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From: Anders Roxell <>
	Anders Roxell <>
Subject: [PATCH 1/3] ASoC: cs4341: fix waring unused-function
Date: Mon, 14 Jan 2019 10:55:40 +0100
Message-ID: <> (raw)

The driver cs4341 can be built with SPI and/or I2C, but it has to be one
of them at least. When I2C is set as a module we see the warning below:

sound/soc/codecs/cs4341.c:213:12: warning: ‘cs4341_probe’
defined but not used [-Wunused-function]
 static int cs4341_probe(struct device *dev)

Rework so that we use IS_ENABLED instead of defined. Also change so
SND_SOC_CS4341 depends on SND_SOC_I2C_AND_SPI to we dont' get a link
error when SND_SOC_CS4341=y, I2C=m and REGMAP_I2C=m is set.

Suggested-by: Arnd Bergmann <>
Signed-off-by: Anders Roxell <>
 sound/soc/codecs/Kconfig  | 2 +-
 sound/soc/codecs/cs4341.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 87cb9c51e6f5..87ecb38e57f4 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -546,7 +546,7 @@ config SND_SOC_CS43130
 config SND_SOC_CS4341
 	tristate "Cirrus Logic CS4341 CODEC"
-	depends on I2C || SPI_MASTER
+	depends on SND_SOC_I2C_AND_SPI
 	select REGMAP_I2C if I2C
diff --git a/sound/soc/codecs/cs4341.c b/sound/soc/codecs/cs4341.c
index d2e616a89fd4..ade7477d04f1 100644
--- a/sound/soc/codecs/cs4341.c
+++ b/sound/soc/codecs/cs4341.c
@@ -223,7 +223,7 @@ static int cs4341_probe(struct device *dev)
 					       &cs4341_dai, 1);
-#if defined(CONFIG_I2C)
 static int cs4341_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
@@ -317,7 +317,7 @@ static int __init cs4341_init(void)
 	int ret = 0;
-#if defined(CONFIG_I2C)
 	ret = i2c_add_driver(&cs4341_i2c_driver);
 	if (ret)
 		return ret;
@@ -332,7 +332,7 @@ module_init(cs4341_init);
 static void __exit cs4341_exit(void)
-#if defined(CONFIG_I2C)
 #if defined(CONFIG_SPI_MASTER)

             reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-14  9:55 Anders Roxell [this message]
2019-01-14 11:24 ` Mark Brown
2019-01-14 12:49   ` Anders Roxell
2019-01-14 14:08     ` Mark Brown
2019-01-14 23:04 ` Applied "ASoC: cs4341: fix waring unused-function" to the asoc tree Mark Brown

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