[PATCH v2 0/3] ARC: IO: rework IO accessors

[Eugeniy Paltsev]

Fixing of DW SPI which was broken by
commit 07906b3dad15 ("ARC: Switch to generic accessors")
lead me to several fixes in ARC IO accessors code.

Eugeniy Paltsev (3):
  ARC: IO: add volatile to accessors
  ARC: IO: add compiler barriers to IO accessors
  ARC: IO: add MB for __raw_* memory accessors

 arch/arc/include/asm/io.h | 93 +++++++++++++++++++++++++--------------
 1 file changed, 60 insertions(+), 33 deletions(-)

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2.21.1