I believe the flush_cache_all() after scu_enable() is to "Ensure that the data accessed by CPU0 before the SCU was initialised is visible to the other CPUs." as commented in scu_enable(). So flush_cache_all() here is a duplication of the one in scu_enable(), remove it.
Signed-off-by: Jisheng Zhang <[email protected]> --- arch/arm/mach-oxnas/platsmp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/mach-oxnas/platsmp.c b/arch/arm/mach-oxnas/platsmp.c index 442cc8a2f7dc..1a8e1e9fc222 100644 --- a/arch/arm/mach-oxnas/platsmp.c +++ b/arch/arm/mach-oxnas/platsmp.c @@ -85,7 +85,6 @@ static void __init ox820_smp_prepare_cpus(unsigned int max_cpus) goto unmap_scu; scu_enable(scu_base); - flush_cache_all(); unmap_scu: iounmap(scu_base); -- 2.17.0
