From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 13 Apr 2009 20:45:31 +0000 (+0200)
Subject: alsa: when passing emptry mixer control name, force sw volume
X-Git-Tag: submit/2.0-panda/20130828.192557~1903
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=89f74cb85867a8eb1bb609006212453405583132;p=profile%2Fivi%2Fpulseaudio-panda.git

alsa: when passing emptry mixer control name, force sw volume
---

diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index fbf88b0..8da07b2 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;