[PATCH 6.1 180/192] ASoc: SOF: topology: Clear SOF link platform name upon unload

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>

[ Upstream commit e0be875c5bf03a9676a6bfed9e0f1766922a7dbd ]

The SOF topology loading function sets the device name for the platform
component link. This should be unset when unloading the topology,
otherwise a machine driver unbind/bind or reprobe would complain about
an invalid component as having both its component name and of_node set:

    mt8186_mt6366 sound: ASoC: Both Component name/of_node are set for AFE_SOF_DL1
    mt8186_mt6366 sound: error -EINVAL: Cannot register card
    mt8186_mt6366 sound: probe with driver mt8186_mt6366 failed with error -22

This happens with machine drivers that set the of_node separately.

Clear the SOF link platform name in the topology unload callback.

Fixes: 311ce4fe7637 ("ASoC: SOF: Add support for loading topologies")
Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Link: https://patch.msgid.link/20240821041006.2618855-1-wenst@xxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 sound/soc/sof/topology.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index e7305ce57ea1..374c8b1d6958 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -1817,6 +1817,8 @@ static int sof_link_unload(struct snd_soc_component *scomp, struct snd_soc_dobj
 	if (!slink)
 		return 0;
 
+	slink->link->platforms->name = NULL;
+
 	kfree(slink->tuples);
 	list_del(&slink->list);
 	kfree(slink->hw_configs);
-- 
2.43.0







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