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Commit 414264f9 authored by Kay Sievers's avatar Kay Sievers Committed by Greg Kroah-Hartman
Browse files

Driver core: add name to device_type 



If "name" of a device_type is specified, the uevent will
contain the device_type name in the DEVTYPE variable.
This helps userspace to distingiush between different types
of devices, belonging to the same subsystem.

Signed-off-by: default avatarKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 621a1672

drivers/base/core.c

+5 −0
Original line number Diff line number Diff line
@@ -157,6 +157,11 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp, 
			       "MINOR=%u", MINOR(dev->devt));

	}



	if (dev->type && dev->type->name)

		add_uevent_var(envp, num_envp, &i,

			       buffer, buffer_size, &length,

			       "DEVTYPE=%s", dev->type->name);



	if (dev->driver)

		add_uevent_var(envp, num_envp, &i,

			       buffer, buffer_size, &length,

include/linux/device.h

+10 −0
Original line number Diff line number Diff line
@@ -331,7 +331,17 @@ extern struct class_device *class_device_create(struct class *cls, 
					__attribute__((format(printf,5,6)));

extern void class_device_destroy(struct class *cls, dev_t devt);



/*

 * The type of device, "struct device" is embedded in. A class

 * or bus can contain devices of different types

 * like "partitions" and "disks", "mouse" and "event".

 * This identifies the device type and carries type-specific

 * information, equivalent to the kobj_type of a kobject.

 * If "name" is specified, the uevent will contain it in

 * the DEVTYPE variable.

 */

struct device_type {

	const char *name;

	struct attribute_group **groups;

	int (*uevent)(struct device *dev, char **envp, int num_envp,

		      char *buffer, int buffer_size);