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iio: buffer: dmaengine: obtain buffer object from attribute

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The reference to the IIO buffer object is stored on the attribute object.
So we need to unwind it to obtain it.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-16-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2021-02-15 12:40:34 +02:00 committed by Jonathan Cameron
parent 15097c7a1a
commit 4991f3ea2a
1 changed files with 2 additions and 2 deletions
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4
drivers/iio/buffer/industrialio-buffer-dmaengine.c
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@ -132,9 +132,9 @@ static const struct iio_dma_buffer_ops iio_dmaengine_default_ops = {
static ssize_t iio_dmaengine_buffer_get_length_align(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
struct dmaengine_buffer *dmaengine_buffer =
iio_buffer_to_dmaengine_buffer(indio_dev->buffer);
iio_buffer_to_dmaengine_buffer(buffer);
return sprintf(buf, "%zu\n", dmaengine_buffer->align);
}