct class_device *class_dev,
const char *buf, size_t count)
{
kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
return count;
}
void class_device_initialize(struct class_device *class_dev)
{
kobj_set_kset_s(class_dev, class_obj_subsys);
@@ -469,34 +494,45 @@ static char *make_class_name(struct class_device *class_dev)
int class_device_add(struct class_device *class_dev)
{
struct class * parent = NULL;
struct class_interface * class_intf;
struct class *parent_class = NULL;
struct class_device *parent_class_dev = NULL;
struct class_interface *class_intf;
char *class_name = NULL;
int error;
int error = -EINVAL;
class_dev = class_device_get(class_dev);
if (!class_dev)
return -EINVAL;
if (!strlen(class_dev->class_id)) {
error = -EINVAL;
if (!strlen(class_dev->class_id))
goto register_done;
}
parent = class_get(class_dev->class);
parent_class = class_get(class_dev->class);
if (!parent_class)
goto register_done;
parent_class_dev = class_device_get(class_dev->parent);
pr_debug("CLASS: registering class device: ID = '%s'\n",
class_dev->class_id);
/* first, register with generic layer. */
kobject_set_name(&class_dev->kobj, "%s", class_dev->class_id);
if (parent)
class_dev->kobj.parent = &parent->subsys.kset.kobj;
if (parent_class_dev)
class_dev->kobj.parent = &parent_class_dev->kobj;
else
class_dev->kobj.parent = &parent_class->subsys.kset.kobj;
if ((error = kobject_add(&class_dev->kobj)))
error = kobject_add(&class_dev->kobj);
if (error)
goto register_done;
/* add the needed attributes to this device */
class_dev->uevent_attr.attr.name = "uevent";
class_dev->uevent_attr.attr.mode = S_IWUSR;
class_dev->uevent_attr.attr.owner = parent_class->owner;
class_dev->uevent_attr.store = store_uevent;
class_device_create_file(class_dev, &class_dev->uevent_attr);
if (MAJOR(class_dev->devt)) {
struct class_device_attribute *attr;
attr = kzalloc(sizeof(*attr), GFP_KERNEL);
@@ -505,12 +541,10 @@ int class_device_add(struct class_device *class_dev)
kobject_del(&class_dev->kobj);
goto register_done;
}
attr->attr.name = "dev";
attr->attr.mode = S_IRUGO;
attr->attr.owner = parent->owner;
attr->attr.owner = parent_class->owner;
attr->show = show_dev;
attr->store = NULL;
class_device_create_file(class_dev, attr);
class_dev->devt_attr = attr;
}
@@ -524,20 +558,23 @@ int class_device_add(struct class_device *class_dev)
class_name);
}
/* notify any interfaces this device is now here */
if (parent) {
down(&parent->sem);
list_add_tail(&class_dev->node, &parent->children);
list_for_each_entry(class_intf, &parent->interfaces, node)
if (class_intf->add)
class_intf->add(class_dev);
up(&parent->sem);
}
kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
/* notify any interfaces this device is now here */
if (parent_class) {
down(&parent_class->sem);
list_add_tail(&class_dev->node, &parent_class->children);
list_for_each_entry(class_intf, &parent_class->interfaces, node)
if (class_intf->add)
class_intf->add(class_dev, class_intf);
up(&parent_class->sem);
}
register_done:
if (error && parent)
class_put(parent);
if (error) {
class_put(parent_class);
class_device_put(parent_class_dev);
}
class_device_put(class_dev);
kfree(class_name);
return error;
@@ -552,21 +589,28 @@ int class_device_register(struct class_device *class_dev)
/**
* class_device_create - creates a class device and registers it with sysfs
* @cs: pointer to the struct class that this device should be registered to.
* @parent: pointer to the parent struct class_device of this new device, if any.
* @dev: the dev_t for the char device to be added.
* @device: a pointer to a struct device that is assiociated with this class device.
* @fmt: string for the class device's name
*
* This function can be used by char device classes. A struct
* class_device will be created in sysfs, registered to the specified
* class. A "dev" file will be created, showing the dev_t for the
* device. The pointer to the struct class_device will be returned from
* the call. Any further sysfs files that might be required can be
* created using this pointer.
