From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Many years ago, IIO started using ____cacheline_aligned to ensure
that buffers that might be used for DMA were not sharing a cacheline
with other data that might lead to DMA safety issues.
As it turns out, that was fine at the time, but not based on the
correct alignment requirement (though I believe it was a conservative
choice at the time). Note that on many architectures this was introducing
unecessary padding. We should have been using ARCH_KMALLOC_MINALIGN
as other subsystems such as crypto have done for a long time.
Patch 1 discription contains more information but in short, there are
ARM64 SoCs out their that have a larger cachline size for caches beyond
L1. In many cases they maintain coherency for all DMA devices attached
and so this isn't a problem, but there are exceptions that do not.
So, this is a rather large patch set and just covers those drivers
that are in the last kernel release and in drivers/iio.
Many of these drivers are somewhat old so I haven't specifically
cc'd anyone so will be relying on those kind enough to sanity check
patches on drivers that are beyond their own.
Given there is ongoing discussion around reducing the alignment
requirements where possible, I've adopted the existing IIO_ALIGN
define througout. That way we have a single point to update if
that becomes relevant in future.
Cc: catalin.marinas@xxxxxxx
Jonathan Cameron (92):
iio: core: Fix IIO_ALIGN as it was not sufficiently large on some
platforms.
iio: accel: adxl313: Fix alignment for DMA safety
iio: accel: adxl355: Fix alignment for DMA safety
iio: accel: adxl367: Fix alignment for DMA safety
iio: accel: bma220: Fix alignment for DMA safety
iio: accel: bmi088: Fix alignment for DMA safety
iio: accel: sca3000: Fix alignment for DMA safety
iio: accel: sca3000: Fix alignment for DMA safety
iio: adc: ad7266: Fix alignment for DMA safety
iio: adc: ad7280a: Fix alignment for DMA safety
iio: adc: ad7292: Fix alignment for DMA safety
iio: adc: ad7298: Fix alignment for DMA safety
iio: adc: ad7476: Fix alignment for DMA safety
iio: adc: ad7606: Fix alignment for DMA safety
iio: adc: ad7766: Fix alignment for DMA safety
iio: adc: ad7768-1: Fix alignment for DMA safety
iio: adc: ad7887: Fix alignment for DMA safety
iio: adc: ad7923: Fix alignment for DMA safety
iio: adc: ad7949: Fix alignment for DMA safety
iio: adc: hi8435: Fix alignment for DMA safety
iio: adc: ltc2496: Fix alignment for DMA safety
iio: adc: ltc2497: Fix alignment for DMA safety
iio: adc: max1027: Fix alignment for DMA safety
iio: adc: max11100: Fix alignment for DMA safety
iio: adc: max1118: Fix alignment for DMA safety
iio: adc: max1241: Fix alignment for DMA safety
iio: adc: mcp320x: Fix alignment for DMA safety
iio: adc: ti-adc0832: Fix alignment for DMA safety
iio: adc: ti-adc084s021: Fix alignment for DMA safety
iio: adc: ti-adc108s102: Fix alignment for DMA safety
iio: adc: ti-adc12138: Fix alignment for DMA safety
iio: adc: ti-adc128s052: Fix alignment for DMA safety
iio: adc: ti-adc161s626: Fix alignment for DMA safety
iio: adc: ti-ads124s08: Fix alignment for DMA safety
iio: adc: ti-ads131e08: Fix alignment for DMA safety
iio: adc: ti-ads7950: Fix alignment for DMA safety
