From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Check that total_len argument against iio_dev->scan_bytes.
The size needs to be at least as big as the scan. It can be larger,
which is typical if only part of fixed sized storage is used due to
a subset of channels being enabled.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
include/linux/iio/buffer.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 3b8d618bb3df..75d5e58b646b 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -45,6 +45,19 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
return iio_push_to_buffers(indio_dev, data);
}
+static inline int iio_push_to_buffers_with_ts(struct iio_dev *indio_dev,
+ void *data, size_t total_len,
+ int64_t timestamp)
+{
+ if (total_len < indio_dev->scan_bytes) {
+ dev_err(&indio_dev->dev,
+ "Undersized storage pushed to buffer\n");
+ return -ENOSPC;
+ }
+
+ return iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp);
+}
+
int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
const void *data, size_t data_sz,
int64_t timestamp);
--
2.48.1
