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

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (28 commits)
  driver core: device_rename's new_name can be const
  sysfs: Remove owner field from sysfs struct attribute
  powerpc/pci: Remove owner field from attribute initialization in PCI bridge init
  regulator: Remove owner field from attribute initialization in regulator core driver
  leds: Remove owner field from attribute initialization in bd2802 driver
  scsi: Remove owner field from attribute initialization in ARCMSR driver
  scsi: Remove owner field from attribute initialization in LPFC driver
  cgroupfs: create /sys/fs/cgroup to mount cgroupfs on
  Driver core: Add BUS_NOTIFY_BIND_DRIVER
  driver core: fix memory leak on one error path in bus_register()
  debugfs: no longer needs to depend on SYSFS
  sysfs: Fix one more signature discrepancy between sysfs implementation and docs.
  sysfs: fix discrepancies between implementation and documentation
  dcdbas: remove a redundant smi_data_buf_free in dcdbas_exit
  dmi-id: fix a memory leak in dmi_id_init error path
  sysfs: sysfs_chmod_file's attr can be const
  firmware: Update hotplug script
  Driver core: move platform device creation helpers to .init.text (if MODULE=n)
  Driver core: reduce duplicated code for platform_device creation
  Driver core: use kmemdup in platform_device_add_resources
  ...
This commit is contained in:
Linus Torvalds 2010-08-06 11:36:30 -07:00
parent c513b67e68 6937e8f8c0
commit ab69bcd66f
26 changed files with 292 additions and 294 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/DocBook/device-drivers.tmpl
View File

@ -111,6 +111,7 @@ X!Edrivers/base/attribute_container.c
<!--
X!Edrivers/base/interface.c
-->
!Iinclude/linux/platform_device.h
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>

46
Documentation/filesystems/sysfs.txt
View File

@ -4,7 +4,7 @@ sysfs - _The_ filesystem for exporting kernel objects.
Patrick Mochel <mochel@osdl.org>
Mike Murphy <mamurph@cs.clemson.edu>
Revised: 22 February 2009
Revised: 15 July 2010
Original: 10 January 2003
@ -124,7 +124,7 @@ show and store methods of the attribute owners.
struct sysfs_ops {
ssize_t (*show)(struct kobject *, struct attribute *, char *);
ssize_t (*store)(struct kobject *, struct attribute *, const char *);
ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t);
};
[ Subsystems should have already defined a struct kobj_type as a
@ -139,18 +139,22 @@ calls the associated methods.
To illustrate:
#define to_dev(obj) container_of(obj, struct device, kobj)
#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
#define to_dev(d) container_of(d, struct device, kobj)
static ssize_t
dev_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct device_attribute * dev_attr = to_dev_attr(attr);
struct device * dev = to_dev(kobj);
ssize_t ret = 0;
struct device_attribute *dev_attr = to_dev_attr(attr);
struct device *dev = to_dev(kobj);
ssize_t ret = -EIO;
if (dev_attr->show)
ret = dev_attr->show(dev, buf);
ret = dev_attr->show(dev, dev_attr, buf);
if (ret >= (ssize_t)PAGE_SIZE) {
print_symbol("dev_attr_show: %s returned bad count\n",
(unsigned long)dev_attr->show);
}
return ret;
}
@ -163,10 +167,9 @@ To read or write attributes, show() or store() methods must be
specified when declaring the attribute. The method types should be as
simple as those defined for device attributes:
ssize_t (*show)(struct device * dev, struct device_attribute * attr,
char * buf);
ssize_t (*store)(struct device * dev, struct device_attribute * attr,
const char * buf);
ssize_t (*show)(struct device *dev, struct device_attribute *attr, char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
IOW, they should take only an object, an attribute, and a buffer as parameters.
@ -209,8 +212,8 @@ Other notes:
- show() should always use snprintf().
- store() should return the number of bytes used from the buffer. This
can be done using strlen().
- store() should return the number of bytes used from the buffer. If the
entire buffer has been used, just return the count argument.
- show() or store() can always return errors. If a bad value comes
through, be sure to return an error.
@ -223,15 +226,18 @@ Other notes:
A very simple (and naive) implementation of a device attribute is:
static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_name(struct device *dev, struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", dev->name);
}
static ssize_t store_name(struct device * dev, const char * buf)
static ssize_t store_name(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
sscanf(buf, "%20s", dev->name);
return strnlen(buf, PAGE_SIZE);
snprintf(dev->name, sizeof(dev->name), "%.*s",
(int)min(count, sizeof(dev->name) - 1), buf);
return count;
}
static DEVICE_ATTR(name, S_IRUGO, show_name, store_name);
@ -327,7 +333,7 @@ Structure:
struct bus_attribute {
struct attribute attr;
ssize_t (*show)(struct bus_type *, char * buf);
ssize_t (*store)(struct bus_type *, const char * buf);
ssize_t (*store)(struct bus_type *, const char * buf, size_t count);
};
Declaring:

