GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-03-17 12:44:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

iio: temp: maxim_thermocouple: Fix alignment for DMA safety

Browse source 
____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: 1f25ca11d8 ("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
This commit is contained in:
Jonathan Cameron 2022-05-08 18:57:12 +01:00
parent ecdef5b831
commit 10897f3430
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/iio/temperature/maxim_thermocouple.c
View file

@ -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;
};