iio: adc: ti-ads8344: Fix alignment for DMA safety
iio: adc: ti-ads8688: Fix alignment for DMA safety
iio: adc: ti-tlc4541: Fix alignment for DMA safety
iio: addac: ad74413r: Fix alignment for DMA safety
iio: amplifiers: ad8366: Fix alignment for DMA safety
iio: common: ssp: Fix alignment for DMA safety
iio: dac: ad5064: Fix alignment for DMA safety
iio: dac: ad5360: Fix alignment for DMA safety
iio: dac: ad5421: Fix alignment for DMA safety
iio: dac: ad5449: Fix alignment for DMA safety
iio: dac: ad5504: Fix alignment for DMA safety
iio: dac: ad5592r: Fix alignment for DMA safety
iio: dac: ad5686: Fix alignment for DMA safety
iio: dac: ad5755: Fix alignment for DMA safety
iio: dac: ad5761: Fix alignment for DMA safety
iio: dac: ad5764: Fix alignment for DMA safety
iio: dac: ad5766: Fix alignment for DMA safety
iio: dac: ad5770r: Fix alignment for DMA safety
iio: dac: ad5791: Fix alignment for DMA saftey
iio: dac: ad7293: Fix alignment for DMA safety
iio: dac: ad7303: Fix alignment for DMA safety
iio: dac: ad8801: Fix alignment for DMA safety
iio: dac: ltc2688: Fix alignment for DMA safety
iio: dac: mcp3922: Fix alignment for DMA safety
iio: dac: ti-dac082s085: Fix alignment for DMA safety
iio: dac: ti-dac5571: Fix alignment for DMA safety
iio: dac: ti-dac7311: Fix alignment for DMA safety
iio: dac: ti-dac7612: Fix alignment for DMA safety
iio: frequency: ad9523: Fix alignment for DMA safety
iio: frequency: adf4350: Fix alignment for DMA safety
iio: frequency: adf4371: Fix alignment for DMA safety
iio: frequency: admv1013: Fix alignment for DMA safety
iio: frequency: admv1014: Fix alignment for DMA safety
iio: frequency: admv4420: Fix alignment for DMA safety
iio: frequency: adrf6780: Fix alignment for DMA safety
iio: gyro: adis16080: Fix alignment for DMA safety
iio: gyro: adis16130: Fix alignment for DMA safety
iio: gyro: adxrs450: Fix alignment for DMA safety
iio: gyro: fxas210002c: Fix alignment for DMA safety
iio: imu: fxos8700: Fix alignment for DMA safety
iio: imu_icm42600: Fix alignment for DMA safety
iio: imu: icm42600: Fix alignment for DMA safety in buffer code.
iio: imu: mpu6050: Fix alignment for DMA safety
iio: potentiometer: ad5110: Fix alignment for DMA safety
iio: potentiometer: ad5272: Fix alignment for DMA safety
iio: potentiometer: max5481: Fix alignment for DMA safety
iio: potentiometer: mcp41010: Fix alignment for DMA safety
iio: potentiometer: mcp4131: Fix alignment for DMA safety
iio: pressure: dlhl60d: Drop unnecessary alignment forcing.
iio: proximity: as3935: Fix alignment for DMA safety
iio: proximity: vcnl3020: Drop unnecessary alignment requirement for
i2c device
iio: resolver: ad2s1200: Fix alignment for DMA safety
iio: resolver: ad2s90: Fix alignment for DMA safety
iio: temp: ltc2983: Fix alignment for DMA safety
iio: temp: max31865: Fix alignment for DMA safety
iio: temp: maxim_thermocouple: Fix alignment for DMA safety
drivers/iio/accel/adxl313_core.c | 2 +-
drivers/iio/accel/adxl355_core.c | 2 +-
drivers/iio/accel/adxl367.c | 2 +-
drivers/iio/accel/adxl367_spi.c | 8 +++++---
drivers/iio/accel/bma220_spi.c | 2 +-
drivers/iio/accel/bmi088-accel-core.c | 2 +-
drivers/iio/accel/sca3000.c | 4 ++--
drivers/iio/accel/sca3300.c | 2 +-
drivers/iio/adc/ad7266.c | 6 +++---
