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 <santosh@fossix.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index 40dae96..c6448c7 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