17
Documentation/firmware_class/hotplug-script
View File

@ -6,11 +6,12 @@
HOTPLUG_FW_DIR=/usr/lib/hotplug/firmware/
echo 1 > /sys/$DEVPATH/loading
cat $HOTPLUG_FW_DIR/$FIRMWARE > /sys/$DEVPATH/data
echo 0 > /sys/$DEVPATH/loading
# To cancel the load in case of error:
#
# echo -1 > /sys/$DEVPATH/loading
#
if [ "$SUBSYSTEM" == "firmware" -a "$ACTION" == "add" ]; then
if [ -f $HOTPLUG_FW_DIR/$FIRMWARE ]; then
echo 1 > /sys/$DEVPATH/loading
cat $HOTPLUG_FW_DIR/$FIRMWARE > /sys/$DEVPATH/data
echo 0 > /sys/$DEVPATH/loading
else
echo -1 > /sys/$DEVPATH/loading
fi
fi

1
arch/powerpc/sysdev/mv64x60_pci.c
View File

@ -73,7 +73,6 @@ static struct bin_attribute mv64x60_hs_reg_attr = { /* Hotswap register */
.attr = {
.name = "hs_reg",
.mode = S_IRUGO | S_IWUSR,
.owner = THIS_MODULE,
},
.size = MV64X60_VAL_LEN_MAX,
.read = mv64x60_hs_reg_read,

2
drivers/base/bus.c
View File

@ -945,8 +945,8 @@ bus_devices_fail:
bus_remove_file(bus, &bus_attr_uevent);
bus_uevent_fail:
kset_unregister(&bus->p->subsys);
kfree(bus->p);
out:
kfree(bus->p);
bus->p = NULL;
return retval;
}

2
drivers/base/core.c
View File

@ -1599,7 +1599,7 @@ EXPORT_SYMBOL_GPL(device_destroy);
* on the same device to ensure that new_name is valid and
* won't conflict with other devices.
*/
int device_rename(struct device *dev, char *new_name)
int device_rename(struct device *dev, const char *new_name)
{
char *old_class_name = NULL;
char *new_class_name = NULL;

4
drivers/base/dd.c
View File

@ -51,6 +51,10 @@ static int driver_sysfs_add(struct device *dev)
{
int ret;
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_BIND_DRIVER, dev);
ret = sysfs_create_link(&dev->driver->p->kobj, &dev->kobj,
kobject_name(&dev->kobj));
if (ret == 0) {

2
drivers/base/dma-coherent.c
View File

@ -8,7 +8,7 @@
struct dma_coherent_mem {
void *virt_base;
u32 device_base;
dma_addr_t device_base;
int size;
int flags;
unsigned long *bitmap;

