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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2018-11-21 03:09:16 +0100
committerMark Brown <broonie@kernel.org>2018-11-21 14:28:19 +0100
commitf31a17105560f5f074f4d26fd5469a221f50af18 (patch)
treec4f1fd80f734ee43bd67d142d65eb9abd70805b1 /sound/soc/generic/simple-card-utils.c
parentASoC: simple-card-utils: remove asoc_simple_card_clk_register() (diff)
downloadlinux-f31a17105560f5f074f4d26fd5469a221f50af18.tar.xz
linux-f31a17105560f5f074f4d26fd5469a221f50af18.zip
ASoC: simple-card-utils: accept NULL parameter on asoc_simple_card_xxx()
If simple-card-utils accept NULL pointer on asoc_simple_card_xxx(), each driver code will be more simple. Let's accept NULL pointer. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to '')
-rw-r--r--sound/soc/generic/simple-card-utils.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 996bfe42bc8d..f3183a4718b3 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -153,13 +153,17 @@ EXPORT_SYMBOL_GPL(asoc_simple_card_parse_card_name);
int asoc_simple_card_clk_enable(struct asoc_simple_dai *dai)
{
- return clk_prepare_enable(dai->clk);
+ if (dai)
+ return clk_prepare_enable(dai->clk);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_clk_enable);
void asoc_simple_card_clk_disable(struct asoc_simple_dai *dai)
{
- clk_disable_unprepare(dai->clk);
+ if (dai)
+ clk_disable_unprepare(dai->clk);
}
EXPORT_SYMBOL_GPL(asoc_simple_card_clk_disable);
@@ -342,6 +346,9 @@ int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
{
int ret;
+ if (!simple_dai)
+ return 0;
+
if (simple_dai->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
simple_dai->clk_direction);