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Blackfin: make sure mmiowb inserts a write barrier with SSYNC
authorMichael Hennerich <michael.hennerich@analog.com>
Fri, 18 Jun 2010 08:30:08 +0000 (08:30 +0000)
committerMike Frysinger <vapier@gentoo.org>
Fri, 6 Aug 2010 16:55:51 +0000 (12:55 -0400)
commiteb9649095f4e81a6535c10377da3d5f48b9ad822
tree9f95ef1ccaa4551d7a3794631562d1a4e6254682tree | snapshot (tar.gz zip)
parentd1401e1dc22606a91f577ad3dfd68ae7e60e0357commit | diff
Blackfin: make sure mmiowb inserts a write barrier with SSYNC

Add SSYNC to our implementation of I/O write barrier to ensure ordering
of I/O space writes.  This will make sure that writes following the
barrier will arrive after all previous writes.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
arch/blackfin/include/asm/io.h diff | blob | blame | history