greybus: interface: document sysfs files

Yes, an interface has a device id sysfs file, so we need to document it.

Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
index b734c67..2491201 100644 (file)
--- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus
+++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
@@ -53,3 +53,10 @@ KernelVersion:       3.XX
 Contact:       Greg Kroah-Hartman <greg@kroah.com>
 Description:
                The protocol id of a Greybus connection.
+
+What:          /sys/bus/greybus/device/.../device_id
+Date:          December 2014
+KernelVersion: 3.XX
+Contact:       Greg Kroah-Hartman <greg@kroah.com>
+Description:
+               The device id of a Greybus interface.