From 89f74cb85867a8eb1bb609006212453405583132 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 13 Apr 2009 22:45:31 +0200
Subject: alsa: when passing emptry mixer control name, force sw volume

---
 src/modules/alsa/alsa-util.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/modules/alsa/alsa-util.c')

diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index fbf88b08..8da07b24 100644
--- a/src/modules/alsa/alsa-util.c
+++ b/src/modules/alsa/alsa-util.c
@@ -1107,6 +1107,11 @@ int pa_alsa_find_mixer_and_elem(
     pa_assert(_m);
     pa_assert(_e);
 
+    if (control_name && *control_name == 0) {
+        pa_log_debug("Hardware mixer usage disabled because empty control name passed");
+        return -1;
+    }
+
     if ((err = snd_mixer_open(&m, 0)) < 0) {
         pa_log("Error opening mixer: %s", snd_strerror(err));
         return -1;
-- 
cgit