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authorJonathan Cameron <Jonathan.Cameron@huawei.com>2022-05-08 20:56:57 +0300
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2022-06-14 13:53:18 +0300
commit848847702bd10bf0bf547e38adc44c14e9742784 (patch)
tree4875532afadb3923a0288f0819cf55b00ccddb71 /drivers/iio/imu
parentc9a8417a13ed9c81383662fca8a4b89f84d31e78 (diff)
downloadlinux-848847702bd10bf0bf547e38adc44c14e9742784.tar.xz
iio: imu: inv_icm42600: Fix alignment for DMA safety
Partial fix for this driver as a second instance was introduced in a later patch. ____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: a095fadb443b ("iio: imu: inv_icm42600: add gyroscope IIO device") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> Acked-by: Nuno Sá <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20220508175712.647246-78-jic23@kernel.org
Diffstat (limited to 'drivers/iio/imu')
-rw-r--r--drivers/iio/imu/inv_icm42600/inv_icm42600.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
index c0f5059b13b3..62fedac54e65 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600.h
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
@@ -140,7 +140,7 @@ struct inv_icm42600_state {
struct inv_icm42600_suspended suspended;
struct iio_dev *indio_gyro;
struct iio_dev *indio_accel;
- uint8_t buffer[2] ____cacheline_aligned;
+ uint8_t buffer[2] __aligned(IIO_DMA_MINALIGN);
struct inv_icm42600_fifo fifo;
struct {
int64_t gyro;