modargs: Don't fail needlessly in pa_modargs_get_sample_spec_and_channel_map().

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=49664

1 files changed, 6 insertions, 2 deletions

diff --git a/src/pulsecore/modargs.c b/src/pulsecore/modargs.c
index e86ffa551..0abc2436b 100644
--- a/src/pulsecore/modargs.c
+++ b/src/pulsecore/modargs.c
@@ -453,8 +453,12 @@ int pa_modargs_get_sample_spec_and_channel_map(
     if (pa_modargs_get_channel_map(ma, NULL, &map) < 0)
         return -1;
 
-    if (map.channels != ss.channels)
-        return -1;
+    if (map.channels != ss.channels) {
+        if (!pa_modargs_get_value(ma, "channels", NULL))
+            ss.channels = map.channels;
+        else
+            return -1;
+    }
 
     *rmap = map;
     *rss = ss;