ASoC: soc-core: call snd_soc_unbind_card() under mutex_lock;
commit
34ac3c3eb8f0c07 ("ASoC: core: lock client_mutex while removing
link components") added mutex_lock() at soc_remove_link_components().
Is is called from snd_soc_unbind_card()
snd_soc_unbind_card()
=> soc_remove_link_components()
soc_cleanup_card_resources()
soc_remove_dai_links()
=> soc_remove_link_components()
And, there are 2 way to call it.
(1)
snd_soc_unregister_component()
** mutex_lock()
snd_soc_component_del_unlocked()
=> snd_soc_unbind_card()
** mutex_unlock()
(2)
snd_soc_unregister_card()
=> snd_soc_unbind_card()
(1) case is already using mutex_lock() when it calles
snd_soc_unbind_card(), thus, we will get lockdep warning.
commit
495f926c68ddb90 ("ASoC: core: Fix deadlock in
snd_soc_instantiate_card()") tried to fixup it, but still not
enough. We still have lockdep warning when we try unbind/bind.
We need mutex_lock() under snd_soc_unregister_card()
instead of snd_remove_link_components()/snd_soc_unbind_card().
Fixes:
34ac3c3eb8f0c07 ("ASoC: core: lock client_mutex while removing link components")
Fixes:
495f926c68ddb90 ("ASoC: core: Fix deadlock in snd_soc_instantiate_card()")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>