ASoC: audio-graph-card2: remove ports node name check

Current audio-graph-card2 is checking if the node name was "ports" or
not when parsing the property.

	if (of_node_name_eq(ports, "ports"))
		of_xxx(ports, ...);

Now, it is using new port_to_ports() which will be NULL if the node
doesn't have "ports", and each of_xxx functions will do nothing if
node was NULL.
Now we don't need to check ports node name. Let's remove and cleanup it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://msgid.link/r/877cfeh6gb.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/generic/audio-graph-card2.c

@@ -381,7 +381,6 @@ static void graph_parse_convert(struct device_node *ep,
 	struct device_node *ports = port_to_ports(port);
 	struct simple_util_data *adata = &props->adata;
 
-	if (of_node_name_eq(ports, "ports"))
 	simple_util_parse_convert(ports, NULL, adata);
 	simple_util_parse_convert(port, NULL, adata);
 	simple_util_parse_convert(ep,   NULL, adata);
@@ -396,7 +395,6 @@ static void graph_parse_mclk_fs(struct device_node *ep,
 	struct device_node *port	= ep_to_port(ep);
 	struct device_node *ports	= port_to_ports(port);
 
-	if (of_node_name_eq(ports, "ports"))
 	of_property_read_u32(ports,	"mclk-fs", &props->mclk_fs);
 	of_property_read_u32(port,	"mclk-fs", &props->mclk_fs);
 	of_property_read_u32(ep,	"mclk-fs", &props->mclk_fs);
@@ -496,7 +494,6 @@ static int __graph_parse_node(struct simple_util_priv *priv,
 		struct device_node *rport  = ep_to_port(ep);
 		struct device_node *rports = port_to_ports(rport);
 
-		if (of_node_name_eq(rports, "ports"))
 		snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix");
 		snd_soc_of_parse_node_prefix(rport,  cconf, codecs->of_node, "prefix");
 
@@ -717,6 +714,9 @@ static void graph_parse_daifmt(struct device_node *node,
 {
 	unsigned int fmt;
 
+	if (!node)
+		return;
+
 	/*
 	 * see also above "daifmt" explanation
 	 * and samples.
@@ -798,7 +798,6 @@ static void graph_link_init(struct simple_util_priv *priv,
 	 */
 	graph_parse_daifmt(ep,    &daifmt, &bit_frame);		/* (C) */
 	graph_parse_daifmt(port,  &daifmt, &bit_frame);		/* (B) */
-	if (of_node_name_eq(ports, "ports"))
 	graph_parse_daifmt(ports, &daifmt, &bit_frame);		/* (A) */
 
 	/*

sound/soc/generic/simple-card-utils.c

@@ -60,6 +60,9 @@ void simple_util_parse_convert(struct device_node *np,
 {
 	char prop[128];
 
+	if (!np)
+		return;
+
 	if (!prefix)
 		prefix = "";