[PATCH v0 23/42] ASoC: soc-jack: Check notifier registration return value

From: Borislav Petkov
Date: Mon Nov 08 2021 - 05:16:02 EST


From: Borislav Petkov <bp@xxxxxxx>

Avoid homegrown notifier registration checks.

No functional changes.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: alsa-devel@xxxxxxxxxxxxxxxx
---
sound/soc/soc-jack.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
index d798765d168c..0875f5022066 100644
--- a/sound/soc/soc-jack.c
+++ b/sound/soc/soc-jack.c
@@ -181,7 +181,8 @@ EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins);
void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
struct notifier_block *nb)
{
- blocking_notifier_chain_register(&jack->notifier, nb);
+ if (blocking_notifier_chain_register(&jack->notifier, nb))
+ pr_warn("Jack status notifier already registered\n");
}
EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_register);

--
2.29.2