File 0006-alsa-ucm-use-ucm2-name-for-the-direct-card-index-ope.patch of Package pulseaudio

From c8f065250dde966825f171ff817f7301f423a42e Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sat, 23 Nov 2019 15:17:30 +0100
Subject: [PATCH] alsa-ucm: use ucm2 name for the direct card index open

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 src/modules/alsa/alsa-ucm.c | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/src/modules/alsa/alsa-ucm.c b/src/modules/alsa/alsa-ucm.c
index 0a40ca8fe654..aeb4e59e323c 100644
--- a/src/modules/alsa/alsa-ucm.c
+++ b/src/modules/alsa/alsa-ucm.c
@@ -576,17 +576,25 @@ int pa_alsa_ucm_query_profiles(pa_alsa_ucm_config *ucm, int card_index) {
     const char **verb_list;
     int num_verbs, i, err = 0;
 
-    /* is UCM available for this card ? */
-    err = snd_card_get_name(card_index, &card_name);
-    if (err < 0) {
-        pa_log("Card can't get card_name from card_index %d", card_index);
-        goto name_fail;
-    }
-
+    /* support multiple card instances, address card directly by index */
+    card_name = pa_sprintf_malloc("hw:%i", card_index);
+    if (card_name == NULL)
+        return -ENOMEM;
     err = snd_use_case_mgr_open(&ucm->ucm_mgr, card_name);
     if (err < 0) {
-        pa_log_info("UCM not available for card %s", card_name);
-        goto ucm_mgr_fail;
+        /* fallback longname: is UCM available for this card ? */
+        pa_xfree(card_name);
+        err = snd_card_get_name(card_index, &card_name);
+        if (err < 0) {
+            pa_log("Card can't get card_name from card_index %d", card_index);
+            goto name_fail;
+        }
+
+        err = snd_use_case_mgr_open(&ucm->ucm_mgr, card_name);
+        if (err < 0) {
+            pa_log_info("UCM not available for card %s", card_name);
+            goto ucm_mgr_fail;
+        }
     }
 
     pa_log_info("UCM available for card %s", card_name);
@@ -626,7 +634,7 @@ ucm_verb_fail:
     }
 
 ucm_mgr_fail:
-    free(card_name);
+    pa_xfree(card_name);
 
 name_fail:
     return err;
-- 
2.16.4