linux-imx

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>