pulseaudio/0039-ucm-fix-the-port-ucm-device-activation-on-boot.patch

From fc5f263e594cf5ecb7034fb54dadb286d2b4a810 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 31 Mar 2020 13:24:36 +0200
Subject: [PATCH] ucm: fix the port / ucm device activation on boot

The UCM device must be activated using the pa_alsa_ucm_set_port()
call on boot (the sink creation time). In case when the
mixer controls are not defined for the application in the
UCM configuration, the mixer_handle is NULL.

Call the pa_alsa_ucm_set_port() before the mixer_handle check.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 src/modules/alsa/alsa-sink.c   | 13 +++++++++----
 src/modules/alsa/alsa-source.c | 13 +++++++++----
 2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/src/modules/alsa/alsa-sink.c b/src/modules/alsa/alsa-sink.c
index 65430caed902..7048371e1832 100644
--- a/src/modules/alsa/alsa-sink.c
+++ b/src/modules/alsa/alsa-sink.c
@@ -2138,6 +2138,15 @@ static int setup_mixer(struct userdata *u, bool ignore_dB) {
 
     pa_assert(u);
 
+    /* This code is before the u->mixer_handle check, because if the UCM
+     * configuration doesn't specify volume or mute controls, u->mixer_handle
+     * will be NULL, but the UCM device enable sequence will still need to be
+     * executed. */
+    if (u->sink->active_port && u->ucm_context) {
+        if (pa_alsa_ucm_set_port(u->ucm_context, u->sink->active_port, true) < 0)
+            return -1;
+    }
+
     if (!u->mixer_handle)
         return 0;
 
@@ -2155,10 +2164,6 @@ static int setup_mixer(struct userdata *u, bool ignore_dB) {
         } else {
             pa_alsa_ucm_port_data *data;
 
-            /* First activate the port on the UCM side */
-            if (pa_alsa_ucm_set_port(u->ucm_context, u->sink->active_port, true) < 0)
-                return -1;
-
             data = PA_DEVICE_PORT_DATA(u->sink->active_port);
 
             /* Now activate volume controls, if any */
diff --git a/src/modules/alsa/alsa-source.c b/src/modules/alsa/alsa-source.c
index c33f81e35c18..bf9e093b336a 100644
--- a/src/modules/alsa/alsa-source.c
+++ b/src/modules/alsa/alsa-source.c
@@ -1844,6 +1844,15 @@ static int setup_mixer(struct userdata *u, bool ignore_dB) {
 
     pa_assert(u);
 
+    /* This code is before the u->mixer_handle check, because if the UCM
+     * configuration doesn't specify volume or mute controls, u->mixer_handle
+     * will be NULL, but the UCM device enable sequence will still need to be
+     * executed. */
+    if (u->source->active_port && u->ucm_context) {
+        if (pa_alsa_ucm_set_port(u->ucm_context, u->source->active_port, false) < 0)
+            return -1;
+    }
+
     if (!u->mixer_handle)
         return 0;
 
@@ -1861,10 +1870,6 @@ static int setup_mixer(struct userdata *u, bool ignore_dB) {
         } else {
             pa_alsa_ucm_port_data *data;
 
-            /* First activate the port on the UCM side */
-            if (pa_alsa_ucm_set_port(u->ucm_context, u->source->active_port, false) < 0)
-                return -1;
-
             data = PA_DEVICE_PORT_DATA(u->source->active_port);
 
             /* Now activate volume controls, if any */
-- 
2.16.4