diff options
| author | Cezary Rojewski <cezary.rojewski@intel.com> | 2022-10-27 11:58:40 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-11-18 18:38:27 +0300 |
| commit | c7eb967d70446971413061effca3226578cb4dab (patch) | |
| tree | 8ea7303efb23c892a869343c5bc669e5a178fbba /sound | |
| parent | 4c8bcfd3e1c30edbf252529f7189da87d169f1dd (diff) | |
| download | linux-c7eb967d70446971413061effca3226578cb4dab.tar.xz | |
ASoC: core: Exit all links before removing their components
Flows leading to link->init() and link->exit() are not symmetric.
Currently the relevant part of card probe sequence goes as:
for_each_card_rtds(card, rtd)
for_each_rtd_components(rtd, i, component)
component->probe()
for_each_card_rtds(card, rtd)
for_each_rtd_dais(rtd, i, dai)
dai->probe()
for_each_card_rtds(card, rtd)
rtd->init()
On the other side, equivalent remove sequence goes as:
for_each_card_rtds(card, rtd)
for_each_rtd_dais(rtd, i, dai)
dai->remove()
for_each_card_rtds(card, rtd)
for_each_rtd_components(rtd, i, component)
component->remove()
for_each_card_rtds(card, rtd)
rtd->exit()
what can lead to errors as link->exit() may still operate on resources
owned by its components despite the probability of them being freed
during the component->remove().
This change modifies the remove sequence to:
for_each_card_rtds(card, rtd)
rtd->exit()
for_each_card_rtds(card, rtd)
for_each_rtd_dais(rtd, i, dai)
dai->remove()
for_each_card_rtds(card, rtd)
for_each_rtd_components(rtd, i, component)
component->remove()
so code found in link->exit() is safe to touch any component stuff as
component->remove() has not been called yet.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20221027085840.1562698-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index ec554c3bdafc..d8b092f129ae 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -939,9 +939,6 @@ void snd_soc_remove_pcm_runtime(struct snd_soc_card *card, { lockdep_assert_held(&client_mutex); - /* release machine specific resources */ - snd_soc_link_exit(rtd); - /* * Notify the machine driver for extra destruction */ @@ -1890,6 +1887,9 @@ static void soc_cleanup_card_resources(struct snd_soc_card *card) snd_soc_dapm_shutdown(card); + /* release machine specific resources */ + for_each_card_rtds(card, rtd) + snd_soc_link_exit(rtd); /* remove and free each DAI */ soc_remove_link_dais(card); soc_remove_link_components(card); |