From b6a473a7e1d4f81fc3e355c95982820bb8eae97d Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 5 Feb 2015 21:38:59 +0100
Subject: [PATCH] xen: balloon: Use static attribute groups for sysfs entries

Instead of manual calls of device_create_file(), device_remove_file()
and sysfs_create_group(), assign static attribute groups to the device
to register.  This simplifies the code and avoids possible races.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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