* class.
* A "dev" file will be created, showing the dev_t for the device, if
* the dev_t is not 0,0.
* If a pointer to a parent struct class_device is passed in, the newly
* created struct class_device will be a child of that device in sysfs.
* The pointer to the struct class_device will be returned from the
* call. Any further sysfs files that might be required can be created
* using this pointer.
*
* Note: the struct class passed to this function must have previously
* been created with a call to class_create().
*/
struct class_device *class_device_create(struct class *cls, dev_t devt,
struct class_device *class_device_create(struct class *cls,
struct class_device *parent,
dev_t devt,
struct device *device, char *fmt, ...)
{
va_list args;
@@ -585,6 +629,9 @@ struct class_device *class_device_create(struct class *cls, dev_t devt,
class_dev->devt = devt;
class_dev->dev = device;
class_dev->class = cls;
class_dev->parent = parent;
class_dev->release = class_device_create_release;
class_dev->hotplug = class_device_create_hotplug;
va_start(args, fmt);
vsnprintf(class_dev->class_id, BUS_ID_SIZE, fmt, args);
@@ -602,17 +649,18 @@ error:
void class_device_del(struct class_device *class_dev)
{
struct class * parent = class_dev->class;
struct class_interface * class_intf;
struct class *parent_class = class_dev->class;
struct class_device *parent_device = class_dev->parent;
struct class_interface *class_intf;
char *class_name = NULL;
if (parent) {
down(&parent->sem);
if (parent_class) {
down(&parent_class->sem);
list_del_init(&class_dev->node);
list_for_each_entry(class_intf, &parent->interfaces, node)
list_for_each_entry(class_intf, &parent_class->interfaces, node)
if (class_intf->remove)
class_intf->remove(class_dev);
up(&parent->sem);
class_intf->remove(class_dev, class_intf);
up(&parent_class->sem);
}
if (class_dev->dev) {
@@ -620,6 +668,7 @@ void class_device_del(struct class_device *class_dev)
sysfs_remove_link(&class_dev->kobj, "device");
sysfs_remove_link(&class_dev->dev->kobj, class_name);
}
class_device_remove_file(class_dev, &class_dev->uevent_attr);
if (class_dev->devt_attr)
class_device_remove_file(class_dev, class_dev->devt_attr);
class_device_remove_attrs(class_dev);
@@ -627,8 +676,8 @@ void class_device_del(struct class_device *class_dev)
kobject_hotplug(&class_dev->kobj, KOBJ_REMOVE);
kobject_del(&class_dev->kobj);
if (parent)
class_put(parent);
class_device_put(parent_device);
class_put(parent_class);
kfree(class_name);
}
@@ -708,7 +757,8 @@ struct class_device * class_device_get(struct class_device *class_dev)
void class_device_put(struct class_device *class_dev)
{
kobject_put(&class_dev->kobj);
if (class_dev)
kobject_put(&class_dev->kobj);
}
@@ -728,7 +778,7 @@ int class_interface_register(struct class_interface *class_intf)
list_add_tail(&class_intf->node, &parent->interfaces);
if (class_intf->add) {
list_for_each_entry(class_dev, &parent->children, node)
class_intf->add(class_dev);
class_intf->add(class_dev, class_intf);
}
up(&parent->sem);
@@ -747,7 +797,7 @@ void class_interface_unregister(struct class_interface *class_intf)
list_del_init(&class_intf->node);
if (class_intf->remove) {
list_for_each_entry(class_dev, &parent->children, node)
class_intf->remove(class_dev);
class_intf->remove(class_dev, class_intf);
}
up(&parent->sem);
drivers/base/core.c
+19 -2
View File
@@ -154,6 +154,13 @@ static struct kset_hotplug_ops device_hotplug_ops = {
.hotplug = dev_hotplug,
};
static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
kobject_hotplug(&dev->kobj, KOBJ_ADD);
return count;
}
/**
* device_subsys - structure to be registered with kobject core.
