From: Jonathan Cameron Date: Sat, 1 May 2021 16:53:14 +0000 (+0100) Subject: iio: adc: ad7923: Fix undersized rx buffer. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=01fcf129f61b26d5b3d2d8afb03e770dee271bc8;p=linux.git iio: adc: ad7923: Fix undersized rx buffer. 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 Cc: Daniel Junho Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210501165314.511954-3-jic23@kernel.org Cc: --- diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c index 9a649745cd0a8..069b561ee7689 100644 --- 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]; };