1 files changed, 10 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/cbe_cpufreq.c b/arch/powerpc/platforms/cell/cbe_cpufreq.c
index 9a9932624c0c..0b6e8ee85ab1 100644
--- a/arch/powerpc/platforms/cell/cbe_cpufreq.c
+++ b/arch/powerpc/platforms/cell/cbe_cpufreq.c
@@ -24,6 +24,7 @@
 #include <asm/machdep.h>
 #include <asm/of_platform.h>
 #include <asm/prom.h>
+#include "cbe_regs.h"
 #include "cbe_cpufreq.h"
 
 static DEFINE_MUTEX(cbe_switch_mutex);
@@ -78,6 +79,15 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
         pr_debug("init cpufreq on CPU %d\n", policy->cpu);
 
+        /*
+         * Let's check we can actually get to the CELL regs
+         */
+        if (!cbe_get_cpu_pmd_regs(policy->cpu) ||
+            !cbe_get_cpu_mic_tm_regs(policy->cpu)) {
+                pr_info("invalid CBE regs pointers for cpufreq\n");
+                return -EINVAL;
+        }
+
         max_freqp = of_get_property(cpu, "clock-frequency", NULL);
 
         of_node_put(cpu);