From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit 58e22371539e01c742be5c30295f591a6a17e348 ]
____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: df38a4a72a3b ("iio: dac: add TI DAC5571 family support") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Cc: Sean Nyekjaer sean.nyekjaer@prevas.dk Acked-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20220508175712.647246-63-jic23@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/dac/ti-dac5571.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c index 0b775f943db3..ba68ea1e3455 100644 --- a/drivers/iio/dac/ti-dac5571.c +++ b/drivers/iio/dac/ti-dac5571.c @@ -52,7 +52,7 @@ struct dac5571_data { struct dac5571_spec const *spec; int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val); int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn); - u8 buf[3] ____cacheline_aligned; + u8 buf[3] __aligned(IIO_DMA_MINALIGN); };
#define DAC5571_POWERDOWN(mode) ((mode) + 1)