arm: berlin: remove non-necessary flush_cache_all()
authorJisheng Zhang <Jisheng.Zhang@synaptics.com>
Mon, 7 May 2018 07:28:06 +0000 (15:28 +0800)
committerJisheng Zhang <Jisheng.Zhang@synaptics.com>
Thu, 24 May 2018 06:49:09 +0000 (14:49 +0800)
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 here
flush_cache_all() is a duplication, remove it.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
arch/arm/mach-berlin/platsmp.c

index 7586b7aec272c0c5b3786d166d026c4f96af4afd..a8ae4a566d99b2f6cfa235aec276159691d1e318 100644 (file)
@@ -81,7 +81,6 @@ static void __init berlin_smp_prepare_cpus(unsigned int max_cpus)
                goto unmap_scu;
 
        scu_enable(scu_base);
-       flush_cache_all();
 
        /*
         * Write the first instruction the CPU will execute after being reset