268
drivers/base/firmware_class.c
View File

@ -87,29 +87,32 @@ static DEFINE_MUTEX(fw_lock);
struct firmware_priv {
struct completion completion;
struct bin_attribute attr_data;
struct firmware *fw;
unsigned long status;
struct page **pages;
int nr_pages;
int page_array_size;
struct timer_list timeout;
struct device dev;
bool nowait;
char fw_id[];
};
static void
fw_load_abort(struct firmware_priv *fw_priv)
static struct firmware_priv *to_firmware_priv(struct device *dev)
{
return container_of(dev, struct firmware_priv, dev);
}
static void fw_load_abort(struct firmware_priv *fw_priv)
{
set_bit(FW_STATUS_ABORT, &fw_priv->status);
wmb();
complete(&fw_priv->completion);
}
static ssize_t
firmware_timeout_show(struct class *class,
struct class_attribute *attr,
char *buf)
static ssize_t firmware_timeout_show(struct class *class,
struct class_attribute *attr,
char *buf)
{
return sprintf(buf, "%d\n", loading_timeout);
}
@ -127,14 +130,14 @@ firmware_timeout_show(struct class *class,
*
* Note: zero means 'wait forever'.
**/
static ssize_t
firmware_timeout_store(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
static ssize_t firmware_timeout_store(struct class *class,
struct class_attribute *attr,
const char *buf, size_t count)
{
loading_timeout = simple_strtol(buf, NULL, 10);
if (loading_timeout < 0)
loading_timeout = 0;
return count;
}
@ -146,21 +149,20 @@ static struct class_attribute firmware_class_attrs[] = {
static void fw_dev_release(struct device *dev)
{
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
int i;
for (i = 0; i < fw_priv->nr_pages; i++)
__free_page(fw_priv->pages[i]);
kfree(fw_priv->pages);
kfree(fw_priv);
kfree(dev);
module_put(THIS_MODULE);
}
static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id))
return -ENOMEM;
@ -182,8 +184,9 @@ static struct class firmware_class = {
static ssize_t firmware_loading_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status);
return sprintf(buf, "%d\n", loading);
}
@ -219,7 +222,7 @@ static ssize_t firmware_loading_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
int loading = simple_strtol(buf, NULL, 10);
int i;
@ -277,13 +280,12 @@ static ssize_t firmware_loading_store(struct device *dev,
static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
static ssize_t
firmware_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buffer, loff_t offset,
size_t count)
static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buffer, loff_t offset, size_t count)
{
struct device *dev = to_dev(kobj);
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
struct firmware *fw;
ssize_t ret_count;
@ -322,8 +324,7 @@ out:
return ret_count;
}
static int
fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
{
int pages_needed = ALIGN(min_size, PAGE_SIZE) >> PAGE_SHIFT;
@ -373,13 +374,12 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
* Data written to the 'data' attribute will be later handed to
* the driver as a firmware image.
**/
static ssize_t
firmware_data_write(struct file* filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buffer,
loff_t offset, size_t count)
static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buffer, loff_t offset, size_t count)
{
struct device *dev = to_dev(kobj);
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
struct firmware *fw;
ssize_t retval;
@ -420,116 +420,103 @@ out:
return retval;
}
static struct bin_attribute firmware_attr_data_tmpl = {
.attr = {.name = "data", .mode = 0644},
static struct bin_attribute firmware_attr_data = {
.attr = { .name = "data", .mode = 0644 },
.size = 0,
.read = firmware_data_read,
.write = firmware_data_write,
};
static void
firmware_class_timeout(u_long data)
static void firmware_class_timeout(u_long data)
{
struct firmware_priv *fw_priv = (struct firmware_priv *) data;
fw_load_abort(fw_priv);
}
static int fw_register_device(struct device **dev_p, const char *fw_name,
struct device *device)
static struct firmware_priv *
fw_create_instance(struct firmware *firmware, const char *fw_name,
struct device *device, bool uevent, bool nowait)
{
int retval;
struct firmware_priv *fw_priv =
kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL);
struct firmware_priv *fw_priv;
struct device *f_dev;
int error;
*dev_p = NULL;
if (!fw_priv || !f_dev) {
fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
if (!fw_priv) {
dev_err(device, "%s: kmalloc failed\n", __func__);
retval = -ENOMEM;
goto error_kfree;
error = -ENOMEM;
goto err_out;
}
fw_priv->fw = firmware;
fw_priv->nowait = nowait;
strcpy(fw_priv->fw_id, fw_name);
init_completion(&fw_priv->completion);
fw_priv->attr_data = firmware_attr_data_tmpl;
fw_priv->timeout.function = firmware_class_timeout;
fw_priv->timeout.data = (u_long) fw_priv;
init_timer(&fw_priv->timeout);
setup_timer(&fw_priv->timeout,
firmware_class_timeout, (u_long) fw_priv);
f_dev = &fw_priv->dev;
device_initialize(f_dev);
dev_set_name(f_dev, "%s", dev_name(device));
f_dev->parent = device;
f_dev->class = &firmware_class;
dev_set_drvdata(f_dev, fw_priv);
dev_set_uevent_suppress(f_dev, 1);
retval = device_register(f_dev);
if (retval) {
dev_err(device, "%s: device_register failed\n", __func__);
put_device(f_dev);
return retval;
}
*dev_p = f_dev;
