diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/cell/cbe_cpufreq.c | 10 |
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 9a9932624c0..0b6e8ee85ab 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); |