ASoC: cs4270: Move regulator acquisition to I2C probe()
This is better style since it has us obtaining all resources before we
try the ASoC probe. This change also fixes a potential issue where we
don't enable the regulators before trying to confirm the device ID which
could cause a failure during probe in some system configurations.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Timur Tabi <timur@freescale.com>
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index c6e5a73..64c29b8 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -487,7 +487,7 @@
static int cs4270_probe(struct snd_soc_codec *codec)
{
struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
- int i, ret;
+ int ret;
/* Tell ASoC what kind of I/O to use to read the registers. ASoC will
* then do the I2C transactions itself.
@@ -521,25 +521,8 @@
return ret;
}
- /* get the power supply regulators */
- for (i = 0; i < ARRAY_SIZE(supply_names); i++)
- cs4270->supplies[i].supply = supply_names[i];
-
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
- if (ret < 0)
- return ret;
-
ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),
cs4270->supplies);
- if (ret < 0)
- goto error_free_regulators;
-
- return 0;
-
-error_free_regulators:
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
return ret;
}
@@ -555,7 +538,6 @@
struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
return 0;
};
@@ -658,7 +640,24 @@
{
struct device_node *np = i2c_client->dev.of_node;
struct cs4270_private *cs4270;
- int ret;
+ int ret, i;
+
+ cs4270 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private),
+ GFP_KERNEL);
+ if (!cs4270) {
+ dev_err(&i2c_client->dev, "could not allocate codec\n");
+ return -ENOMEM;
+ }
+
+ /* get the power supply regulators */
+ for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+ cs4270->supplies[i].supply = supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c_client->dev,
+ ARRAY_SIZE(cs4270->supplies),
+ cs4270->supplies);
+ if (ret < 0)
+ return ret;
/* See if we have a way to bring the codec out of reset */
if (np) {
@@ -694,13 +693,6 @@
i2c_client->addr);
dev_info(&i2c_client->dev, "hardware revision %X\n", ret & 0xF);
- cs4270 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private),
- GFP_KERNEL);
- if (!cs4270) {
- dev_err(&i2c_client->dev, "could not allocate codec\n");
- return -ENOMEM;
- }
-
i2c_set_clientdata(i2c_client, cs4270);
cs4270->control_type = SND_SOC_I2C;
