github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 23:22:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

iio: adc: ti-ads131e08: 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: d935eddd27 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Tomislav Denis <tomislav.denis@avl.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-36-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2022-05-08 18:56:15 +01:00
parent 7df19bd26c
commit 55afdd050c
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/adc/ti-ads131e08.c
View File

@ -105,7 +105,7 @@ struct ads131e08_state {
s64 ts __aligned(8);
} tmp_buf;
u8 tx_buf[3] ____cacheline_aligned;
u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN);
/*
* Add extra one padding byte to be able to access the last channel
* value using u32 pointer