Blackfin: fix data cache flushing when doing icache flushing

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Make sure we flush all data caches and their write buffers before flushing
icache, otherwise random edge cases could crop up where stale data is read
into icache from external memory.  As fallout, punt the combined icache +
dcache flush function since we cannot safely do them back to back -- the
SSYNC is needed between the dcache flush and the icache flush.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

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This commit is contained in:

Mike Frysinger 2009-04-10 20:52:08 +00:00

parent f82e0a0c67

commit 5d89137a17

3 changed files with 16 additions and 36 deletions

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35

arch/blackfin/include/asm/cacheflush.h

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1

arch/blackfin/kernel/bfin_ksyms.c

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16

arch/blackfin/mach-common/cache.S

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