* 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
...
<!--
X!Edrivers/base/interface.c
-->
+!Iinclude/linux/platform_device.h
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
Patrick Mochel <mochel@osdl.org>
Mike Murphy <mamurph@cs.clemson.edu>
-Revised: 22 February 2009
+Revised: 15 July 2010
Original: 10 January 2003
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
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;
}
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.
- 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.
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);
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:
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
.attr = {
.name = "hs_reg",
.mode = S_IRUGO | S_IWUSR,
- .owner = THIS_MODULE,
},
.size = MV64X60_VAL_LEN_MAX,
.read = mv64x60_hs_reg_read,
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;
}
* 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;
{
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) {
struct dma_coherent_mem {
void *virt_base;
- u32 device_base;
+ dma_addr_t device_base;
int size;
int flags;
unsigned long *bitmap;
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);
}
*
* 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;
}
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;
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);
}
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;
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;
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;
* 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;
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);
-
- *dev_p = NULL;
+ struct firmware_priv *fw_priv;
+ struct device *f_dev;
+ int error;
- 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;
+ error = device_add(f_dev);
+ if (error) {
+ dev_err(device, "%s: device_register failed\n", __func__);
+ goto err_put_dev;
+ }
- 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) {
+ error = device_create_bin_file(f_dev, &firmware_attr_data);
+ if (error) {
dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
- goto error_unreg;
+ goto err_del_dev;
}
- retval = device_create_file(f_dev, &dev_attr_loading);
- if (retval) {
+ 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);
+
+ 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 void fw_destroy_instance(struct firmware_priv *fw_priv)
+{
+ struct device *f_dev = &fw_priv->dev;
-error_unreg:
+ device_remove_file(f_dev, &dev_attr_loading);
+ device_remove_bin_file(f_dev, &firmware_attr_data);
device_unregister(f_dev);
-out:
- return retval;
}
-static int
-_request_firmware(const struct firmware **firmware_p, const char *name,
- struct device *device, int uevent, bool nowait)
+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;
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(&fw_priv->dev.kobj, KOBJ_ADD);
+ }
+
+ wait_for_completion(&fw_priv->completion);
- 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);
+ 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;
}
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;
}
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;
}
{
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);
EXPORT_SYMBOL_GPL(platform_device_unregister);
/**
- * 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".
+ * platform_device_register_resndata - add a platform-level device with
+ * resources and platform-specific data
*
- * 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
+ * @res: set of resources that needs to be allocated for the device
+ * @num: number of resources
* @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;
+ }
- return pdev;
+ ret = platform_device_add(pdev);
+ if (ret) {
+err:
+ platform_device_put(pdev);
+ return ERR_PTR(ret);
+ }
-error:
- platform_device_put(pdev);
- return ERR_PTR(retval);
+ return pdev;
}
-EXPORT_SYMBOL_GPL(platform_device_register_data);
+EXPORT_SYMBOL_GPL(platform_device_register_resndata);
static int platform_drv_probe(struct device *_dev)
{
* 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
* released.
*/
smi_data_buf_free();
+ platform_device_unregister(dcdbas_pdev);
+ platform_driver_unregister(&dcdbas_driver);
}
module_init(dcdbas_init);
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);
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, \
};
.attr = {
.name = "advanced_configuration",
.mode = 0644,
- .owner = THIS_MODULE
},
.show = bd2802_show_adv_conf,
.store = bd2802_store_adv_conf,
.attr = { \
.name = name_str, \
.mode = 0644, \
- .owner = THIS_MODULE \
}, \
.show = bd2802_show_##attr_name, \
.store = bd2802_store_##attr_name, \
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, ®ulator->dev_attr);
.attr = {
.name = "mu_read",
.mode = S_IRUSR ,
- .owner = THIS_MODULE,
},
.size = 1032,
.read = arcmsr_sysfs_iop_message_read,
.attr = {
.name = "mu_write",
.mode = S_IWUSR,
- .owner = THIS_MODULE,
},
.size = 1032,
.write = arcmsr_sysfs_iop_message_write,
.attr = {
.name = "mu_clear",
.mode = S_IWUSR,
- .owner = THIS_MODULE,
},
.size = 1,
.write = arcmsr_sysfs_iop_message_clear,
.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,
}
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))
* 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;
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;
* @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;
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,
*/
#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);
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,
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,
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;
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);
}
static inline int sysfs_chmod_file(struct kobject *kobj,
- struct attribute *attr, mode_t mode)
+ const struct attribute *attr, mode_t mode)
{
return 0;
}
.kill_sb = cgroup_kill_sb,
};
+static struct kobject *cgroup_kobj;
+
static inline struct cgroup *__d_cgrp(struct dentry *dentry)
{
return dentry->d_fsdata;
hhead = css_set_hash(init_css_set.subsys);
hlist_add_head(&init_css_set.hlist, hhead);
BUG_ON(!init_root_id(&rootnode));
+
+ 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)
+ if (err < 0) {
+ kobject_put(cgroup_kobj);
goto out;
+ }
proc_create("cgroups", 0, NULL, &proc_cgroupstats_operations);
.extra2 = &one,
},
#endif
-#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+#ifdef CONFIG_HOTPLUG
{
.procname = "hotplug",
.data = &uevent_helper,
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
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff