Vineet Gupta e5bc0478ab ARC: Add missing io barriers to io{read,write}{16,32}be() ... While reviewing a different change to asm-generic/io.h Arnd spotted that ARC ioread32 and ioread32be both of which come from asm-generic versions are not symmetrical in terms of calling the io barriers. generic ioread32 -> ARC readl() [ has barriers] generic ioread32be -> __be32_to_cpu(__raw_readl()) [ lacks barriers] While generic ioread32be is being remediated to call readl(), that involves a swab32(), causing double swaps on ioread32be() on Big Endian systems. So provide our versions of big endian IO accessors to ensure io barrier calls while also keeping them optimal Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: stable@vger.kernel.org [4.2+] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>		2016-05-05 16:35:28 +05:30
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asm	ARC: Add missing io barriers to io{read,write}{16,32}be()	2016-05-05 16:35:28 +05:30
uapi/asm	ARC: mm: use generic macros _BITUL()/_AC()	2015-10-28 19:31:05 +05:30