Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
Documentation/ABI/testing/sysfs-bus-usb | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-usb
b/Documentation/ABI/testing/sysfs-bus-usb
index bbccdbf..0778140 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -236,3 +236,32 @@ Description:
This attribute is to expose these information to user space.
The file will read "hotplug", "wired" and "not used" if the
information is available, and "unknown" otherwise.
+
+What: /sys/bus/usb/devices/.../devnum
+KernelVersion: since atleast 2.6.18
+Description:
+ Device address on the USB bus.
+
+What: /sys/bus/usb/devices/.../bConfigurationValue
+KernelVersion: since atleast 2.6.18
+Description:
+ bConfigurationValue of the *active* configuration for the
+ device.
+
+What: /sys/bus/usb/devices/.../busnum
+KernelVersion: 2.6.22
+Description:
+ Bus-number of the USB-bus the device is connected to.
+
+What: /sys/bus/usb/devices/.../descriptors
+KernelVersion: 2.6.26
+Description:
+ Binary file containing cached descriptors of the device. The
+ binary data consists of first the device descriptor, and then
+ the descriptors for each configuration of the device.
+ Note that the wTotalLength of the config descriptors can not
+ be trusted, as the device may have a smaller config descriptor
+ then it advertises. The bLength field of each (sub) descriptor
+ can be trusted, and can be used to seek forward one (sub)
+ descriptor at a time until the next config descriptor is found.
+ All descriptors read from this file are in bus-endian format
--
1.8.2.1
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