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Commit 2589f188 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Driver core: add ability for devices to create and remove bin files 



Makes it easier for devices to create and remove binary attribute files
so they don't have to call directly into sysfs.  This is needed to help
with the conversion from struct class_device to struct device.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c47ed219

drivers/base/core.c

+26 −0
Original line number Diff line number Diff line
@@ -319,6 +319,32 @@ void device_remove_file(struct device * dev, struct device_attribute * attr) 
	}

}



/**

 * device_create_bin_file - create sysfs binary attribute file for device.

 * @dev: device.

 * @attr: device binary attribute descriptor.

 */

int device_create_bin_file(struct device *dev, struct bin_attribute *attr)

{

	int error = -EINVAL;

	if (dev)

		error = sysfs_create_bin_file(&dev->kobj, attr);

	return error;

}

EXPORT_SYMBOL_GPL(device_create_bin_file);



/**

 * device_remove_bin_file - remove sysfs binary attribute file

 * @dev: device.

 * @attr: device binary attribute descriptor.

 */

void device_remove_bin_file(struct device *dev, struct bin_attribute *attr)

{

	if (dev)

		sysfs_remove_bin_file(&dev->kobj, attr);

}

EXPORT_SYMBOL_GPL(device_remove_bin_file);



static void klist_children_get(struct klist_node *n)

{

	struct device *dev = container_of(n, struct device, knode_parent);

include/linux/device.h

+4 −0
Original line number Diff line number Diff line
@@ -309,6 +309,10 @@ struct device_attribute dev_attr_##_name = __ATTR(_name,_mode,_show,_store) 


extern int device_create_file(struct device *device, struct device_attribute * entry);

extern void device_remove_file(struct device * dev, struct device_attribute * attr);

extern int __must_check device_create_bin_file(struct device *dev,

					       struct bin_attribute *attr);

extern void device_remove_bin_file(struct device *dev,

				   struct bin_attribute *attr);

struct device {

	struct klist		klist_children;

	struct klist_node	knode_parent;		/* node in sibling list */