From 95096bd8781e86b456a076e1d90a865eeaca788e Mon Sep 17 00:00:00 2001
From: ratchov <ratchov@openbsd.org>
Date: Fri, 24 May 2024 15:01:53 +0000
Subject: [PATCH] sndiod: Hide "hardware" device's server.device control.

If sndiod is using another sndiod instance instead of the bare
hardware, then it must disable the underlying server.device
control to avoid conflicts with its own server.device control.
---
 usr.bin/sndiod/dev.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/usr.bin/sndiod/dev.c b/usr.bin/sndiod/dev.c
index a5fc85e74eb..eaa29fbf922 100644
--- a/usr.bin/sndiod/dev.c
+++ b/usr.bin/sndiod/dev.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dev.c,v 1.113 2024/05/06 05:37:26 ratchov Exp $	*/
+/*	$OpenBSD: dev.c,v 1.114 2024/05/24 15:01:53 ratchov Exp $	*/
 /*
  * Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
  *
@@ -2290,6 +2290,14 @@ ctlslot_visible(struct ctlslot *s, struct ctl *c)
 		return 1;
 	switch (c->scope) {
 	case CTL_HW:
+		/*
+		 * Disable hardware's server.device control as its
+		 * replaced by sndiod's one
+		 */
+		if (strcmp(c->node0.name, "server") == 0 &&
+		    strcmp(c->func, "device") == 0)
+			return 0;
+		/* FALLTHROUHG */
 	case CTL_DEV_MASTER:
 		return (s->opt->dev == c->u.any.arg0);
 	case CTL_OPT_DEV:
-- 
2.20.1