diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 208ecf6643df42a80233e3ec10979cba52297241..54b6de2cd9478907d383424e38539935274c6516 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -693,8 +693,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	if (perf->control_register.space_id == ACPI_ADR_SPACE_FIXED_HARDWARE &&
 	    policy->cpuinfo.transition_latency > 20 * 1000) {
 		policy->cpuinfo.transition_latency = 20 * 1000;
-			printk_once(KERN_INFO "Capping off P-state tranision"
-				    " latency at 20 uS\n");
+		printk_once(KERN_INFO
+			    "P-state transition latency capped at 20 uS\n");
 	}
 
 	/* table init */
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 95650f83ce2e35f709f951ca51c9422b821d37d5..bc46de3d967f62904962e06bf9beef26095a9a78 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -116,9 +116,6 @@ int acpi_pci_bind(struct acpi_device *device)
 	struct acpi_pci_data *pdata;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	acpi_handle handle;
-	struct pci_dev *dev;
-	struct pci_bus *bus;
-
 
 	if (!device || !device->parent)
 		return -EINVAL;
@@ -176,20 +173,9 @@ int acpi_pci_bind(struct acpi_device *device)
 	 * Locate matching device in PCI namespace.  If it doesn't exist
 	 * this typically means that the device isn't currently inserted
 	 * (e.g. docking station, port replicator, etc.).
-	 * We cannot simply search the global pci device list, since
-	 * PCI devices are added to the global pci list when the root
-	 * bridge start ops are run, which may not have happened yet.
 	 */
-	bus = pci_find_bus(data->id.segment, data->id.bus);
-	if (bus) {
-		list_for_each_entry(dev, &bus->devices, bus_list) {
-			if (dev->devfn == PCI_DEVFN(data->id.device,
-						    data->id.function)) {
-				data->dev = dev;
-				break;
-			}
-		}
-	}
+	data->dev = pci_get_slot(pdata->bus,
+				PCI_DEVFN(data->id.device, data->id.function));
 	if (!data->dev) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Device %04x:%02x:%02x.%d not present in PCI namespace\n",
@@ -259,9 +245,10 @@ int acpi_pci_bind(struct acpi_device *device)
 
       end:
 	kfree(buffer.pointer);
-	if (result)
+	if (result) {
+		pci_dev_put(data->dev);
 		kfree(data);
-
+	}
 	return result;
 }
 
@@ -303,6 +290,7 @@ static int acpi_pci_unbind(struct acpi_device *device)
 	if (data->dev->subordinate) {
 		acpi_pci_irq_del_prt(data->id.segment, data->bus->number);
 	}
+	pci_dev_put(data->dev);
 	kfree(data);
 
       end:
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 72069ba5f1edc666d765f0131d509290e74244ab..10a2d913635a99d76502309efb55895d7a92c5e4 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -148,6 +148,9 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
 	if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
 		return;
 
+	if (boot_cpu_has(X86_FEATURE_AMDC1E))
+		type = ACPI_STATE_C1;
+
 	/*
 	 * Check, if one of the previous states already marked the lapic
 	 * unstable
@@ -611,6 +614,7 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
 		switch (cx->type) {
 		case ACPI_STATE_C1:
 			cx->valid = 1;
+			acpi_timer_check_state(i, pr, cx);
 			break;
 
 		case ACPI_STATE_C2:
@@ -830,11 +834,12 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
 	/* Do not access any ACPI IO ports in suspend path */
 	if (acpi_idle_suspend) {
-		acpi_safe_halt();
 		local_irq_enable();
+		cpu_relax();
 		return 0;
 	}
 
+	acpi_state_timer_broadcast(pr, cx, 1);
 	kt1 = ktime_get_real();
 	acpi_idle_do_entry(cx);
 	kt2 = ktime_get_real();
@@ -842,6 +847,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
 	local_irq_enable();
 	cx->usage++;
+	acpi_state_timer_broadcast(pr, cx, 0);
 
 	return idle_time;
 }
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index cafb41000f6bd6b36eaaa4b4348faef59e5c0e49..60e543d3234ea8528b2e55537511690ee3be0d96 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -309,9 +309,15 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 				  (u32) px->bus_master_latency,
 				  (u32) px->control, (u32) px->status));
 
-		if (!px->core_frequency) {
-			printk(KERN_ERR PREFIX
-				    "Invalid _PSS data: freq is zero\n");
+		/*
+ 		 * Check that ACPI's u64 MHz will be valid as u32 KHz in cpufreq
+		 */
+		if (!px->core_frequency ||
+		    ((u32)(px->core_frequency * 1000) !=
+		     (px->core_frequency * 1000))) {
+			printk(KERN_ERR FW_BUG PREFIX
+			       "Invalid BIOS _PSS frequency: 0x%llx MHz\n",
+			       px->core_frequency);
 			result = -EFAULT;
 			kfree(pr->performance->states);
 			goto end;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 7f16f5f8e7d395616a0d82ae8dbbd8fca8a336fb..227543789ba91db984862f52040fc18d1a7758e9 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -840,7 +840,7 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
 		state = acpi_get_throttling_state(pr, value);
 		if (state == -1) {
 			ACPI_WARNING((AE_INFO,
-				"Invalid throttling state, reset\n"));
+				"Invalid throttling state, reset"));
 			state = 0;
 			ret = acpi_processor_set_throttling(pr, state);
 			if (ret)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 810cca90ca7f0e390c2ad3a4dee33353848a0d43..1bdfb37377e32d58bcd1f3e35e858c1cc681aa5c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -570,6 +570,22 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"),
 		},
 	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "eMachines E510",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"),
+		},
+	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "Acer Aspire 5315",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
+		},
+	},
 	{}
 };
 
