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    Subject[PATCH 5.19 0664/1157] iio: adc: ti-ads131e08: Fix alignment for DMA safety
    Date
    From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

    [ Upstream commit 55afdd050c063ae4b8dbd566107a030c00d005fd ]

    ____cacheline_aligned is an insufficient guarantee for non-coherent DMA
    on platforms with 128 byte cachelines above L1. Switch to the updated
    IIO_DMA_MINALIGN definition.

    Fixes: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family")
    Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
    Cc: Tomislav Denis <tomislav.denis@avl.com>
    Acked-by: Nuno Sá <nuno.sa@analog.com>
    Link: https://lore.kernel.org/r/20220508175712.647246-36-jic23@kernel.org
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/iio/adc/ti-ads131e08.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
    index 80a09817c119..32237cacc9a3 100644
    --- a/drivers/iio/adc/ti-ads131e08.c
    +++ b/drivers/iio/adc/ti-ads131e08.c
    @@ -105,7 +105,7 @@ struct ads131e08_state {
    s64 ts __aligned(8);
    } tmp_buf;

    - u8 tx_buf[3] ____cacheline_aligned;
    + u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN);
    /*
    * Add extra one padding byte to be able to access the last channel
    * value using u32 pointer
    --
    2.35.1


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