*/
@@ -225,6 +232,7 @@ void device_initialize(struct device *dev)
klist_children_put);
INIT_LIST_HEAD(&dev->dma_pools);
init_MUTEX(&dev->sem);
device_init_wakeup(dev, 0);
}
/**
@@ -258,6 +266,14 @@ int device_add(struct device *dev)
if ((error = kobject_add(&dev->kobj)))
goto Error;
dev->uevent_attr.attr.name = "uevent";
dev->uevent_attr.attr.mode = S_IWUSR;
if (dev->driver)
dev->uevent_attr.attr.owner = dev->driver->owner;
dev->uevent_attr.store = store_uevent;
device_create_file(dev, &dev->uevent_attr);
kobject_hotplug(&dev->kobj, KOBJ_ADD);
if ((error = device_pm_add(dev)))
goto PMError;
@@ -349,6 +365,7 @@ void device_del(struct device * dev)
if (parent)
klist_del(&dev->knode_parent);
device_remove_file(dev, &dev->uevent_attr);
/* Notify the platform of the removal, in case they
* need to do anything...
@@ -390,11 +407,11 @@ static struct device * next_device(struct klist_iter * i)
/**
* device_for_each_child - device child iterator.
* @dev: parent struct device.
* @parent: parent struct device.
* @data: data for the callback.
* @fn: function to be called for each device.
*
* Iterate over @dev's child devices, and call @fn for each,
* Iterate over @parent's child devices, and call @fn for each,
* passing it @data.
*
* We check the return of @fn each time. If it returns anything
drivers/base/cpu.c
+1
View File
@@ -9,6 +9,7 @@
#include <linux/topology.h>
#include <linux/device.h>
#include "base.h"
struct sysdev_class cpu_sysdev_class = {
set_kset_name("cpu"),
drivers/base/driver.c
+2 -1
View File
@@ -28,6 +28,7 @@ static struct device * next_device(struct klist_iter * i)
/**
* driver_for_each_device - Iterator for devices bound to a driver.
* @drv: Driver we're iterating.
* @start: Device to begin with
* @data: Data to pass to the callback.
* @fn: Function to call for each device.
*
@@ -57,7 +58,7 @@ EXPORT_SYMBOL_GPL(driver_for_each_device);
/**
* driver_find_device - device iterator for locating a particular device.
* @driver: The device's driver
* @drv: The device's driver
* @start: Device to begin with
* @data: Data to pass to match function
* @match: Callback function to check device
drivers/base/firmware.c
+3
View File
@@ -11,6 +11,9 @@
#include <linux/kobject.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include "base.h"
static decl_subsys(firmware, NULL, NULL);
drivers/base/init.c
+2 -8
View File
@@ -10,14 +10,8 @@
#include <linux/device.h>
#include <linux/init.h>
extern int devices_init(void);
extern int buses_init(void);
extern int classes_init(void);
extern int firmware_init(void);
extern int platform_bus_init(void);
extern int system_bus_init(void);
extern int cpu_dev_init(void);
extern int attribute_container_init(void);
#include "base.h"
/**
* driver_init - initialize driver model.
*
drivers/base/platform.c
+8 -14
View File
@@ -17,6 +17,8 @@
#include <linux/bootmem.h>
#include <linux/err.h>
#include "base.h"
struct device platform_bus = {
.bus_id = "platform",
};
@@ -279,13 +281,9 @@ static int platform_suspend(struct device * dev, pm_message_t state)
{
int ret = 0;
if (dev->driver && dev->driver->suspend) {
ret = dev->driver->suspend(dev, state, SUSPEND_DISABLE);
if (ret == 0)
ret = dev->driver->suspend(dev, state, SUSPEND_SAVE_STATE);
if (ret == 0)
ret = dev->driver->suspend(dev, state, SUSPEND_POWER_DOWN);
}
if (dev->driver && dev->driver->suspend)
ret = dev->driver->suspend(dev, state);
return ret;
}
@@ -293,13 +291,9 @@ static int platform_resume(struct device * dev)
{
int ret = 0;
if (dev->driver && dev->driver->resume) {
ret = dev->driver->resume(dev, RESUME_POWER_ON);
if (ret == 0)
ret = dev->driver->resume(dev, RESUME_RESTORE_STATE);
if (ret == 0)
ret = dev->driver->resume(dev, RESUME_ENABLE);
}
if (dev->driver && dev->driver->resume)
ret = dev->driver->resume(dev);
return ret;
}

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