From 4f8ada444cc7a7ea70cdc81f098b34c5f1f2df41 Mon Sep 17 00:00:00 2001
From: Giuliano Pochini <pochini@shiny.it>
Date: Sun, 14 Feb 2010 18:15:51 +0100
Subject: [PATCH] ALSA: Echoaudio - Add firmware cache #2

This patch implements a simple cache for the firmware files when CONFIG_PM is defined.

This patch changes get_firmware(), free_firmware() and adds
free_firmware_cache(). The first two functions implement a very
simple cache and the latter is used to actually release all the stored
firmwares when the module is unloaded.
When CONFIG_PM is not enabled those functions act as before, that is
free_firmware() releases the firmware immediately and
free_firmware_cache() does nothing.

Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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