ASoC: rcar: skip disabled-SSI nodes

The current device tree representation of the R-Car SSI assumes that they
are numbered consecutively, starting from 0. Alas, this is not the case
with the R8A77995 (D3) SoC which SSI1/SSI2 aren't present. In order to
keep the existing device trees working, I'm suggesting to use a disabled
node for SSI0/SSI1. Teach the SSI probe to just skip disabled nodes.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fffc07e7262741781dbe1bf00e9acb05c3c5a766..03c2a1f02643b8eac6a56918a759b8fb95352f72 100644 (file)
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -1112,6 +1112,9 @@ int rsnd_ssi_probe(struct rsnd_priv *priv)
 
        i = 0;
        for_each_child_of_node(node, np) {
+               if (!of_device_is_available(np))
+                       goto skip;
+
                ssi = rsnd_ssi_get(priv, i);
 
                snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d",
@@ -1148,7 +1151,7 @@ int rsnd_ssi_probe(struct rsnd_priv *priv)
                        of_node_put(np);
                        goto rsnd_ssi_probe_done;
                }
-
+skip:
                i++;
        }