summaryrefslogtreecommitdiffstats
path: root/drivers/cpufreq/speedstep-smi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/cpufreq/speedstep-smi.c')
-rw-r--r--drivers/cpufreq/speedstep-smi.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c
index c76ead3490bf..6a457fcaaad5 100644
--- a/drivers/cpufreq/speedstep-smi.c
+++ b/drivers/cpufreq/speedstep-smi.c
@@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <asm/ist.h>
+#include <asm/cpu_device_id.h>
#include "speedstep-lib.h"
@@ -379,6 +380,17 @@ static struct cpufreq_driver speedstep_driver = {
.attr = speedstep_attr,
};
+static const struct x86_cpu_id ss_smi_ids[] = {
+ { X86_VENDOR_INTEL, 6, 0xb, },
+ { X86_VENDOR_INTEL, 6, 0x8, },
+ { X86_VENDOR_INTEL, 15, 2 },
+ {}
+};
+#if 0
+/* Not auto loaded currently */
+MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids);
+#endif
+
/**
* speedstep_init - initializes the SpeedStep CPUFreq driver
*
@@ -388,6 +400,9 @@ static struct cpufreq_driver speedstep_driver = {
*/
static int __init speedstep_init(void)
{
+ if (!x86_match_cpu(ss_smi_ids))
+ return -ENODEV;
+
speedstep_processor = speedstep_detect_processor();
switch (speedstep_processor) {