From 946857636d279486eaa47c930930185631f28fce Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 9 Mar 2018 18:48:54 +0100 Subject: ASoC: Add snd_soc_of_put_dai_link_codecs() helper function The code for dereferencing device nodes in the 'codecs' array is moved to a separate function so we can avoid open coding that in drivers. Signed-off-by: Sylwester Nawrocki Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) (limited to 'sound/soc/soc-core.c') diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 96c44f6576c9..a1f86e85bff9 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -4397,6 +4397,26 @@ int snd_soc_of_get_dai_name(struct device_node *of_node, } EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); +/* + * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array + * @dai_link: DAI link + * + * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs(). + */ +void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link *dai_link) +{ + struct snd_soc_dai_link_component *component = dai_link->codecs; + int index; + + for (index = 0; index < dai_link->num_codecs; index++, component++) { + if (!component->of_node) + break; + of_node_put(component->of_node); + component->of_node = NULL; + } +} +EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs); + /* * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree * @dev: Card device @@ -4406,7 +4426,8 @@ EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); * Builds an array of CODEC DAI components from the DAI link property * 'sound-dai'. * The array is set in the DAI link and the number of DAIs is set accordingly. - * The device nodes in the array (of_node) must be dereferenced by the caller. + * The device nodes in the array (of_node) must be dereferenced by calling + * snd_soc_of_put_dai_link_codecs() on @dai_link. * * Returns 0 for success */ @@ -4454,14 +4475,7 @@ int snd_soc_of_get_dai_link_codecs(struct device *dev, } return 0; err: - for (index = 0, component = dai_link->codecs; - index < dai_link->num_codecs; - index++, component++) { - if (!component->of_node) - break; - of_node_put(component->of_node); - component->of_node = NULL; - } + snd_soc_of_put_dai_link_codecs(dai_link); dai_link->codecs = NULL; dai_link->num_codecs = 0; return ret; -- cgit v1.2.3