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iio: adc: hx711: Fix buffer alignment in iio_push_to_buffers_with_timestamp()

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[ Upstream commit afe2a789fbf7acd1a05407fc7839cc08d23825e3 ]

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: d3bf60450d ("iio: hx711: add triggered buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-3-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Cameron 2021-06-13 16:22:55 +01:00 committed by Greg Kroah-Hartman
parent 2abfdd6132
commit a6a1e347c7
1 changed files with 2 additions and 2 deletions
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4
drivers/iio/adc/hx711.c
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@ -86,9 +86,9 @@ struct hx711_data {
struct mutex lock;
/*
* triggered buffer
* 2x32-bit channel + 64-bit timestamp
* 2x32-bit channel + 64-bit naturally aligned timestamp
*/
u32 buffer[4];
u32 buffer[4] __aligned(8);
/*
* delay after a rising edge on SCK until the data is ready DOUT
* this is dependent on the hx711 where the datasheet tells a