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iio: introduced iio_push_to_buffers_with_ts() that takes a data_total_len argument.

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Check that data_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.

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250413103443.2420727-6-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jonathan Cameron
2025-04-13 11:34:28 +01:00
parent 0b9c738f9c
commit 8f08055bc6
1 changed files with 12 additions and 0 deletions
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12
include/linux/iio/buffer.h
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@@ -45,6 +45,18 @@ 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 data_total_len,
s64 timestamp)
{
if (unlikely(data_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);