[alsa-devel] [PATCH] ASoC: soc-core: fix RIP warning on card removal

[Pierre-Louis Bossart]

SOF module load/unload tests show nasty recurring warnings:

WARNING: CPU: 5 PID: 1339 at sound/core/control.c:466
snd_ctl_remove+0xf0/0x100 [snd]
RIP: 0010:snd_ctl_remove+0xf0/0x100 [snd]

This regression was introduced by the removal of the call to
soc_remove_link_components() before soc_card_free() is invoked.

Go back to the initial order but only call
soc_remove_link_components() once.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Fixes: 5a4c9f054ceea ("ASoC: soc-core: snd_soc_unbind_card() cleanup")
GitHub issue: https://github.com/thesofproject/linux/issues/1424
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/soc-core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b07ecfac39d7..1e08fb5da170 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1951,6 +1951,9 @@ static void soc_cleanup_card_resources(struct snd_soc_card *card)
 {
 	struct snd_soc_dai_link *link, *_link;
 
+	/* This should be called before snd_card_free() */
+	soc_remove_link_components(card);
+
 	/* free the ALSA card at first; this syncs with pending operations */
 	if (card->snd_card) {
 		snd_card_free(card->snd_card);
@@ -1959,7 +1962,6 @@ static void soc_cleanup_card_resources(struct snd_soc_card *card)
 
 	/* remove and free each DAI */
 	soc_remove_link_dais(card);
-	soc_remove_link_components(card);
 
 	for_each_card_links_safe(card, link, _link)
 		snd_soc_remove_dai_link(card, link);
-- 
2.20.1