From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit 10897f34309b3c7bc14698407436c82d11c07f47 ]
____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: 1f25ca11d84a ("iio: temperature: add support for Maxim thermocouple chips") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Cc: Matt Ranostay mranostay@gmail.com Acked-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20220508175712.647246-93-jic23@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/temperature/maxim_thermocouple.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index 98c41cddc6f0..c28a7a6dea5f 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -122,7 +122,7 @@ struct maxim_thermocouple_data { struct spi_device *spi; const struct maxim_thermocouple_chip *chip;
- u8 buffer[16] ____cacheline_aligned; + u8 buffer[16] __aligned(IIO_DMA_MINALIGN); char tc_type; };