From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit 8f884758966259fa8c50c137ac6d4ce9bb7859db ]
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: 5e1a1da0f8c9 ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/adc/at91-sama5d2_adc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index b917a4714a9c..b8139c435a4b 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -403,7 +403,8 @@ struct at91_adc_state { struct at91_adc_dma dma_st; struct at91_adc_touch touch_st; struct iio_dev *indio_dev; - u16 buffer[AT91_BUFFER_MAX_HWORDS]; + /* Ensure naturally aligned timestamp */ + u16 buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8); /* * lock to prevent concurrent 'single conversion' requests through * sysfs.