linux-kernel - [PATCH v3 2/2] staging: greybus: remove empty callback function

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Date:   Wed, 13 Apr 2022 00:38:52 -0400
From:   Jaehee Park <jhpark1013@...il.com>
To:     johan@...nel.org
Cc:     elder@...nel.org, gregkh@...uxfoundation.org,
        greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, outreachy@...ts.linux.dev,
        jhpark1013@...il.com, Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH v3 2/2] staging: greybus: remove empty callback function

Remove the optional remove callback for the soc_codec_dev_gbaudio
structure. The only place it is referenced is
snd_soc_component_remove() which is only called if the sound_component
pointer is non-null. The null function pointers here can be optionally
ommitted. When a sound component is registered this way, the remove
callback is optional. We can safely remove the whole gbcodec_remove
function, which used to be an empty function with a void return type.

Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Jaehee Park <jhpark1013@...il.com>
---
 drivers/staging/greybus/audio_codec.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index 0f50d1e51e2c..dc030caa64ba 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -1029,12 +1029,6 @@ static int gbcodec_probe(struct snd_soc_component *comp)
 	return 0;
 }
 
-static void gbcodec_remove(struct snd_soc_component *comp)
-{
-	/* Empty function for now */
-	return;
-}
-
 static int gbcodec_write(struct snd_soc_component *comp, unsigned int reg,
 			 unsigned int value)
 {
@@ -1049,8 +1043,6 @@ static unsigned int gbcodec_read(struct snd_soc_component *comp,
 
 static const struct snd_soc_component_driver soc_codec_dev_gbaudio = {
 	.probe	= gbcodec_probe,
-	.remove	= gbcodec_remove,
-
 	.read = gbcodec_read,
 	.write = gbcodec_write,
 };
-- 
2.25.1