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>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index bb2cc37a4d43..bffb69e4bde2 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,