From: Jonathan Cameron Date: Sun, 8 May 2022 17:56:57 +0000 (+0100) Subject: iio: imu: inv_icm42600: Fix alignment for DMA safety X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=848847702bd10bf0bf547e38adc44c14e9742784;p=linux.git 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 Acked-by: Jean-Baptiste Maneyrol Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-78-jic23@kernel.org --- diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h index c0f5059b13b31..62fedac54e658 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;