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path: root/drivers/iio/adc/dln2-adc.c
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Diffstat (limited to 'drivers/iio/adc/dln2-adc.c')
-rw-r--r--drivers/iio/adc/dln2-adc.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c
index 16407664182c..97d162a3cba4 100644
--- a/drivers/iio/adc/dln2-adc.c
+++ b/drivers/iio/adc/dln2-adc.c
@@ -248,7 +248,6 @@ static int dln2_adc_set_chan_period(struct dln2_adc *dln2,
static int dln2_adc_read(struct dln2_adc *dln2, unsigned int channel)
{
int ret, i;
- struct iio_dev *indio_dev = platform_get_drvdata(dln2->pdev);
u16 conflict;
__le16 value;
int olen = sizeof(value);
@@ -257,13 +256,9 @@ static int dln2_adc_read(struct dln2_adc *dln2, unsigned int channel)
.chan = channel,
};
- ret = iio_device_claim_direct_mode(indio_dev);
- if (ret < 0)
- return ret;
-
ret = dln2_adc_set_chan_enabled(dln2, channel, true);
if (ret < 0)
- goto release_direct;
+ return ret;
ret = dln2_adc_set_port_enabled(dln2, true, &conflict);
if (ret < 0) {
@@ -300,8 +295,6 @@ disable_port:
dln2_adc_set_port_enabled(dln2, false, NULL);
disable_chan:
dln2_adc_set_chan_enabled(dln2, channel, false);
-release_direct:
- iio_device_release_direct_mode(indio_dev);
return ret;
}
@@ -337,10 +330,16 @@ static int dln2_adc_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_RAW:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret < 0)
+ return ret;
+
mutex_lock(&dln2->mutex);
ret = dln2_adc_read(dln2, chan->channel);
mutex_unlock(&dln2->mutex);
+ iio_device_release_direct_mode(indio_dev);
+
if (ret < 0)
return ret;
@@ -656,7 +655,11 @@ static int dln2_adc_probe(struct platform_device *pdev)
return -ENOMEM;
}
iio_trigger_set_drvdata(dln2->trig, dln2);
- devm_iio_trigger_register(dev, dln2->trig);
+ ret = devm_iio_trigger_register(dev, dln2->trig);
+ if (ret) {
+ dev_err(dev, "failed to register trigger: %d\n", ret);
+ return ret;
+ }
iio_trigger_set_immutable(indio_dev, dln2->trig);
ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,