iio: dac: ad3552r: Use device_for_each_child_node_scoped()
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>
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@ -880,7 +880,6 @@ static void ad3552r_reg_disable(void *reg)
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static int ad3552r_configure_device(struct ad3552r_desc *dac)
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{
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struct device *dev = &dac->spi->dev;
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struct fwnode_handle *child;
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struct regulator *vref;
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int err, cnt = 0, voltage, delta = 100000;
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u32 vals[2], val, ch;
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@ -949,53 +948,45 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
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return -ENODEV;
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}
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device_for_each_child_node(dev, child) {
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device_for_each_child_node_scoped(dev, child) {
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err = fwnode_property_read_u32(child, "reg", &ch);
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if (err) {
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dev_err(dev, "mandatory reg property missing\n");
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goto put_child;
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}
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if (ch >= AD3552R_NUM_CH) {
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dev_err(dev, "reg must be less than %d\n",
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AD3552R_NUM_CH);
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err = -EINVAL;
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goto put_child;
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}
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if (err)
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return dev_err_probe(dev, err,
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"mandatory reg property missing\n");
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if (ch >= AD3552R_NUM_CH)
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return dev_err_probe(dev, -EINVAL,
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"reg must be less than %d\n",
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AD3552R_NUM_CH);
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if (fwnode_property_present(child, "adi,output-range-microvolt")) {
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err = fwnode_property_read_u32_array(child,
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"adi,output-range-microvolt",
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vals,
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2);
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if (err) {
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dev_err(dev,
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if (err)
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return dev_err_probe(dev, err,
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"adi,output-range-microvolt property could not be parsed\n");
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goto put_child;
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}
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err = ad3552r_find_range(dac->chip_id, vals);
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if (err < 0) {
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dev_err(dev,
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"Invalid adi,output-range-microvolt value\n");
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goto put_child;
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}
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if (err < 0)
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return dev_err_probe(dev, err,
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"Invalid adi,output-range-microvolt value\n");
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val = err;
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err = ad3552r_set_ch_value(dac,
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AD3552R_CH_OUTPUT_RANGE_SEL,
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ch, val);
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if (err)
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goto put_child;
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return err;
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dac->ch_data[ch].range = val;
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} else if (dac->chip_id == AD3542R_ID) {
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dev_err(dev,
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"adi,output-range-microvolt is required for ad3542r\n");
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err = -EINVAL;
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goto put_child;
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return dev_err_probe(dev, -EINVAL,
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"adi,output-range-microvolt is required for ad3542r\n");
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} else {
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err = ad3552r_configure_custom_gain(dac, child, ch);
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if (err)
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goto put_child;
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return err;
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}
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ad3552r_calc_gain_and_offset(dac, ch);
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@ -1003,7 +994,7 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
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err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1);
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if (err < 0)
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goto put_child;
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return err;
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dac->channels[cnt] = AD3552R_CH_DAC(ch);
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++cnt;
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@ -1021,10 +1012,6 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac)
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dac->num_ch = cnt;
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return 0;
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put_child:
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fwnode_handle_put(child);
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return err;
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}
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static int ad3552r_init(struct ad3552r_desc *dac)
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