Merge branches 'acpi_pad-bugzilla-42981', 'apei-bugzilla-43282', 'video-bugzilla-43168', 'bugzilla-40002' and 'bugfix-misc' into release

bug fixes
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 8afb693..b2297e5 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -422,12 +422,14 @@
 		return 0;
 	}
 
-	if (intsrc->source_irq == 0 && intsrc->global_irq == 2) {
+	if (intsrc->source_irq == 0) {
 		if (acpi_skip_timer_override) {
-			printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
+			printk(PREFIX "BIOS IRQ0 override ignored.\n");
 			return 0;
 		}
-		if (acpi_fix_pin2_polarity && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
+
+		if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
+			&& (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
 			intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
 			printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
 		}
@@ -1334,17 +1336,12 @@
 }
 
 /*
- * Force ignoring BIOS IRQ0 pin2 override
+ * Force ignoring BIOS IRQ0 override
  */
 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
 {
-	/*
-	 * The ati_ixp4x0_rev() early PCI quirk should have set
-	 * the acpi_skip_timer_override flag already:
-	 */
 	if (!acpi_skip_timer_override) {
-		WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
-		pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
+		pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
 			d->ident);
 		acpi_skip_timer_override = 1;
 	}
@@ -1438,7 +1435,7 @@
 	 * is enabled.  This input is incorrectly designated the
 	 * ISA IRQ 0 via an interrupt source override even though
 	 * it is wired to the output of the master 8259A and INTIN0
-	 * is not connected at all.  Force ignoring BIOS IRQ0 pin2
+	 * is not connected at all.  Force ignoring BIOS IRQ0
 	 * override in that cases.
 	 */
 	{
@@ -1473,6 +1470,14 @@
 		     DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
 		     },
 	 },
+	{
+	 .callback = dmi_ignore_irq0_timer_override,
+	 .ident = "FUJITSU SIEMENS",
+	 .matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
+		     },
+	 },
 	{}
 };
 
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 25b48ed..5de92f1 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -451,6 +451,14 @@
 			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 990"),
 		},
 	},
+	{	/* Handle problems with rebooting on the Precision M6600. */
+		.callback = set_pci_reboot,
+		.ident = "Dell OptiPlex 990",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Precision M6600"),
+		},
+	},
 	{ }
 };
 
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index a43fa1a..1502c502 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -36,6 +36,7 @@
 #define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator"
 #define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80
 static DEFINE_MUTEX(isolated_cpus_lock);
+static DEFINE_MUTEX(round_robin_lock);
 
 static unsigned long power_saving_mwait_eax;
 
@@ -107,7 +108,7 @@
 	if (!alloc_cpumask_var(&tmp, GFP_KERNEL))
 		return;
 
-	mutex_lock(&isolated_cpus_lock);
+	mutex_lock(&round_robin_lock);
 	cpumask_clear(tmp);
 	for_each_cpu(cpu, pad_busy_cpus)
 		cpumask_or(tmp, tmp, topology_thread_cpumask(cpu));
@@ -116,7 +117,7 @@
 	if (cpumask_empty(tmp))
 		cpumask_andnot(tmp, cpu_online_mask, pad_busy_cpus);
 	if (cpumask_empty(tmp)) {
-		mutex_unlock(&isolated_cpus_lock);
+		mutex_unlock(&round_robin_lock);
 		return;
 	}
 	for_each_cpu(cpu, tmp) {
@@ -131,7 +132,7 @@
 	tsk_in_cpu[tsk_index] = preferred_cpu;
 	cpumask_set_cpu(preferred_cpu, pad_busy_cpus);
 	cpu_weight[preferred_cpu]++;
-	mutex_unlock(&isolated_cpus_lock);
+	mutex_unlock(&round_robin_lock);
 
 	set_cpus_allowed_ptr(current, cpumask_of(preferred_cpu));
 }
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 9f66181..240a244 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -173,7 +173,7 @@
 {
 	int result = 0;
 
-	if (!strncmp(val, "enable", strlen("enable") - 1)) {
+	if (!strncmp(val, "enable", strlen("enable"))) {
 		result = acpi_debug_trace(trace_method_name, trace_debug_level,
 					  trace_debug_layer, 0);
 		if (result)
@@ -181,7 +181,7 @@
 		goto exit;
 	}
 
-	if (!strncmp(val, "disable", strlen("disable") - 1)) {
+	if (!strncmp(val, "disable", strlen("disable"))) {
 		int name = 0;
 		result = acpi_debug_trace((char *)&name, trace_debug_level,
 					  trace_debug_layer, 0);
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a576575..1e0a9e1 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -558,6 +558,8 @@
 	union acpi_object arg0 = { ACPI_TYPE_INTEGER };
 	struct acpi_object_list args = { 1, &arg0 };
 
+	if (!video->cap._DOS)
+		return 0;
 
 	if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1)
 		return -EINVAL;