From 76d98ab4628bf8d36498e8228a5b92aa95a4b820 Mon Sep 17 00:00:00 2001 From: Santosh Sivaraj Date: Tue, 4 Jul 2017 09:52:46 +0530 Subject: [PATCH] powerpc/powernv: Get cpu only after validity check Check for validity of cpu before calling get_hard_smp_processor_id(). Found with coverity. Signed-off-by: Santosh Sivaraj Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/smp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index 40dae96f7e20..c6448c7aabe7 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -57,7 +57,7 @@ static void pnv_smp_setup_cpu(int cpu) static int pnv_smp_kick_cpu(int nr) { - unsigned int pcpu = get_hard_smp_processor_id(nr); + unsigned int pcpu; unsigned long start_here = __pa(ppc_function_entry(generic_secondary_smp_init)); long rc; @@ -66,6 +66,7 @@ static int pnv_smp_kick_cpu(int nr) if (nr < 0 || nr >= nr_cpu_ids) return -EINVAL; + pcpu = get_hard_smp_processor_id(nr); /* * If we already started or OPAL is not supported, we just * kick the CPU via the PACA -- 2.30.2