From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit ecdef5b8317cdf18acb46223e087f04a226fa619 ]
____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: e112dc4e18ea ("iio: temperature: Add MAX31865 RTD Support") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Cc: Navin Sankar Velliangiri navin@linumiz.com Acked-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20220508175712.647246-92-jic23@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/temperature/max31865.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/temperature/max31865.c b/drivers/iio/temperature/max31865.c index 86c3f3509a26..f0079e51d8d2 100644 --- a/drivers/iio/temperature/max31865.c +++ b/drivers/iio/temperature/max31865.c @@ -53,7 +53,7 @@ struct max31865_data { struct mutex lock; bool filter_50hz; bool three_wire; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); };
static int max31865_read(struct max31865_data *data, u8 reg,