Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix stale cpufreq_cpu_governor pointer
  [CPUFREQ] Resolve time unit thinko in ondemand/conservative govs
  [CPUFREQ] speedstep-ich: fix error caused by 394122ab144dae4b276d74644a2f11c44a60ac5c
  [CPUFREQ] Fix use after free on governor restore
  [CPUFREQ] acpi-cpufreq: blacklist Intel 0f68: Fix HT detection and put in notification message
  [CPUFREQ] powernow-k8: Fix test in get_transition_latency()
  [CPUFREQ] longhaul: select Longhaul version 2 for capable CPUs

4 files changed, 26 insertions, 20 deletions

diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 7d5c3b0..8b581d3 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -526,15 +526,21 @@ static const struct dmi_system_id sw_any_bug_dmi_table[] = {
 
 static int acpi_cpufreq_blacklist(struct cpuinfo_x86 *c)
 {
-	/* http://www.intel.com/Assets/PDF/specupdate/314554.pdf
+	/* Intel Xeon Processor 7100 Series Specification Update
+	 * http://www.intel.com/Assets/PDF/specupdate/314554.pdf
 	 * AL30: A Machine Check Exception (MCE) Occurring during an
 	 * Enhanced Intel SpeedStep Technology Ratio Change May Cause
-	 * Both Processor Cores to Lock Up when HT is enabled*/
+	 * Both Processor Cores to Lock Up. */
 	if (c->x86_vendor == X86_VENDOR_INTEL) {
 		if ((c->x86 == 15) &&
 		    (c->x86_model == 6) &&
-		    (c->x86_mask == 8) && smt_capable())
+		    (c->x86_mask == 8)) {
+			printk(KERN_INFO "acpi-cpufreq: Intel(R) "
+			    "Xeon(R) 7100 Errata AL30, processors may "
+			    "lock up on frequency changes: disabling "
+			    "acpi-cpufreq.\n");
 			return -ENODEV;
+		    }
 		}
 	return 0;
 }
@@ -549,13 +555,18 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	unsigned int result = 0;
 	struct cpuinfo_x86 *c = &cpu_data(policy->cpu);
 	struct acpi_processor_performance *perf;
+#ifdef CONFIG_SMP
+	static int blacklisted;
+#endif
 
 	dprintk("acpi_cpufreq_cpu_init\n");
 
 #ifdef CONFIG_SMP
-	result = acpi_cpufreq_blacklist(c);
-	if (result)
-		return result;
+	if (blacklisted)
+		return blacklisted;
+	blacklisted = acpi_cpufreq_blacklist(c);
+	if (blacklisted)
+		return blacklisted;
 #endif
 
 	data = kzalloc(sizeof(struct acpi_cpufreq_data), GFP_KERNEL);
diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c
index ce2ed3e..cabd2fa 100644
--- a/arch/x86/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c
@@ -813,7 +813,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
 			memcpy(eblcr, samuel2_eblcr, sizeof(samuel2_eblcr));
 			break;
 		case 1 ... 15:
-			longhaul_version = TYPE_LONGHAUL_V1;
+			longhaul_version = TYPE_LONGHAUL_V2;
 			if (c->x86_mask < 8) {
 				cpu_model = CPU_SAMUEL2;
 				cpuname = "C3 'Samuel 2' [C5B]";
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 6394aa5..3f12dab 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1022,7 +1022,7 @@ static int get_transition_latency(struct powernow_k8_data *data)
 		 * set it to 1 to avoid problems in the future.
 		 * For all others it's a BIOS bug.
 		 */
-		if (!boot_cpu_data.x86 == 0x11)
+		if (boot_cpu_data.x86 != 0x11)
 			printk(KERN_ERR FW_WARN PFX "Invalid zero transition "
 				"latency\n");
 		max_latency = 1;
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
index 6911e91..3ae5a7a 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
@@ -232,28 +232,23 @@ static unsigned int speedstep_detect_chipset(void)
 	return 0;
 }
 
-struct get_freq_data {
-	unsigned int speed;
-	unsigned int processor;
-};
-
-static void get_freq_data(void *_data)
+static void get_freq_data(void *_speed)
 {
-	struct get_freq_data *data = _data;
+	unsigned int *speed = _speed;
 
-	data->speed = speedstep_get_frequency(data->processor);
+	*speed = speedstep_get_frequency(speedstep_processor);
 }
 
 static unsigned int speedstep_get(unsigned int cpu)
 {
-	struct get_freq_data data = { .processor = cpu };
+	unsigned int speed;
 
 	/* You're supposed to ensure CPU is online. */
-	if (smp_call_function_single(cpu, get_freq_data, &data, 1) != 0)
+	if (smp_call_function_single(cpu, get_freq_data, &speed, 1) != 0)
 		BUG();
 
-	dprintk("detected %u kHz as current frequency\n", data.speed);
-	return data.speed;
+	dprintk("detected %u kHz as current frequency\n", speed);
+	return speed;
 }
 
 /**