From 7d40a76ef5494e08af00fa4e7bfefbd43aba4827 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Tue, 31 Aug 2021 09:25:12 +0200 Subject: [PATCH] ucm: avoid zero card instance number Signed-off-by: Jaroslav Kysela --- src/ucm/utils.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/ucm/utils.c b/src/ucm/utils.c index f3a8c9ba..10b21c34 100644 --- a/src/ucm/utils.c +++ b/src/ucm/utils.c @@ -780,6 +780,9 @@ int uc_mgr_card_open(snd_use_case_mgr_t *uc_mgr) while (uc_mgr_card_find(ucm_card_assign)) { ucm_card_assign++; ucm_card_assign &= 0xffff; + /* avoid zero card instance number */ + if (ucm_card_assign == 0) + ucm_card_assign++; if (ucm_card_assign == prev) { pthread_mutex_unlock(&ucm_cards_mutex); return -ENOMEM; -- 2.47.3