return 0;
error_kfree:
kfree(f_dev);
kfree(fw_priv);
return retval;
}
static int fw_setup_device(struct firmware *fw, struct device **dev_p,
const char *fw_name, struct device *device,
int uevent, bool nowait)
{
struct device *f_dev;
struct firmware_priv *fw_priv;
int retval;
*dev_p = NULL;
retval = fw_register_device(&f_dev, fw_name, device);
if (retval)
goto out;
dev_set_uevent_suppress(f_dev, true);
/* Need to pin this module until class device is destroyed */
__module_get(THIS_MODULE);
fw_priv = dev_get_drvdata(f_dev);
fw_priv->nowait = nowait;
fw_priv->fw = fw;
sysfs_bin_attr_init(&fw_priv->attr_data);
retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
if (retval) {
dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
goto error_unreg;
error = device_add(f_dev);
if (error) {
dev_err(device, "%s: device_register failed\n", __func__);
goto err_put_dev;
}
retval = device_create_file(f_dev, &dev_attr_loading);
if (retval) {
error = device_create_bin_file(f_dev, &firmware_attr_data);
if (error) {
dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
goto err_del_dev;
}
error = device_create_file(f_dev, &dev_attr_loading);
if (error) {
dev_err(device, "%s: device_create_file failed\n", __func__);
goto error_unreg;
goto err_del_bin_attr;
}
if (uevent)
dev_set_uevent_suppress(f_dev, 0);
*dev_p = f_dev;
goto out;
dev_set_uevent_suppress(f_dev, false);
error_unreg:
device_unregister(f_dev);
out:
return retval;
return fw_priv;
err_del_bin_attr:
device_remove_bin_file(f_dev, &firmware_attr_data);
err_del_dev:
device_del(f_dev);
err_put_dev:
put_device(f_dev);
err_out:
return ERR_PTR(error);
}
static int
_request_firmware(const struct firmware **firmware_p, const char *name,
struct device *device, int uevent, bool nowait)
static void fw_destroy_instance(struct firmware_priv *fw_priv)
{
struct device *f_dev = &fw_priv->dev;
device_remove_file(f_dev, &dev_attr_loading);
device_remove_bin_file(f_dev, &firmware_attr_data);
device_unregister(f_dev);
}
static int _request_firmware(const struct firmware **firmware_p,
const char *name, struct device *device,
bool uevent, bool nowait)
{
struct device *f_dev;
struct firmware_priv *fw_priv;
struct firmware *firmware;
int retval;
int retval = 0;
if (!firmware_p)
return -EINVAL;
@ -550,41 +537,40 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
if (uevent)
dev_dbg(device, "firmware: requesting %s\n", name);
retval = fw_setup_device(firmware, &f_dev, name, device,
uevent, nowait);
if (retval)
goto error_kfree_fw;
fw_priv = dev_get_drvdata(f_dev);
fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
if (IS_ERR(fw_priv)) {
retval = PTR_ERR(fw_priv);
goto out;
}
if (uevent) {
if (loading_timeout > 0) {
fw_priv->timeout.expires = jiffies + loading_timeout * HZ;
add_timer(&fw_priv->timeout);
}
if (loading_timeout > 0)
mod_timer(&fw_priv->timeout,
round_jiffies_up(jiffies +
loading_timeout * HZ));
kobject_uevent(&f_dev->kobj, KOBJ_ADD);
wait_for_completion(&fw_priv->completion);
set_bit(FW_STATUS_DONE, &fw_priv->status);
del_timer_sync(&fw_priv->timeout);
} else
wait_for_completion(&fw_priv->completion);
kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
}
wait_for_completion(&fw_priv->completion);
set_bit(FW_STATUS_DONE, &fw_priv->status);
del_timer_sync(&fw_priv->timeout);
mutex_lock(&fw_lock);
if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status)) {
if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status))
retval = -ENOENT;
release_firmware(fw_priv->fw);
*firmware_p = NULL;
}
fw_priv->fw = NULL;
mutex_unlock(&fw_lock);
device_unregister(f_dev);
goto out;
error_kfree_fw:
kfree(firmware);
*firmware_p = NULL;
fw_destroy_instance(fw_priv);
out:
if (retval) {
release_firmware(firmware);
firmware_p = NULL;
}
return retval;
}
@ -635,23 +621,24 @@ struct firmware_work {
int uevent;
};
static int
request_firmware_work_func(void *arg)
static int request_firmware_work_func(void *arg)
{
struct firmware_work *fw_work = arg;
const struct firmware *fw;
int ret;
if (!arg) {
WARN_ON(1);
return 0;
}
ret = _request_firmware(&fw, fw_work->name, fw_work->device,
fw_work->uevent, true);
ret = _request_firmware(&fw, fw_work->name, fw_work->device,
fw_work->uevent, true);
fw_work->cont(fw, fw_work->context);
module_put(fw_work->module);
kfree(fw_work);
return ret;
}
@ -679,34 +666,33 @@ request_firmware_nowait(
void (*cont)(const struct firmware *fw, void *context))
{
struct task_struct *task;
struct firmware_work *fw_work = kmalloc(sizeof (struct firmware_work),
gfp);
struct firmware_work *fw_work;
fw_work = kzalloc(sizeof (struct firmware_work), gfp);
if (!fw_work)
return -ENOMEM;
fw_work->module = module;
fw_work->name = name;
fw_work->device = device;
fw_work->context = context;
fw_work->cont = cont;
fw_work->uevent = uevent;
if (!try_module_get(module)) {
kfree(fw_work);
return -EFAULT;
}
*fw_work = (struct firmware_work) {
.module = module,
.name = name,
.device = device,
.context = context,
.cont = cont,
.uevent = uevent,
};
task = kthread_run(request_firmware_work_func, fw_work,
"firmware/%s", name);
if (IS_ERR(task)) {
fw_work->cont(NULL, fw_work->context);
module_put(fw_work->module);
kfree(fw_work);
return PTR_ERR(task);
}
return 0;
}

