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ARM926EJS: Make asm routines volatile in cache ops 

We certainly don't want the compiler to reorganise the code for dcache flushing.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2012-04-06 03:25:06 +00:00 committed by Albert ARIBAUD
parent 2f002eceae
commit c6201553ba
1 changed files with 1 additions and 1 deletions
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2
arch/arm/cpu/arm926ejs/cache.c
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@ -82,7 +82,7 @@ void flush_dcache_range(unsigned long start, unsigned long stop)
start += CONFIG_SYS_CACHELINE_SIZE;
}
asm("mcr p15, 0, %0, c7, c10, 4\n"::"r"(0));
asm volatile("mcr p15, 0, %0, c7, c10, 4\n"::"r"(0));
}
void flush_cache(unsigned long start, unsigned long size)