forked from luck/tmp_suning_uos_patched
iio: buffer: Fix demux table creation
When creating the demux table we need to iterate over the selected scan mask for the buffer to get the samples which should be copied to destination buffer. Right now the code uses the mask which contains all active channels, which means the demux table contains entries which causes it to copy all the samples from source to destination buffer one by one without doing any demuxing. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: Stable@vger.kernel.org
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@ -966,7 +966,7 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev,
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/* Now we have the two masks, work from least sig and build up sizes */
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for_each_set_bit(out_ind,
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indio_dev->active_scan_mask,
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buffer->scan_mask,
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indio_dev->masklength) {
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in_ind = find_next_bit(indio_dev->active_scan_mask,
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indio_dev->masklength,
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