110
drivers/base/platform.c
View File

@ -192,13 +192,13 @@ int platform_device_add_resources(struct platform_device *pdev,
{
struct resource *r;
r = kmalloc(sizeof(struct resource) * num, GFP_KERNEL);
r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
if (r) {
memcpy(r, res, sizeof(struct resource) * num);
pdev->resource = r;
pdev->num_resources = num;
return 0;
}
return r ? 0 : -ENOMEM;
return -ENOMEM;
}
EXPORT_SYMBOL_GPL(platform_device_add_resources);
@ -345,108 +345,56 @@ void platform_device_unregister(struct platform_device *pdev)
EXPORT_SYMBOL_GPL(platform_device_unregister);
/**
* platform_device_register_simple - add a platform-level device and its resources
* platform_device_register_resndata - add a platform-level device with
* resources and platform-specific data
*
* @parent: parent device for the device we're adding
* @name: base name of the device we're adding
* @id: instance id
* @res: set of resources that needs to be allocated for the device
* @num: number of resources
*
* This function creates a simple platform device that requires minimal
* resource and memory management. Canned release function freeing memory
* allocated for the device allows drivers using such devices to be
* unloaded without waiting for the last reference to the device to be
* dropped.
*
* This interface is primarily intended for use with legacy drivers which
* probe hardware directly. Because such drivers create sysfs device nodes
* themselves, rather than letting system infrastructure handle such device
* enumeration tasks, they don't fully conform to the Linux driver model.
* In particular, when such drivers are built as modules, they can't be
* "hotplugged".
*
* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
*/
struct platform_device *platform_device_register_simple(const char *name,
int id,
const struct resource *res,
unsigned int num)
{
struct platform_device *pdev;
int retval;
pdev = platform_device_alloc(name, id);
if (!pdev) {
retval = -ENOMEM;
goto error;
}
if (num) {
retval = platform_device_add_resources(pdev, res, num);
if (retval)
goto error;
}
retval = platform_device_add(pdev);
if (retval)
goto error;
return pdev;
error:
platform_device_put(pdev);
return ERR_PTR(retval);
}
EXPORT_SYMBOL_GPL(platform_device_register_simple);
/**
* platform_device_register_data - add a platform-level device with platform-specific data
* @parent: parent device for the device we're adding
* @name: base name of the device we're adding
* @id: instance id
* @data: platform specific data for this platform device
* @size: size of platform specific data
*
* This function creates a simple platform device that requires minimal
* resource and memory management. Canned release function freeing memory
* allocated for the device allows drivers using such devices to be
* unloaded without waiting for the last reference to the device to be
* dropped.
*
* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
*/
struct platform_device *platform_device_register_data(
struct platform_device *__init_or_module platform_device_register_resndata(
struct device *parent,
const char *name, int id,
const struct resource *res, unsigned int num,
const void *data, size_t size)
{
int ret = -ENOMEM;
struct platform_device *pdev;
int retval;
pdev = platform_device_alloc(name, id);
if (!pdev) {
retval = -ENOMEM;
goto error;
}
if (!pdev)
goto err;
pdev->dev.parent = parent;
if (size) {
retval = platform_device_add_data(pdev, data, size);
if (retval)
goto error;
if (res) {
ret = platform_device_add_resources(pdev, res, num);
if (ret)
goto err;
}
retval = platform_device_add(pdev);
if (retval)
goto error;
if (data) {
ret = platform_device_add_data(pdev, data, size);
if (ret)
goto err;
}
ret = platform_device_add(pdev);
if (ret) {
err:
platform_device_put(pdev);
return ERR_PTR(ret);
}
return pdev;
error:
platform_device_put(pdev);
return ERR_PTR(retval);
}
EXPORT_SYMBOL_GPL(platform_device_register_data);
EXPORT_SYMBOL_GPL(platform_device_register_resndata);
static int platform_drv_probe(struct device *_dev)
{

