File 0033-PCM-Fix-memory-leak-for-pcm-empty-and-asym-plugins.patch of Package alsa

From edcd677bf2065c560ef578940bab8f0aacddf0e6 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 30 Oct 2012 11:43:07 +0100
Subject: [PATCH 33/35] PCM: Fix memory leak for pcm empty and asym plugins

The init-only plugins do not have own pcm handle, so free the references
to open function immediately after open.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 src/pcm/pcm.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index 5880057..359d295 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -2171,7 +2171,12 @@ static int snd_pcm_open_conf(snd_pcm_t **pcmp, const char *name,
 	if (open_func) {
 		err = open_func(pcmp, name, pcm_root, pcm_conf, stream, mode);
 		if (err >= 0) {
-			(*pcmp)->open_func = open_func;
+			if ((*pcmp)->open_func) {
+				/* only init plugin (like empty, asym) */
+				snd_dlobj_cache_put(open_func);
+			} else {
+				(*pcmp)->open_func = open_func;
+			}
 			err = 0;
 		} else {
 			snd_dlobj_cache_put(open_func);
-- 
1.8.0