alsa: determine buffer_time if not already known

This patch fixes a theoretical (but practically impossible) flaw: the variable "buffer_time" may be uninitialized when it is used. Initialize the variable with snd_pcm_hw_params_get_buffer_time().

alsa: determine buffer_time if not already known
ab656a52 · Max Kellermann · 554a34fb · ab656a52
Commit ab656a52 authored Mar 08, 2009 by Max Kellermann
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alsa_plugin.c src/output/alsa_plugin.c +5 -0

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--- a/src/output/alsa_plugin.c
+++ b/src/output/alsa_plugin.c
@@ -309,6 +309,11 @@ configure_hw:
 							     &buffer_time, NULL);
 		if (err < 0)
 			goto error;
+	} else {
+		err = snd_pcm_hw_params_get_buffer_time(hwparams, &buffer_time,
+							NULL);
+		if (err < 0)
+			buffer_time = 0;
 	}

 	if (period_time_ro == 0 && buffer_time >= 10000) {