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iio: dac: ad3552r: Use device_for_each_child_node_scoped()

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Switching to the _scoped() version removes the need for manual
calling of fwnode_handle_put() in the paths where the code
exits the loop early. In this case that's all in error paths.

Removing the goto err; statements also allows more extensive use of
dev_err_probe() further simplifying the code.

Cc: Mihail Chindris <mihail.chindris@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240330185305.1319844-8-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jonathan Cameron 2024-03-30 18:53:04 +00:00
parent 6020ca4de8
commit 2d766e79ba
1 changed files with 19 additions and 32 deletions
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51
drivers/iio/dac/ad3552r.c
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@ -880,7 +880,6 @@ static void ad3552r_reg_disable(void *reg)
static int ad3552r_configure_device(struct ad3552r_desc *dac)
{
struct device *dev = &dac->spi->dev;
struct fwnode_handle *child;
struct regulator *vref;
int err, cnt = 0, voltage, delta = 100000;
u32 vals[2], val, ch;
@ -949,53 +948,45 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
return -ENODEV;
}
device_for_each_child_node(dev, child) {
device_for_each_child_node_scoped(dev, child) {
err = fwnode_property_read_u32(child, "reg", &ch);
if (err) {
dev_err(dev, "mandatory reg property missing\n");
goto put_child;
}
if (ch >= AD3552R_NUM_CH) {
dev_err(dev, "reg must be less than %d\n",
AD3552R_NUM_CH);
err = -EINVAL;
goto put_child;
}
if (err)
return dev_err_probe(dev, err,
"mandatory reg property missing\n");
if (ch >= AD3552R_NUM_CH)
return dev_err_probe(dev, -EINVAL,
"reg must be less than %d\n",
AD3552R_NUM_CH);
if (fwnode_property_present(child, "adi,output-range-microvolt")) {
err = fwnode_property_read_u32_array(child,
"adi,output-range-microvolt",
vals,
2);
if (err) {
dev_err(dev,
if (err)
return dev_err_probe(dev, err,
"adi,output-range-microvolt property could not be parsed\n");
goto put_child;
}
err = ad3552r_find_range(dac->chip_id, vals);
if (err < 0) {
dev_err(dev,
"Invalid adi,output-range-microvolt value\n");
goto put_child;
}
if (err < 0)
return dev_err_probe(dev, err,
"Invalid adi,output-range-microvolt value\n");
val = err;
err = ad3552r_set_ch_value(dac,
AD3552R_CH_OUTPUT_RANGE_SEL,
ch, val);
if (err)
goto put_child;
return err;
dac->ch_data[ch].range = val;
} else if (dac->chip_id == AD3542R_ID) {
dev_err(dev,
"adi,output-range-microvolt is required for ad3542r\n");
err = -EINVAL;
goto put_child;
return dev_err_probe(dev, -EINVAL,
"adi,output-range-microvolt is required for ad3542r\n");
} else {
err = ad3552r_configure_custom_gain(dac, child, ch);
if (err)
goto put_child;
return err;
}
ad3552r_calc_gain_and_offset(dac, ch);
@ -1003,7 +994,7 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1);
if (err < 0)
goto put_child;
return err;
dac->channels[cnt] = AD3552R_CH_DAC(ch);
++cnt;
@ -1021,10 +1012,6 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
dac->num_ch = cnt;
return 0;
put_child:
fwnode_handle_put(child);
return err;
}
static int ad3552r_init(struct ad3552r_desc *dac)