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iio: light: gp2ap002: Make use of the helper function dev_err_probe() 

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20211008092656.421-3-caihuoqing@baidu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Cai Huoqing 2021-10-08 17:26:54 +08:00 committed by Jonathan Cameron
parent 0d31d91e61
commit 77b91b1cbc
1 changed files with 10 additions and 14 deletions
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24
drivers/iio/light/gp2ap002.c
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@ -503,12 +503,9 @@ static int gp2ap002_probe(struct i2c_client *client,
if (!gp2ap002->is_gp2ap002s00f) {
gp2ap002->alsout = devm_iio_channel_get(dev, "alsout");
if (IS_ERR(gp2ap002->alsout)) {
if (PTR_ERR(gp2ap002->alsout) == -ENODEV) {
dev_err(dev, "no ADC, deferring...\n");
return -EPROBE_DEFER;
}
dev_err(dev, "failed to get ALSOUT ADC channel\n");
return PTR_ERR(gp2ap002->alsout);
ret = PTR_ERR(gp2ap002->alsout);
ret = (ret == -ENODEV) ? -EPROBE_DEFER : ret;
return dev_err_probe(dev, ret, "failed to get ALSOUT ADC channel\n");
}
ret = iio_get_channel_type(gp2ap002->alsout, &ch_type);
if (ret < 0)
@ -521,15 +518,14 @@ static int gp2ap002_probe(struct i2c_client *client,
}
gp2ap002->vdd = devm_regulator_get(dev, "vdd");
if (IS_ERR(gp2ap002->vdd)) {
dev_err(dev, "failed to get VDD regulator\n");
return PTR_ERR(gp2ap002->vdd);
}
if (IS_ERR(gp2ap002->vdd))
return dev_err_probe(dev, PTR_ERR(gp2ap002->vdd),
"failed to get VDD regulator\n");
gp2ap002->vio = devm_regulator_get(dev, "vio");
if (IS_ERR(gp2ap002->vio)) {
dev_err(dev, "failed to get VIO regulator\n");
return PTR_ERR(gp2ap002->vio);
}
if (IS_ERR(gp2ap002->vio))
return dev_err_probe(dev, PTR_ERR(gp2ap002->vio),
"failed to get VIO regulator\n");
/* Operating voltage 2.4V .. 3.6V according to datasheet */
ret = regulator_set_voltage(gp2ap002->vdd, 2400000, 3600000);