cpufreq/intel_pstate: Load only on Intel hardware

This driver is Intel-only so loading on anything which is not Intel is
pointless. Prevent it from doing so.

While at it, correct the "not supported" print statement to say CPU
"model" which is what that test does.

Fixes: d32b64acda2c (cpufreq: intel_pstate: Add reasons for failure and debug messages)
Suggested-by: Erwan Velu <e.velu@criteo.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index b599c7318aab4ea9302779b8527ece4a91151914..2986119dd31fb8391e3256a88942272870acad44 100644 (file)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2596,6 +2596,9 @@ static int __init intel_pstate_init(void)
        const struct x86_cpu_id *id;
        int rc;
 
+       if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
+               return -ENODEV;
+
        if (no_load)
                return -ENODEV;
 
@@ -2611,7 +2614,7 @@ static int __init intel_pstate_init(void)
        } else {
                id = x86_match_cpu(intel_pstate_cpu_ids);
                if (!id) {
-                       pr_info("CPU ID not supported\n");
+                       pr_info("CPU model not supported\n");
                        return -ENODEV;
                }