Commit:     414264f959cf46f49f974b3510400e12ac3624a6
Parent:     621a1672f7377e08a942f205d6742d8af1292aab
Author:     Kay Sievers <[EMAIL PROTECTED]>
AuthorDate: Mon Mar 12 21:08:57 2007 +0100
Committer:  Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Fri Apr 27 10:57:28 2007 -0700

    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 <[EMAIL PROTECTED]>
    Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
 drivers/base/core.c    |    5 +++++
 include/linux/device.h |   10 ++++++++++
 2 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index bb2cc37..bffb69e 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 3b64fde..7f63d4d 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,
 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);
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