From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jisheng.Zhang@synaptics.com (Jisheng Zhang) Date: Mon, 7 May 2018 15:42:15 +0800 Subject: [PATCH] arm: oxnas: remove non-necessary flush_cache_all() Message-ID: <20180507154215.45a9348f@xhacker.debian> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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