greybus: interface: fix power_state documentation

[cascardo/linux.git] / drivers / staging / greybus / Documentation / sysfs-bus-greybus

diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
index 62d03af..e202eac 100644 (file)
--- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus
+++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
@@ -102,17 +102,18 @@ Date:             March 2016
 KernelVersion: 4.XX
 Contact:       Greg Kroah-Hartman <greg@kroah.com>
 Description:
-               This reflects the power state of a Greybus Interface. If the
-               value read from it is "on", then power is currently supplied to
-               the Interface. Otherwise this will read "off" and the power is
-               currently not supplied to the Interface.
+               This file reflects the power state of a Greybus interface. If
+               the value read from it is "on", then power is currently
+               supplied to the interface. Otherwise it will read "off" and
+               power is currently not supplied to the interface.
 
                If the value read is "off", then writing "on" (or '1', 'y',
-               'Y') to it will enable power to the Interface. If the value
-               read is "on", then writing "off" (or '0', 'n', 'N') to it will
-               disable power to the Interface.
+               'Y') to this file will enable power to the interface and an
+               attempt to boot and possibly enumerate it will be made. Note
+               that on errors, the interface will again be powered down.
 
-               Writing the currently read value to it has no effect.
+               If the value read is "on", then writing "off" (or '0', 'n',
+               'N') to this file will power down the interface.
 
 What:          /sys/bus/greybus/devices/N-M.I/product_id
 Date:          October 2015