5
drivers/firmware/dcdbas.c
View File

@ -634,9 +634,6 @@ static void __exit dcdbas_exit(void)
* before platform_device_unregister
*/
unregister_reboot_notifier(&dcdbas_reboot_nb);
smi_data_buf_free();
platform_device_unregister(dcdbas_pdev);
platform_driver_unregister(&dcdbas_driver);
/*
* We have to free the buffer here instead of dcdbas_remove
@ -645,6 +642,8 @@ static void __exit dcdbas_exit(void)
* released.
*/
smi_data_buf_free();
platform_device_unregister(dcdbas_pdev);
platform_driver_unregister(&dcdbas_driver);
}
module_init(dcdbas_init);

4
drivers/firmware/dmi-id.c
View File

@ -229,10 +229,12 @@ static int __init dmi_id_init(void)
ret = device_register(dmi_dev);
if (ret)
goto fail_class_unregister;
goto fail_free_dmi_dev;
return 0;
fail_free_dmi_dev:
kfree(dmi_dev);
fail_class_unregister:
class_unregister(&dmi_class);

4
drivers/leds/leds-bd2802.c
View File

@ -351,7 +351,7 @@ static ssize_t bd2802_store_reg##reg_addr(struct device *dev, \
return count; \
} \
static struct device_attribute bd2802_reg##reg_addr##_attr = { \
.attr = {.name = reg_name, .mode = 0644, .owner = THIS_MODULE}, \
.attr = {.name = reg_name, .mode = 0644}, \
.store = bd2802_store_reg##reg_addr, \
};
@ -482,7 +482,6 @@ static struct device_attribute bd2802_adv_conf_attr = {
.attr = {
.name = "advanced_configuration",
.mode = 0644,
.owner = THIS_MODULE
},
.show = bd2802_show_adv_conf,
.store = bd2802_store_adv_conf,
@ -519,7 +518,6 @@ static struct device_attribute bd2802_##attr_name##_attr = { \
.attr = { \
.name = name_str, \
.mode = 0644, \
.owner = THIS_MODULE \
}, \
.show = bd2802_show_##attr_name, \
.store = bd2802_store_##attr_name, \

1
drivers/regulator/core.c
View File

@ -1025,7 +1025,6 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
if (regulator->dev_attr.attr.name == NULL)
goto attr_name_err;
regulator->dev_attr.attr.owner = THIS_MODULE;
regulator->dev_attr.attr.mode = 0444;
regulator->dev_attr.show = device_requested_uA_show;
err = device_create_file(dev, &regulator->dev_attr);

3
drivers/scsi/arcmsr/arcmsr_attr.c
View File

@ -192,7 +192,6 @@ static struct bin_attribute arcmsr_sysfs_message_read_attr = {
.attr = {
.name = "mu_read",
.mode = S_IRUSR ,
.owner = THIS_MODULE,
},
.size = 1032,
.read = arcmsr_sysfs_iop_message_read,
@ -202,7 +201,6 @@ static struct bin_attribute arcmsr_sysfs_message_write_attr = {
.attr = {
.name = "mu_write",
.mode = S_IWUSR,
.owner = THIS_MODULE,
},
.size = 1032,
.write = arcmsr_sysfs_iop_message_write,
@ -212,7 +210,6 @@ static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
.attr = {
.name = "mu_clear",
.mode = S_IWUSR,
.owner = THIS_MODULE,
},
.size = 1,
.write = arcmsr_sysfs_iop_message_clear,

