Linus Torvalds 92e6edd685 regmap: mmio: Revert to v4.4 endianness handling ... Commit 29bb45f25f (regmap-mmio: Use native endianness for read/write) attempted to fix some long standing bugs in the MMIO implementation for big endian systems caused by duplicate byte swapping in both regmap and readl()/writel() which affected MIPS systems as when they are in big endian mode they flip the endianness of all registers in the system, not just the CPU. MIPS systems had worked around this by declaring regmap using IPs as little endian which is inaccurate, unfortunately the issue had not been reported. Sadly the fix makes things worse rather than better. By changing the behaviour to match the documentation it caused behaviour changes for other IPs which broke them and by using the __raw I/O accessors to avoid the endianness swapping in readl()/writel() it removed some memory ordering guarantees and could potentially generate unvirtualisable instructions on some architectures. Unfortunately sorting out all this mess in any half way sensible fashion was far too invasive to go in during an -rc cycle so instead let's go back to the old broken behaviour for v4.5, the better fixes are already queued for v4.6. This does mean that we keep the broken MIPS DTs for another release but that seems the least bad way of handling the situation. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWtIjbAAoJECTWi3JdVIfQs8QH/jNpfio4klDkdlH/KpPZXlrp FzASbGePNtLqZXFL5WcG//ni3EYdbaiXZIdLBKDx9K4F2ca9FAF8aAnZAZ5uefGx bnloYpV34DqQwS5f9FrrNsm+YVTTuUIt0dx4ZRGCEdMTzW7i3efs/9eVEITUixK6 U1obTJovAl33bihadsC9hzJVwfOq3H4aFFWc/EFZzbQaU2/so2eiA1dhPr/YErRJ dMR8drWxpYXuBsrk5T647R0sUw7pA4Zw+WAF032TPQf/1Fy9Vk1/yXbTyccZzFzo bfupRA/HpeLNZ9cN9z9y3Fa0je4UNbBZh0poB5B773af84NnhX7Ytenjo+peVxI= =+Q6E -----END PGP SIGNATURE----- Merge tag 'regmap-fix-v4.5-big-endian' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "A single revert back to v4.4 endianness handling. Commit 29bb45f25f ("regmap-mmio: Use native endianness for read/write") attempted to fix some long standing bugs in the MMIO implementation for big endian systems caused by duplicate byte swapping in both regmap and readl()/writel(). Sadly the fix makes things worse rather than better, so revert it for now" * tag 'regmap-fix-v4.5-big-endian' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: mmio: Revert to v4.4 endianness handling		2016-02-08 10:20:06 -08:00
..
power	Merge branches 'pm-core' and 'pm-domains'	2016-02-06 00:34:01 +01:00
regmap	regmap: mmio: Revert to v4.4 endianness handling	2016-02-05 11:22:04 +00:00
attribute_container.c
base.h	PM / sleep: prohibit devices probing during suspend/hibernation	2015-11-30 14:47:22 +01:00
bus.c
cacheinfo.c
class.c
component.c	component: add support for releasing match data	2015-12-07 00:02:05 +00:00
container.c
core.c	driver core: Do not overwrite secondary fwnode with NULL if it is set	2015-12-07 02:29:23 +01:00
cpu.c	drivers/base/cpu.c: use __cpu_*_mask directly	2016-01-20 17:09:18 -08:00
dd.c	driver core: Avoid NULL pointer dereferences in device_is_bound()	2016-01-12 01:51:44 +01:00
devcoredump.c
devres.c
devtmpfs.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
dma-coherent.c
dma-contiguous.c
dma-mapping.c	dma-mapping: remove <asm-generic/dma-coherent.h>	2016-01-20 17:09:18 -08:00
driver.c
firmware.c
firmware_class.c	firmware: actually return NULL on failed request_firmware_nowait()	2016-01-07 13:45:34 -07:00
hypervisor.c
init.c
isa.c
Kconfig
Makefile
map.c
memory.c	mm: skip memory block registration for ZONE_DEVICE	2016-01-15 17:56:32 -08:00
module.c
node.c
pinctrl.c
platform-msi.c	base: Export platform_msi_domain_[alloc,free]_irqs	2016-01-26 16:33:25 +01:00
platform.c	base/platform: Fix platform drivers with no probe callback	2016-01-26 08:47:25 -08:00
property.c	device property: avoid allocations of 0 length	2016-01-01 02:09:51 +01:00
soc.c
syscore.c
topology.c
transport_class.c