@@ -2334,7 +2350,7 @@ static int __init acpi_video_init(void)
 	return acpi_video_register();
 }
 
-void __exit acpi_video_exit(void)
+void acpi_video_exit(void)
 {
 
 	acpi_bus_unregister_driver(&acpi_video_bus);
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index 1955ee8d6d2019df1e3b9182b6abb54a2823f587..a600fc0f79625a268ef6114fda6d3d3de49d4ded 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -173,7 +173,7 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device)
 	xfercap = (xfercap_scale == 0 ? -1 : (1UL << xfercap_scale));
 
 #ifdef  CONFIG_I7300_IDLE_IOAT_CHANNEL
-	if (i7300_idle_platform_probe(NULL, NULL) == 0) {
+	if (i7300_idle_platform_probe(NULL, NULL, 1) == 0) {
 		device->common.chancnt--;
 	}
 #endif
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 4cd35d8fd799a1e75de762954bc34af86e79190b..f5d46e7199d48d03c12bfbc7b866540e607cddf1 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -67,12 +67,18 @@ config DRM_I830
 	  will load the correct one.
 
 config DRM_I915
+	tristate "i915 driver"
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
 	select FB
 	select FRAMEBUFFER_CONSOLE if !EMBEDDED
-	tristate "i915 driver"
+	# i915 depends on ACPI_VIDEO when ACPI is enabled
+	# but for select to work, need to select ACPI_VIDEO's dependencies, ick
+	select VIDEO_OUTPUT_CONTROL if ACPI
+	select BACKLIGHT_CLASS_DEVICE if ACPI
+	select INPUT if ACPI
+	select ACPI_VIDEO if ACPI
 	help
 	  Choose this option if you have a system that has Intel 830M, 845G,
 	  852GM, 855GM 865G or 915G integrated graphics.  If M is selected, the
@@ -84,12 +90,6 @@ config DRM_I915
 config DRM_I915_KMS
 	bool "Enable modesetting on intel by default"
 	depends on DRM_I915
-	# i915 KMS depends on ACPI_VIDEO when ACPI is enabled
-	# but for select to work, need to select ACPI_VIDEO's dependencies, ick
-	select VIDEO_OUTPUT_CONTROL if ACPI
-	select BACKLIGHT_CLASS_DEVICE if ACPI
-	select INPUT if ACPI
-	select ACPI_VIDEO if ACPI
 	help
 	  Choose this option if you want kernel modesetting enabled by default,
 	  and you have a new enough userspace to support this. Running old
diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c
index bf740394d70431f1cb0f37732f6ca68fd7aaa4ed..949c97ff57e35bec6917c4aab4aca2ebaa165c32 100644
--- a/drivers/idle/i7300_idle.c
+++ b/drivers/idle/i7300_idle.c
@@ -41,6 +41,10 @@ static int debug;
 module_param_named(debug, debug, uint, 0644);
 MODULE_PARM_DESC(debug, "Enable debug printks in this driver");
 
+static int forceload;
+module_param_named(forceload, forceload, uint, 0644);
+MODULE_PARM_DESC(debug, "Enable driver testing on unvalidated i5000");
+
 #define dprintk(fmt, arg...) \
 	do { if (debug) printk(KERN_INFO I7300_PRINT fmt, ##arg); } while (0)
 
@@ -552,7 +556,7 @@ static int __init i7300_idle_init(void)
 	cpus_clear(idle_cpumask);
 	total_us = 0;
 
-	if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev))
+	if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev, forceload))
 		return -ENODEV;
 
 	if (i7300_idle_thrt_save())
diff --git a/include/linux/i7300_idle.h b/include/linux/i7300_idle.h
index 05a80c44513cc665f2fa13abe8dc769b3ebc5efd..1587b7dec505ff182f6f5beceaee97907ecb9381 100644
--- a/include/linux/i7300_idle.h
+++ b/include/linux/i7300_idle.h
@@ -16,35 +16,33 @@
 struct fbd_ioat {
 	unsigned int vendor;
 	unsigned int ioat_dev;
+	unsigned int enabled;
 };
 
 /*
  * The i5000 chip-set has the same hooks as the i7300
- * but support is disabled by default because this driver
- * has not been validated on that platform.
+ * but it is not enabled by default and must be manually
+ * manually enabled with "forceload=1" because it is
+ * only lightly validated.
  */
-#define SUPPORT_I5000 0
 
 static const struct fbd_ioat fbd_ioat_list[] = {
-	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB},
-#if SUPPORT_I5000
-	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT},
-#endif
+	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB, 1},
+	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT, 0},
 	{0, 0}
 };
 
 /* table of devices that work with this driver */
 static const struct pci_device_id pci_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) },
-#if SUPPORT_I5000
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
-#endif
 	{ } /* Terminating entry */
 };
 
 /* Check for known platforms with I/O-AT */
 static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev,
-						struct pci_dev **ioat_dev)
+						struct pci_dev **ioat_dev,
+						int enable_all)
 {
 	int i;
 	struct pci_dev *memdev, *dmadev;
@@ -69,6 +67,8 @@ static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev,
 	for (i = 0; fbd_ioat_list[i].vendor != 0; i++) {
 		if (dmadev->vendor == fbd_ioat_list[i].vendor &&
 		    dmadev->device == fbd_ioat_list[i].ioat_dev) {
+			if (!(fbd_ioat_list[i].enabled || enable_all))
+				continue;
 			if (fbd_dev)
 				*fbd_dev = memdev;
 			if (ioat_dev)