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ASoC: core: Fix deadlock in snd_soc_instantiate_card() 

Move the client_mutex lock to snd_soc_unbind_card() before
removing link components. This prevents the deadlock
in the error path in snd_soc_instantiate_card().

Fixes: 34ac3c3eb8 (ASoC: core: lock client_mutex while removing
link components)
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.2
Ranjani Sridharan 2019-06-07 22:07:06 -07:00 committed by Mark Brown
parent 04268bf275
commit 495f926c68
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
sound/soc/soc-core.c
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@ -1008,14 +1008,12 @@ static void soc_remove_link_components(struct snd_soc_card *card,
struct snd_soc_component *component;
struct snd_soc_rtdcom_list *rtdcom;
mutex_lock(&client_mutex);
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (component->driver->remove_order == order)
soc_remove_component(component);
}
mutex_unlock(&client_mutex);
}
static void soc_remove_dai_links(struct snd_soc_card *card)
@ -2839,12 +2837,14 @@ static void snd_soc_unbind_card(struct snd_soc_card *card, bool unregister)
snd_soc_dapm_shutdown(card);
snd_soc_flush_all_delayed_work(card);
mutex_lock(&client_mutex);
/* remove all components used by DAI links on this card */
for_each_comp_order(order) {
for_each_card_rtds(card, rtd) {
soc_remove_link_components(card, rtd, order);
}
}
mutex_unlock(&client_mutex);
soc_cleanup_card_resources(card);
if (!unregister)