ASoC: soc-topology.c: dai_link->platform again

On SOF, many topology is assuming dai_link->platform exists, and is
allowed to be overwritten on each link_load().
This patch restore the removed dai_link->platform for SOF, and add
the comment.

Fixes: e7098ba9b378 ("ASoC: soc-topology.c: remove unnecessary dai_link->platform")
Reported-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/87jzz7jczp.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/87v8ikcsr5.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index be9849749713c5db44c16aea9d5d9f2d3b9788e6..d0aca6b9058b28bc64cfb3a88ef77c208726b9b7 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1685,8 +1685,8 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
        struct snd_soc_dai_link_component *dlc;
        int ret;
 
-       /* link + cpu + codec */
-       link = devm_kzalloc(tplg->dev, sizeof(*link) + (2 * sizeof(*dlc)), GFP_KERNEL);
+       /* link + cpu + codec + platform */
+       link = devm_kzalloc(tplg->dev, sizeof(*link) + (3 * sizeof(*dlc)), GFP_KERNEL);
        if (link == NULL)
                return -ENOMEM;
 
@@ -1724,6 +1724,14 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
        link->codecs->name = "snd-soc-dummy";
        link->codecs->dai_name = "snd-soc-dummy-dai";
 
+       /*
+        * Many topology is assuming link has Platform.
+        * This might be overwritten at soc_tplg_dai_link_load().
+        */
+       link->platforms = &dlc[2];
+       link->platforms->name = "snd-soc-dummy";
+       link->num_platforms = 1;
+
        /* enable DPCM */
        link->dynamic = 1;
        link->ignore_pmdown_time = 1;