From c7b364f7dd82e8610373b8c6d788db867d7e99db Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 5 Feb 2015 14:36:25 +0100
Subject: [PATCH] USB: gadget: f_mass_storage: use static attribute groups for
 sysfs entries

Instead of manual device_create_file() and device_remove_file() calls,
assign the static attribute groups to the lun device to register.
The RO or RW permissions for some entries are decided in is_visible
callback.  This simplifies the code (also the logic) and avoids the
possible races, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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