diff options
author | Liam Girdwood <lrg@ti.com> | 2012-03-07 05:38:25 -0500 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-04-01 06:28:21 -0400 |
commit | 01b9d99a1f45befa604543ead29f44fdb0878844 (patch) | |
tree | e71ae8fc98724700968b18d6756091fb3f54cf3e /sound/soc/soc-core.c | |
parent | 253322c18830965331e54ee33c5e8064a2f15717 (diff) |
ASoC: core: Add card mutex locking subclasses
This is the first part of a change that is intended to improve
ASoC locking protection for DAPM and PCM operations.
This part of the series adds a mutex class for the soc_card mutex. The
SND_SOC_CARD_CLASS_INIT class is used for card initialisation only whilst the
SND_SOC_CARD_CLASS_PCM class is used for the forth coming Dynamic
PCM operations. The new mutex classes are required otherwise we will see a false
positive mutex deadlock warning between the card initialisation and the PCM
operations (something that would never deadlock in real life).
Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-core.c')
-rw-r--r-- | sound/soc/soc-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index a4deebc0801a..a6da20a72d43 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c | |||
@@ -1416,7 +1416,7 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) | |||
1416 | struct snd_soc_dai_link *dai_link; | 1416 | struct snd_soc_dai_link *dai_link; |
1417 | int ret, i, order; | 1417 | int ret, i, order; |
1418 | 1418 | ||
1419 | mutex_lock(&card->mutex); | 1419 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); |
1420 | 1420 | ||
1421 | if (card->instantiated) { | 1421 | if (card->instantiated) { |
1422 | mutex_unlock(&card->mutex); | 1422 | mutex_unlock(&card->mutex); |