From 2d06a0c9b3756404e141cafcd62b29ce05238007 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 4 Feb 2015 15:36:14 +0100
Subject: [PATCH] ipmi: Use is_visible callback for conditional sysfs entries

Instead of manual calls of device_create_file() and
device_remove_file(), implement the condition in is_visible callback
for the attribute group and put these entries to the group, too.
This simplifies the code and avoids the possible races.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
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