From: Clemens Ladisch <clemens@ladisch.de>
Date: Tue, 13 May 2008 07:26:01 +0000 (+0200)
Subject: [ALSA] virtuoso: restrict period time to less than 10 s
X-Git-Tag: v2.6.27-rc1~1111^2~161
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=ca1f30ad6c3f002d1d9b9355a53b8bbf2fe70588;p=linux-2.6-omap-h63xx.git

[ALSA] virtuoso: restrict period time to less than 10 s

Add a constraint for the period time so that there are less than ten
seconds between interrupts so that ALSA does not assume that the device
is dead.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
index 09a16e459de..c4ad65a3406 100644
--- a/sound/pci/oxygen/oxygen_pcm.c
+++ b/sound/pci/oxygen/oxygen_pcm.c
@@ -165,6 +165,12 @@ static int oxygen_open(struct snd_pcm_substream *substream,
 		if (err < 0)
 			return err;
 	}
+	if (channel == PCM_MULTICH) {
+		err = snd_pcm_hw_constraint_minmax
+			(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 0, 8192000);
+		if (err < 0)
+			return err;
+	}
 	snd_pcm_set_sync(substream);
 	chip->streams[channel] = substream;