From a14dad95d45057133f5e44e6045be93712430760 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 27 Jul 2011 14:48:28 +0100
Subject: tinymix: Say if we can't open the mixer

Otherwise we just list a device with zero controls which isn't the most
obvious failure mode.
---
 tinymix.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tinymix.c b/tinymix.c
index 7f593b3..3fc2e41 100644
--- a/tinymix.c
+++ b/tinymix.c
@@ -41,6 +41,10 @@ int main(int argc, char **argv)
     struct mixer *mixer;
 
     mixer = mixer_open(0);
+    if (!mixer) {
+        fprintf(stderr, "Failed to open mixer\n");
+        return EXIT_FAILURE;
+    }
 
     if (argc == 1)
         tinymix_list_controls(mixer);
-- 
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