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arm64: secondary_start_kernel: Remove unnecessary barrier

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Remove the unnecessary smp_wmb(), which was added to make sure
that the update_cpu_boot_status() completes before we mark the
CPU online. But update_cpu_boot_status() already has dsb() (required
for the failing CPUs) to ensure the correct behavior.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Dennis Chen <dennis.chen@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Suzuki K Poulose 2016-05-10 11:14:41 +01:00 committed by Will Deacon
parent 5bb1cc0ff9
commit 99aa036241
1 changed files with 0 additions and 2 deletions
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arch/arm64/kernel/smp.c
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@ -264,8 +264,6 @@ asmlinkage void secondary_start_kernel(void)
pr_info("CPU%u: Booted secondary processor [%08x]\n",
cpu, read_cpuid_id());
update_cpu_boot_status(CPU_BOOT_SUCCESS);
/* Make sure the status update is visible before we complete */
smp_wmb();
set_cpu_online(cpu, true);
complete(&cpu_running);