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-rw-r--r--arch/powerpc/kernel/power4-pmu.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/power4-pmu.c b/arch/powerpc/kernel/power4-pmu.c
index db90b0c5c27..3c90a3d9173 100644
--- a/arch/powerpc/kernel/power4-pmu.c
+++ b/arch/powerpc/kernel/power4-pmu.c
@@ -606,7 +606,8 @@ static struct power_pmu power4_pmu = {
static int init_power4_pmu(void)
{
- if (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power4"))
+ if (!cur_cpu_spec->oprofile_cpu_type ||
+ strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power4"))
return -ENODEV;
return register_power_pmu(&power4_pmu);