Driver Core: usb: add nodename support for usb drivers.

This adds support for USB drivers to report their requested nodename to
userspace.  It also updates a number of USB drivers to provide the
needed subdirectory and device name to be used for them.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index e9b436d2d944..9e9421525fb9 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -850,8 +850,14 @@ static const struct file_operations hiddev_fops = {
 #endif
 };
 
+static char *hiddev_nodename(struct device *dev)
+{
+        return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
+}
+
 static struct usb_class_driver hiddev_class = {
         .name =         "hiddev%d",
+        .nodename =     hiddev_nodename,
         .fops =         &hiddev_fops,
         .minor_base =   HIDDEV_MINOR_BASE,
 };
@@ -955,7 +961,6 @@ static int hiddev_usbd_probe(struct usb_interface *intf,
         return -ENODEV;
 }
 
-
 static /* const */ struct usb_driver hiddev_driver = {
         .name =         "hiddev",
         .probe =        hiddev_usbd_probe,