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>

2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index a4ef77e..3c5fe5c 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -726,12 +726,18 @@ static const struct file_operations iowarrior_fops = {
 	.poll = iowarrior_poll,
 };
 
+static char *iowarrior_nodename(struct device *dev)
+{
+	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
+}
+
 /*
  * usb class driver info in order to get a minor number from the usb core,
  * and to have the device registered with devfs and the driver core
  */
 static struct usb_class_driver iowarrior_class = {
 	.name = "iowarrior%d",
+	.nodename = iowarrior_nodename,
 	.fops = &iowarrior_fops,
 	.minor_base = IOWARRIOR_MINOR_BASE,
 };
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index ab0f322..c1e2433 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -266,12 +266,18 @@ static const struct file_operations tower_fops = {
 	.llseek =	tower_llseek,
 };
 
+static char *legousbtower_nodename(struct device *dev)
+{
+	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
+}
+
 /*
  * usb class driver info in order to get a minor number from the usb core,
  * and to have the device registered with the driver core
  */
 static struct usb_class_driver tower_class = {
 	.name =		"legousbtower%d",
+	.nodename = 	legousbtower_nodename,
 	.fops =		&tower_fops,
 	.minor_base =	LEGO_USB_TOWER_MINOR_BASE,
 };