author: Len Brown <len.brown@intel.com> 2017-11-09 02:19:39 -0500
committer: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2017-11-09 14:13:21 +0100
commit: a4c447533a18ee86e07232d6344ba12b1f9c5077
parent: 3fc74bd8a723c91a5b4627079c511fcaf3c75017
Commit Summary:
Diffstat:
1 file changed, 6 insertions, 1 deletion
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 5db5e3176f6a..9c93abdf635f 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1066,7 +1066,7 @@ static const struct idle_cpu idle_cpu_dnv = {
};
#define ICPU(model, cpu) \
- { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
+ { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&cpu }
static const struct x86_cpu_id intel_idle_ids[] __initconst = {
ICPU(INTEL_FAM6_NEHALEM_EP, idle_cpu_nehalem),
@@ -1130,6 +1130,11 @@ static int __init intel_idle_probe(void)
return -ENODEV;
}
+ if (!boot_cpu_has(X86_FEATURE_MWAIT)) {
+ pr_debug("Please enable MWAIT in BIOS SETUP\n");
+ return -ENODEV;
+ }
+
if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
return -ENODEV;