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iio: adc: ad7923: Fix undersized rx buffer.

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Fixes tag is where the max channels became 8, but timestamp space was missing
before that.

Fixes: 851644a60d ("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>
This commit is contained in:
Jonathan Cameron 2021-05-01 17:53:14 +01:00
parent a1caeebab0
commit 01fcf129f6
1 changed files with 3 additions and 1 deletions
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4
drivers/iio/adc/ad7923.c
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@ -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];
};