[PATCH] ASoC: ti: j721e-evm: allocate dai_links with priv

[Rosen Penev <rosenp@gmail.com>]

Use a flexible array member to combine allocations. Simplifies the code
slightly.

Remove open coding of of_device_get_match_data as well as unnecessary
NULL checks. of_device_get_match_data cannot fail. All compatible
entries have a corresponding data section.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 sound/soc/ti/j721e-evm.c | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/sound/soc/ti/j721e-evm.c b/sound/soc/ti/j721e-evm.c
index faa62c1a9b8e..cbb10781e042 100644
--- a/sound/soc/ti/j721e-evm.c
+++ b/sound/soc/ti/j721e-evm.c
@@ -74,7 +74,6 @@ struct j721e_audio_domain {
 struct j721e_priv {
 	struct device *dev;
 	struct snd_soc_card card;
-	struct snd_soc_dai_link *dai_links;
 	struct snd_soc_codec_conf codec_conf[J721E_CODEC_CONF_COUNT];
 	struct snd_interval rate_range;
 	const struct j721e_audio_match_data *match_data;
@@ -84,6 +83,7 @@ struct j721e_priv {
 	struct j721e_audio_domain audio_domains[J721E_AUDIO_DOMAIN_LAST];
 
 	struct mutex mutex;
+	struct snd_soc_dai_link dai_links[];
 };
 
 static const struct snd_soc_dapm_widget j721e_cpb_dapm_widgets[] = {
@@ -844,33 +844,18 @@ static int j721e_soc_probe_ivi(struct j721e_priv *priv, int *link_idx,
 
 static int j721e_soc_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
+	const struct j721e_audio_match_data *match;
 	struct snd_soc_card *card;
-	const struct of_device_id *match;
 	struct j721e_priv *priv;
 	int link_cnt, conf_cnt, ret, i;
 
-	if (!node) {
-		dev_err(&pdev->dev, "of node is missing.\n");
-		return -ENODEV;
-	}
-
-	match = of_match_node(j721e_audio_of_match, node);
-	if (!match) {
-		dev_err(&pdev->dev, "No compatible match found\n");
-		return -ENODEV;
-	}
-
-	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	match = of_device_get_match_data(&pdev->dev);
+	priv = devm_kzalloc(&pdev->dev,
+			struct_size(priv, dai_links, match->num_links), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
-	priv->match_data = match->data;
-
-	priv->dai_links = devm_kcalloc(&pdev->dev, priv->match_data->num_links,
-				       sizeof(*priv->dai_links), GFP_KERNEL);
-	if (!priv->dai_links)
-		return -ENOMEM;
+	priv->match_data = match;
 
 	for (i = 0; i < J721E_AUDIO_DOMAIN_LAST; i++)
 		priv->audio_domains[i].parent_clk_id = -1;
-- 
2.54.0