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path: root/drivers/iio/dac/ltc2688.c
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Diffstat (limited to 'drivers/iio/dac/ltc2688.c')
-rw-r--r--drivers/iio/dac/ltc2688.c28
1 files changed, 8 insertions, 20 deletions
diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
index fc8eb53c65..c4b1ba30f9 100644
--- a/drivers/iio/dac/ltc2688.c
+++ b/drivers/iio/dac/ltc2688.c
@@ -746,26 +746,21 @@ static int ltc2688_span_lookup(const struct ltc2688_state *st, int min, int max)
static int ltc2688_channel_config(struct ltc2688_state *st)
{
struct device *dev = &st->spi->dev;
- struct fwnode_handle *child;
u32 reg, clk_input, val, tmp[2];
int ret, span;
- device_for_each_child_node(dev, child) {
+ device_for_each_child_node_scoped(dev, child) {
struct ltc2688_chan *chan;
ret = fwnode_property_read_u32(child, "reg", &reg);
- if (ret) {
- fwnode_handle_put(child);
+ if (ret)
return dev_err_probe(dev, ret,
"Failed to get reg property\n");
- }
- if (reg >= LTC2688_DAC_CHANNELS) {
- fwnode_handle_put(child);
+ if (reg >= LTC2688_DAC_CHANNELS)
return dev_err_probe(dev, -EINVAL,
"reg bigger than: %d\n",
LTC2688_DAC_CHANNELS);
- }
val = 0;
chan = &st->channels[reg];
@@ -786,12 +781,10 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
if (!ret) {
span = ltc2688_span_lookup(st, (int)tmp[0] / 1000,
tmp[1] / 1000);
- if (span < 0) {
- fwnode_handle_put(child);
- return dev_err_probe(dev, -EINVAL,
+ if (span < 0)
+ return dev_err_probe(dev, span,
"output range not valid:[%d %d]\n",
tmp[0], tmp[1]);
- }
val |= FIELD_PREP(LTC2688_CH_SPAN_MSK, span);
}
@@ -800,17 +793,14 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
&clk_input);
if (!ret) {
if (clk_input >= LTC2688_CH_TGP_MAX) {
- fwnode_handle_put(child);
return dev_err_probe(dev, -EINVAL,
"toggle-dither-input inv value(%d)\n",
clk_input);
}
ret = ltc2688_tgp_clk_setup(st, chan, child, clk_input);
- if (ret) {
- fwnode_handle_put(child);
+ if (ret)
return ret;
- }
/*
* 0 means software toggle which is the default mode.
@@ -844,11 +834,9 @@ static int ltc2688_channel_config(struct ltc2688_state *st)
ret = regmap_write(st->regmap, LTC2688_CMD_CH_SETTING(reg),
val);
- if (ret) {
- fwnode_handle_put(child);
- return dev_err_probe(dev, -EINVAL,
+ if (ret)
+ return dev_err_probe(dev, ret,
"failed to set chan settings\n");
- }
}
return 0;