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authorKay Sievers <kay.sievers@vrfy.org>2007-03-12 21:08:57 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-27 10:57:28 -0700
commit414264f959cf46f49f974b3510400e12ac3624a6 (patch)
treeead43994761620cbf7cb22525610627786562098
parent621a1672f7377e08a942f205d6742d8af1292aab (diff)
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: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/base/core.c5
-rw-r--r--include/linux/device.h10
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index bb2cc37a4d4..bffb69e4bde 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -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,
diff --git a/include/linux/device.h b/include/linux/device.h
index 3b64fdecd04..7f63d4de5c4 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -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);