From 9af23624ae2c7978313b46e58fdc4ca5d8b799f5 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 30 Nov 2009 11:15:02 -0800
Subject: [PATCH] USB: add devpath sysfs attribute
This is not exported from the usb core, yet we rely on it to create
paths to interfaces for this device in sysfs. Export it to make
userspace tools have an easier time to figure things out.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/core/sysfs.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 470e2413a9cfc..ae763974be259 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -138,6 +138,16 @@ show_devnum(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
+static ssize_t
+show_devpath(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct usb_device *udev;
+
+ udev = to_usb_device(dev);
+ return sprintf(buf, "%s\n", udev->devpath);
+}
+static DEVICE_ATTR(devpath, S_IRUGO, show_devpath, NULL);
+
static ssize_t
show_version(struct device *dev, struct device_attribute *attr, char *buf)
{
@@ -538,8 +548,8 @@ static struct attribute *dev_attrs[] = {
&dev_attr_bConfigurationValue.attr,
&dev_attr_bmAttributes.attr,
&dev_attr_bMaxPower.attr,
- &dev_attr_urbnum.attr,
/* device attributes */
+ &dev_attr_urbnum.attr,
&dev_attr_idVendor.attr,
&dev_attr_idProduct.attr,
&dev_attr_bcdDevice.attr,
@@ -551,6 +561,7 @@ static struct attribute *dev_attrs[] = {
&dev_attr_speed.attr,
&dev_attr_busnum.attr,
&dev_attr_devnum.attr,
+ &dev_attr_devpath.attr,
&dev_attr_version.attr,
&dev_attr_maxchild.attr,
&dev_attr_quirks.attr,
--
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