ASoC: topology: Add missing rwsem around snd_ctl_remove() calls

[ Upstream commit 7e567b5ae06315ef2d70666b149962e2bb4b97af ]

snd_ctl_remove() has to be called with card->controls_rwsem held (when
called after the card instantiation).  This patch add the missing
rwsem calls around it.

Fixes: 8a9782346dcc ("ASoC: topology: Add topology core")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20211116071812.18109-1-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 1030e11017b2746527377daba04b5d737be08371..4d24ac255d2532a64def67a2b04a9011a05ef087 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -2873,6 +2873,7 @@ EXPORT_SYMBOL_GPL(snd_soc_tplg_widget_remove_all);
 /* remove dynamic controls from the component driver */
 int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
 {
+       struct snd_card *card = comp->card->snd_card;
        struct snd_soc_dobj *dobj, *next_dobj;
        int pass = SOC_TPLG_PASS_END;
 
@@ -2880,6 +2881,7 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
        while (pass >= SOC_TPLG_PASS_START) {
 
                /* remove mixer controls */
+               down_write(&card->controls_rwsem);
                list_for_each_entry_safe(dobj, next_dobj, &comp->dobj_list,
                        list) {
 
@@ -2923,6 +2925,7 @@ int snd_soc_tplg_component_remove(struct snd_soc_component *comp, u32 index)
                                break;
                        }
                }
+               up_write(&card->controls_rwsem);
                pass--;
        }