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sh: Don't perform an icbi on a P2 address 

The legacy P2 area may not always be mapped (for example when using
PMB). So perform an icbi on an address that we know will always be
mapped.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Matt Fleming 2010-01-13 12:59:24 +09:00 committed by Paul Mundt
parent 94cd049522
commit 6430a5987f
1 changed files with 1 additions and 1 deletions
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2
arch/sh/include/asm/system.h
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@ -32,7 +32,7 @@
#define mb() __asm__ __volatile__ ("synco": : :"memory")
#define rmb() mb()
#define wmb() __asm__ __volatile__ ("synco": : :"memory")
#define ctrl_barrier() __icbi(0xa8000000)
#define ctrl_barrier() __icbi(PAGE_OFFSET)
#define read_barrier_depends() do { } while(0)
#else
#define mb() __asm__ __volatile__ ("": : :"memory")