drivers/iio/adc/ad7280a.c | 2 +-
drivers/iio/adc/ad7292.c | 2 +-
drivers/iio/adc/ad7298.c | 2 +-
drivers/iio/adc/ad7476.c | 5 ++---
drivers/iio/adc/ad7606.h | 6 +++---
drivers/iio/adc/ad7766.c | 5 ++---
drivers/iio/adc/ad7768-1.c | 4 ++--
drivers/iio/adc/ad7887.c | 5 ++---
drivers/iio/adc/ad7923.c | 4 ++--
drivers/iio/adc/ad7949.c | 2 +-
drivers/iio/adc/hi8435.c | 2 +-
drivers/iio/adc/ltc2496.c | 4 ++--
drivers/iio/adc/ltc2497.c | 4 ++--
drivers/iio/adc/max1027.c | 2 +-
drivers/iio/adc/max11100.c | 4 ++--
drivers/iio/adc/max1118.c | 2 +-
drivers/iio/adc/max1241.c | 2 +-
drivers/iio/adc/mcp320x.c | 2 +-
drivers/iio/adc/ti-adc0832.c | 2 +-
drivers/iio/adc/ti-adc084s021.c | 4 ++--
drivers/iio/adc/ti-adc108s102.c | 4 ++--
drivers/iio/adc/ti-adc12138.c | 2 +-
drivers/iio/adc/ti-adc128s052.c | 2 +-
drivers/iio/adc/ti-adc161s626.c | 2 +-
drivers/iio/adc/ti-ads124s08.c | 2 +-
drivers/iio/adc/ti-ads131e08.c | 2 +-
drivers/iio/adc/ti-ads7950.c | 4 ++--
drivers/iio/adc/ti-ads8344.c | 2 +-
drivers/iio/adc/ti-ads8688.c | 2 +-
drivers/iio/adc/ti-tlc4541.c | 4 ++--
drivers/iio/addac/ad74413r.c | 4 ++--
drivers/iio/amplifiers/ad8366.c | 4 ++--
drivers/iio/common/ssp_sensors/ssp.h | 3 +--
drivers/iio/dac/ad5064.c | 4 ++--
drivers/iio/dac/ad5360.c | 4 ++--
drivers/iio/dac/ad5421.c | 4 ++--
drivers/iio/dac/ad5449.c | 4 ++--
drivers/iio/dac/ad5504.c | 2 +-
drivers/iio/dac/ad5592r-base.h | 4 +++-
drivers/iio/dac/ad5686.h | 6 ++++--
drivers/iio/dac/ad5755.c | 4 ++--
drivers/iio/dac/ad5761.c | 4 ++--
drivers/iio/dac/ad5764.c | 4 ++--
drivers/iio/dac/ad5766.c | 2 +-
drivers/iio/dac/ad5770r.c | 2 +-
drivers/iio/dac/ad5791.c | 2 +-
drivers/iio/dac/ad7293.c | 2 +-
drivers/iio/dac/ad7303.c | 4 ++--
drivers/iio/dac/ad8801.c | 2 +-
drivers/iio/dac/ltc2688.c | 4 ++--
drivers/iio/dac/mcp4922.c | 2 +-
drivers/iio/dac/ti-dac082s085.c | 2 +-
drivers/iio/dac/ti-dac5571.c | 2 +-
drivers/iio/dac/ti-dac7311.c | 2 +-
drivers/iio/dac/ti-dac7612.c | 4 ++--
drivers/iio/frequency/ad9523.c | 6 +++---
drivers/iio/frequency/adf4350.c | 6 +++---
drivers/iio/frequency/adf4371.c | 2 +-
drivers/iio/frequency/admv1013.c | 2 +-
drivers/iio/frequency/admv1014.c | 2 +-
drivers/iio/frequency/admv4420.c | 2 +-
drivers/iio/frequency/adrf6780.c | 2 +-
drivers/iio/gyro/adis16080.c | 2 +-
drivers/iio/gyro/adis16130.c | 2 +-
drivers/iio/gyro/adxrs450.c | 2 +-
drivers/iio/gyro/fxas21002c_core.c | 6 +++---
drivers/iio/imu/fxos8700_core.c | 2 +-
drivers/iio/imu/inv_icm42600/inv_icm42600.h | 2 +-
drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h | 2 +-
drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 2 +-
drivers/iio/potentiometer/ad5110.c | 6 +++---
drivers/iio/potentiometer/ad5272.c | 2 +-
drivers/iio/potentiometer/max5481.c | 2 +-
drivers/iio/potentiometer/mcp41010.c | 2 +-
drivers/iio/potentiometer/mcp4131.c | 2 +-
drivers/iio/pressure/dlhl60d.c | 2 +-
drivers/iio/proximity/as3935.c | 2 +-
drivers/iio/proximity/vcnl3020.c | 4 ++--
drivers/iio/resolver/ad2s1200.c | 2 +-
drivers/iio/resolver/ad2s90.c | 2 +-
drivers/iio/temperature/ltc2983.c | 6 +++---
drivers/iio/temperature/max31865.c | 2 +-
drivers/iio/temperature/maxim_thermocouple.c | 2 +-
include/linux/iio/iio.h | 10 ++++++++--
93 files changed, 149 insertions(+), 141 deletions(-)
--
2.36.0
