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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-05-08 19:56:15 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 12:53:14 +0200 |
| commit | 55afdd050c063ae4b8dbd566107a030c00d005fd (patch) | |
| tree | afb54b2c5c3732a196135433d66a331736e589b1 /drivers/iio/adc | |
| parent | iio: adc: ti-ads124s08: Fix alignment for DMA safety (diff) | |
| download | linux-55afdd050c063ae4b8dbd566107a030c00d005fd.tar.xz linux-55afdd050c063ae4b8dbd566107a030c00d005fd.zip | |
iio: adc: ti-ads131e08: Fix alignment for DMA safety
____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
Diffstat (limited to '')
| -rw-r--r-- | drivers/iio/adc/ti-ads131e08.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c index 0c2025a22575..0dd9a50a9138 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 |