1
drivers/scsi/lpfc/lpfc_attr.c
View File

@ -2778,7 +2778,6 @@ static struct bin_attribute sysfs_drvr_stat_data_attr = {
.attr = {
.name = "lpfc_drvr_stat_data",
.mode = S_IRUSR,
.owner = THIS_MODULE,
},
.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
.read = sysfs_drvr_stat_data_read,

2
drivers/uio/uio_cif.c
View File

@ -79,7 +79,7 @@ static int __devinit hilscher_pci_probe(struct pci_dev *dev,
}
info->version = "0.0.1";
info->irq = dev->irq;
info->irq_flags = IRQF_DISABLED | IRQF_SHARED;
info->irq_flags = IRQF_SHARED;
info->handler = hilscher_handler;
if (uio_register_device(&dev->dev, info))

1
drivers/uio/uio_pdrv_genirq.c
View File

@ -155,7 +155,6 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
* Interrupt sharing is not supported.
*/
uioinfo->irq_flags |= IRQF_DISABLED;
uioinfo->handler = uio_pdrv_genirq_handler;
uioinfo->irqcontrol = uio_pdrv_genirq_irqcontrol;
uioinfo->open = uio_pdrv_genirq_open;

2
drivers/uio/uio_sercos3.c
View File

@ -154,7 +154,7 @@ static int __devinit sercos3_pci_probe(struct pci_dev *dev,
info->name = "Sercos_III_PCI";
info->version = "0.0.1";
info->irq = dev->irq;
info->irq_flags = IRQF_DISABLED | IRQF_SHARED;
info->irq_flags = IRQF_SHARED;
info->handler = sercos3_handler;
info->irqcontrol = sercos3_irqcontrol;

3
fs/sysfs/file.c
View File

@ -593,7 +593,8 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
* @mode: file permissions.
*
*/
int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr,
mode_t mode)
{
struct sysfs_dirent *sd;
struct iattr newattrs;

15
include/linux/device.h
View File

@ -84,9 +84,8 @@ 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,
int (*fn)(struct device_driver *, void *));
int bus_for_each_drv(struct bus_type *bus, struct device_driver *start,
void *data, int (*fn)(struct device_driver *, void *));
void bus_sort_breadthfirst(struct bus_type *bus,
int (*compare)(const struct device *a,
@ -110,10 +109,12 @@ extern int bus_unregister_notifier(struct bus_type *bus,
*/
#define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */
#define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device removed */
#define BUS_NOTIFY_BOUND_DRIVER 0x00000003 /* driver bound to device */
#define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be
#define BUS_NOTIFY_BIND_DRIVER 0x00000003 /* driver about to be
bound */
#define BUS_NOTIFY_BOUND_DRIVER 0x00000004 /* driver bound to device */
#define BUS_NOTIFY_UNBIND_DRIVER 0x00000005 /* driver about to be
unbound */
#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000005 /* driver is unbound
#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000006 /* driver is unbound
from the device */
extern struct kset *bus_get_kset(struct bus_type *bus);
@ -551,7 +552,7 @@ extern int device_for_each_child(struct device *dev, void *data,
int (*fn)(struct device *dev, void *data));
extern struct device *device_find_child(struct device *dev, void *data,
int (*match)(struct device *dev, void *data));
extern int device_rename(struct device *dev, char *new_name);
extern int device_rename(struct device *dev, const char *new_name);
extern int device_move(struct device *dev, struct device *new_parent,
enum dpm_order dpm_order);
extern const char *device_get_devnode(struct device *dev,

