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iio: adc: at91-sama5d2: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: 5e1a1da0f8
("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-2-jic23@kernel.org
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@ -403,7 +403,8 @@ struct at91_adc_state {
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struct at91_adc_dma dma_st;
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struct at91_adc_touch touch_st;
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struct iio_dev *indio_dev;
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u16 buffer[AT91_BUFFER_MAX_HWORDS];
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/* Ensure naturally aligned timestamp */
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u16 buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8);
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/*
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* lock to prevent concurrent 'single conversion' requests through
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* sysfs.
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