diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 5ff34ce8b6a2..e6fa1a4e135d 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -686,6 +686,13 @@ static int iio_verify_update(struct iio_dev *indio_dev, bool scan_timestamp; unsigned int modes; + if (insert_buffer && + bitmap_empty(insert_buffer->scan_mask, indio_dev->masklength)) { + dev_dbg(&indio_dev->dev, + "At least one scan element must be enabled first\n"); + return -EINVAL; + } + memset(config, 0, sizeof(*config)); config->watermark = ~0; |