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authorKay Sievers <kay.sievers@vrfy.org>2009-04-30 15:23:42 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 21:30:25 -0700
commitf7a386c5b8ff34cd84ae922603d1c6f9d234edee (patch)
treeae1c03544dd511d85cc537c632eba6f035072e36 /drivers/usb/core
parentd405640539555b601e52f7d18f1f0b1345d18bf5 (diff)
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>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/file.c13
-rw-r--r--drivers/usb/core/usb.c11
2 files changed, 23 insertions, 1 deletions
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 997e659ff69..5cef88929b3 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -67,6 +67,16 @@ static struct usb_class {
struct class *class;
} *usb_class;
+static char *usb_nodename(struct device *dev)
+{
+ struct usb_class_driver *drv;
+
+ drv = dev_get_drvdata(dev);
+ if (!drv || !drv->nodename)
+ return NULL;
+ return drv->nodename(dev);
+}
+
static int init_usb_class(void)
{
int result = 0;
@@ -90,6 +100,7 @@ static int init_usb_class(void)
kfree(usb_class);
usb_class = NULL;
}
+ usb_class->class->nodename = usb_nodename;
exit:
return result;
@@ -198,7 +209,7 @@ int usb_register_dev(struct usb_interface *intf,
else
temp = name;
intf->usb_dev = device_create(usb_class->class, &intf->dev,
- MKDEV(USB_MAJOR, minor), NULL,
+ MKDEV(USB_MAJOR, minor), class_driver,
"%s", temp);
if (IS_ERR(intf->usb_dev)) {
down_write(&minor_rwsem);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 7eee400d3e3..927a27dd2f8 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -305,10 +305,21 @@ static struct dev_pm_ops usb_device_pm_ops = {
#endif /* CONFIG_PM */
+
+static char *usb_nodename(struct device *dev)
+{
+ struct usb_device *usb_dev;
+
+ usb_dev = to_usb_device(dev);
+ return kasprintf(GFP_KERNEL, "bus/usb/%03d/%03d",
+ usb_dev->bus->busnum, usb_dev->devnum);
+}
+
struct device_type usb_device_type = {
.name = "usb_device",
.release = usb_release_dev,
.uevent = usb_dev_uevent,
+ .nodename = usb_nodename,
.pm = &usb_device_pm_ops,
};