summaryrefslogtreecommitdiffstats
path: root/drivers/iio/dac
diff options
context:
space:
mode:
authorJonathan Cameron <Jonathan.Cameron@huawei.com>2022-05-08 18:56:41 +0100
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2022-06-14 11:53:17 +0100
commit03a0cc77f164e4e59b970d50c6e9a6caf06dae80 (patch)
tree98a84e747f09f5e52c242e937b91b0eccc071875 /drivers/iio/dac
parente66bf04797f1f95a2402414c00e64d00f63d31ec (diff)
downloadlinux-03a0cc77f164e4e59b970d50c6e9a6caf06dae80.tar.bz2
iio: dac: ti-dac082s085: 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: 61011264c1af ("iio: dac: Add Texas Instruments 8/10/12-bit 2/4-channel DAC driver") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Nuno Sá <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20220508175712.647246-62-jic23@kernel.org
Diffstat (limited to 'drivers/iio/dac')
-rw-r--r--drivers/iio/dac/ti-dac082s085.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c
index 106ce3546419..8e1590e3cc8b 100644
--- a/drivers/iio/dac/ti-dac082s085.c
+++ b/drivers/iio/dac/ti-dac082s085.c
@@ -55,7 +55,7 @@ struct ti_dac_chip {
bool powerdown;
u8 powerdown_mode;
u8 resolution;
- u8 buf[2] ____cacheline_aligned;
+ u8 buf[2] __aligned(IIO_DMA_MINALIGN);
};
#define WRITE_NOT_UPDATE(chan) (0x00 | (chan) << 6)