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iio: adc: max1027: unlock on error path in max1027_read_single_value() 

If max1027_wait_eoc() fails then call iio_device_release_direct_mode()
before returning.

Fixes: a0e831653e ("iio: adc: max1027: Introduce an end of conversion helper")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YsbztVuAXnau2cIZ@kili
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Dan Carpenter 2022-07-07 17:54:45 +03:00 committed by Jonathan Cameron
parent 7aa68dcce0
commit 06ee60eb50
1 changed files with 3 additions and 3 deletions
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6
drivers/iio/adc/max1027.c
View File

@ -349,8 +349,7 @@ static int max1027_read_single_value(struct iio_dev *indio_dev,
if (ret < 0) {
dev_err(&indio_dev->dev,
"Failed to configure conversion register\n");
iio_device_release_direct_mode(indio_dev);
return ret;
goto release;
}
/*
@ -360,11 +359,12 @@ static int max1027_read_single_value(struct iio_dev *indio_dev,
*/
ret = max1027_wait_eoc(indio_dev);
if (ret)
return ret;
goto release;
/* Read result */
ret = spi_read(st->spi, st->buffer, (chan->type == IIO_TEMP) ? 4 : 2);
release:
iio_device_release_direct_mode(indio_dev);
if (ret < 0)