From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Tue, 8 May 2012 09:33:47 +0000 (+0100)
Subject: ASoC: pcm: Fix DPCM for aux_devs
X-Git-Tag: v3.5-rc1~13^2~9^2~42
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b3bba9a1a8dfcd338eb7d099dcd53daacb698f8b;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

ASoC: pcm: Fix DPCM for aux_devs

When we instantiate an aux_dev we use a fake rtd as part of the process
which doesn't have a dai_link associated with it. Fix the dpcm startup
code to cope with this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
---

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index c0b394f..4f824cb 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2332,6 +2332,9 @@ static const struct file_operations dpcm_state_fops = {
 
 int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
 {
+	if (!rtd->dai_link)
+		return 0;
+
 	rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
 			rtd->card->debugfs_card_root);
 	if (!rtd->debugfs_dpcm_root) {