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-rw-r--r--Documentation/ABI/testing/sysfs-bus-usb13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index 7772928ee48..deb6b489e4e 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -144,3 +144,16 @@ Description:
Write a 1 to force the device to disconnect
(equivalent to unplugging a wired USB device).
+
+What: /sys/bus/usb/drivers/.../remove_id
+Date: November 2009
+Contact: CHENG Renquan <rqcheng@smu.edu.sg>
+Description:
+ Writing a device ID to this file will remove an ID
+ that was dynamically added via the new_id sysfs entry.
+ The format for the device ID is:
+ idVendor idProduct. After successfully
+ removing an ID, the driver will no longer support the
+ device. This is useful to ensure auto probing won't
+ match the driver to the device. For example:
+ # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id