From: Jonathan Cameron Jonathan.Cameron@huawei.com
commit 01fcf129f61b26d5b3d2d8afb03e770dee271bc8 upstream.
Fixes tag is where the max channels became 8, but timestamp space was missing before that.
Fixes: 851644a60d20 ("iio: adc: ad7923: Add support for the ad7908/ad7918/ad7928") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Cc: Daniel Junho djunho@gmail.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Link: https://lore.kernel.org/r/20210501165314.511954-3-jic23@kernel.org Cc: Stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/ad7923.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/iio/adc/ad7923.c +++ b/drivers/iio/adc/ad7923.c @@ -59,8 +59,10 @@ struct ad7923_state { /* * DMA (thus cache coherency maintenance) requires the * transfer buffers to live in their own cache lines. + * Ensure rx_buf can be directly used in iio_push_to_buffers_with_timetamp + * Length = 8 channels + 4 extra for 8 byte timestamp */ - __be16 rx_buf[4] ____cacheline_aligned; + __be16 rx_buf[12] ____cacheline_aligned; __be16 tx_buf[4]; };