62
include/linux/platform_device.h
View File

@ -43,10 +43,64 @@ extern struct resource *platform_get_resource_byname(struct platform_device *, u
extern int platform_get_irq_byname(struct platform_device *, const char *);
extern int platform_add_devices(struct platform_device **, int);
extern struct platform_device *platform_device_register_simple(const char *, int id,
const struct resource *, unsigned int);
extern struct platform_device *platform_device_register_data(struct device *,
const char *, int, const void *, size_t);
extern struct platform_device *platform_device_register_resndata(
struct device *parent, const char *name, int id,
const struct resource *res, unsigned int num,
const void *data, size_t size);
/**
* platform_device_register_simple - add a platform-level device and its resources
* @name: base name of the device we're adding
* @id: instance id
* @res: set of resources that needs to be allocated for the device
* @num: number of resources
*
* This function creates a simple platform device that requires minimal
* resource and memory management. Canned release function freeing memory
* allocated for the device allows drivers using such devices to be
* unloaded without waiting for the last reference to the device to be
* dropped.
*
* This interface is primarily intended for use with legacy drivers which
* probe hardware directly. Because such drivers create sysfs device nodes
* themselves, rather than letting system infrastructure handle such device
* enumeration tasks, they don't fully conform to the Linux driver model.
* In particular, when such drivers are built as modules, they can't be
* "hotplugged".
*
* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
*/
static inline struct platform_device *platform_device_register_simple(
const char *name, int id,
const struct resource *res, unsigned int num)
{
return platform_device_register_resndata(NULL, name, id,
res, num, NULL, 0);
}
/**
* platform_device_register_data - add a platform-level device with platform-specific data
* @parent: parent device for the device we're adding
* @name: base name of the device we're adding
* @id: instance id
* @data: platform specific data for this platform device
* @size: size of platform specific data
*
* This function creates a simple platform device that requires minimal
* resource and memory management. Canned release function freeing memory
* allocated for the device allows drivers using such devices to be
* unloaded without waiting for the last reference to the device to be
* dropped.
*
* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
*/
static inline struct platform_device *platform_device_register_data(
struct device *parent, const char *name, int id,
const void *data, size_t size)
{
return platform_device_register_resndata(parent, name, id,
NULL, 0, data, size);
}
extern struct platform_device *platform_device_alloc(const char *name, int id);
extern int platform_device_add_resources(struct platform_device *pdev,

12
include/linux/sysfs.h
View File

@ -22,14 +22,8 @@ struct kobject;
struct module;
enum kobj_ns_type;
/* FIXME
* The *owner field is no longer used.
* x86 tree has been cleaned up. The owner
* attribute is still left for other arches.
*/
struct attribute {
const char *name;
struct module *owner;
mode_t mode;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lock_class_key *key;
@ -136,8 +130,8 @@ int __must_check sysfs_create_file(struct kobject *kobj,
const struct attribute *attr);
int __must_check sysfs_create_files(struct kobject *kobj,
const struct attribute **attr);
int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr,
mode_t mode);
int __must_check sysfs_chmod_file(struct kobject *kobj,
const struct attribute *attr, mode_t mode);
void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr);
void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr);
@ -225,7 +219,7 @@ static inline int sysfs_create_files(struct kobject *kobj,
}
static inline int sysfs_chmod_file(struct kobject *kobj,
struct attribute *attr, mode_t mode)
const struct attribute *attr, mode_t mode)
{
return 0;
}

15
kernel/cgroup.c
View File

@ -1623,6 +1623,8 @@ static struct file_system_type cgroup_fs_type = {
.kill_sb = cgroup_kill_sb,
};
static struct kobject *cgroup_kobj;
static inline struct cgroup *__d_cgrp(struct dentry *dentry)
{
return dentry->d_fsdata;
@ -3894,9 +3896,18 @@ int __init cgroup_init(void)
hhead = css_set_hash(init_css_set.subsys);
hlist_add_head(&init_css_set.hlist, hhead);
BUG_ON(!init_root_id(&rootnode));
err = register_filesystem(&cgroup_fs_type);
if (err < 0)
cgroup_kobj = kobject_create_and_add("cgroup", fs_kobj);
if (!cgroup_kobj) {
err = -ENOMEM;
goto out;
}
err = register_filesystem(&cgroup_fs_type);
if (err < 0) {
kobject_put(cgroup_kobj);
goto out;
}
proc_create("cgroups", 0, NULL, &proc_cgroupstats_operations);

2
kernel/sysctl.c
View File

@ -566,7 +566,7 @@ static struct ctl_table kern_table[] = {
.extra2 = &one,
},
#endif
#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
#ifdef CONFIG_HOTPLUG
{
.procname = "hotplug",
.data = &uevent_helper,

1
lib/Kconfig.debug
View File

@ -76,7 +76,6 @@ config UNUSED_SYMBOLS
config DEBUG_FS
bool "Debug Filesystem"
depends on SYSFS
help
debugfs is a virtual file system that kernel developers use to put
debugging files into. Enable this option to be able to read and