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f778cc6571
linux/arch/arc
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Lada Trimasova f778cc6571 ARC: [BE] readl()/writel() to work in Big Endian CPU configuration 
read{l,w}() write{l,w}() primitives should use le{16,32}_to_cpu() and
cpu_to_le{16,32}() respectively to ensure device registers are read
correctly in Big Endian CPU configuration.

Per Arnd Bergmann
| Most drivers using readl() or readl_relaxed() expect those to perform byte
| swaps on big-endian architectures, as the registers tend to be fixed endian

This was needed for getting UART to work correctly on a Big Endian ARC.

The ARC accessors originally were fine, and the bug got introduced
inadventently by commit b8a0330239 ("ARCv2: barriers")

Fixes: b8a0330239 ("ARCv2: barriers")
Link: http://lkml.kernel.org/r/201603100845.30602.arnd@arndb.de
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: stable@vger.kernel.org  [4.2+]
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lada Trimasova <ltrimas@synopsys.com>
[vgupta: beefed up changelog, added Fixes/stable tags]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-03-12 09:46:45 +05:30
..
boot ARC: [plat-sim] unbork non default CONFIG_LINUX_LINK_BASE 2015-12-17 11:06:43 +05:30
configs ARC: [*defconfig] No need to specify CONFIG_CROSS_COMPILE 2016-03-11 14:59:55 +05:30
include ARC: [BE] readl()/writel() to work in Big Endian CPU configuration 2016-03-12 09:46:45 +05:30
kernel ARC: Fix misspellings in comments. 2016-03-11 14:59:53 +05:30
lib ARCv2: lib: memcpy: use local symbols 2015-11-03 17:33:00 +05:30
mm ARC: Fix misspellings in comments. 2016-03-11 14:59:53 +05:30
oprofile ARC: OProfile support 2013-02-15 23:16:00 +05:30
plat-axs10x ARCv2: smp: [plat-*]: No need to explicitly call mcip_init_smp() 2015-10-28 16:13:41 +05:30
plat-sim ARC: remove extraneous header include 2015-11-14 13:11:38 +05:30
plat-tb10x ARC: [plat*] move code out of .init_machine into common 2014-10-13 14:46:13 +05:30
Kbuild
Kconfig ARC: SMP: No need for CONFIG_ARC_IPI_DBG 2016-02-24 11:07:32 +05:30
Kconfig.debug ARC: With earlycon in use, retire EARLY_PRINTK 2015-05-11 11:20:21 +05:30
Makefile ARC: [BE] Select correct CROSS_COMPILE prefix 2016-03-11 14:59:54 +05:30