linux-kernel - [PATCH v2 2/4] ASoC: simple-card: dynamically allocate the DAI link array

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Date:	Tue, 11 Mar 2014 10:21:17 +0100
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Mark Brown <broonie@...nel.org>
Cc:	alsa-devel@...a-project.org,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	linux-kernel@...r.kernel.org, Xiubo Li <Li.Xiubo@...escale.com>
Subject: [PATCH v2 2/4] ASoC: simple-card: dynamically allocate the DAI link
 array

The DAI link array is hard-coded as a single CPU / CODEC link.

This patch allocates this array with the card definition and facilitates
handling more DAI links.

Signed-off-by: Jean-Francois Moine <moinejf@...e.fr>
---
 sound/soc/generic/simple-card.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index dcf37fb..2710b52 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -23,7 +23,7 @@ struct simple_card_data {
 	unsigned int daifmt;
 	struct asoc_simple_dai cpu_dai;
 	struct asoc_simple_dai codec_dai;
-	struct snd_soc_dai_link snd_link;
+	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
 };
 
 static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
@@ -276,7 +276,9 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	priv = devm_kzalloc(dev,
+			sizeof(*priv) + sizeof(*dai_link),
+			GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
@@ -285,7 +287,7 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
 	 */
 	priv->snd_card.owner = THIS_MODULE;
 	priv->snd_card.dev = dev;
-	dai_link = &priv->snd_link;
+	dai_link = priv->dai_link;
 	priv->snd_card.dai_link = dai_link;
 	priv->snd_card.num_links = 1;
 
-- 
1.9.0

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