Merge branch 'linus' into release

Conflicts:
	arch/x86/kernel/acpi/sleep.c

Signed-off-by: Len Brown <len.brown@intel.com>

8 files changed, 170 insertions, 27 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 2aa042a5da6d..3a17ca5fff6f 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -7,7 +7,6 @@ menuconfig ACPI
 	depends on !IA64_HP_SIM
 	depends on IA64 || X86
 	depends on PCI
-	depends on PM
 	select PNP
 	default y
 	help
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index 9ecf6feae830..66a03caa2ad9 100644
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig
@@ -1,5 +1,6 @@
 config ACPI_APEI
 	bool "ACPI Platform Error Interface (APEI)"
+	select PSTORE
 	depends on X86
 	help
 	  APEI allows to report errors (for example from the chipset)
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 8ff8c32fef58..d6cb0ff6988e 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -34,6 +34,7 @@
 #include <linux/cper.h>
 #include <linux/nmi.h>
 #include <linux/hardirq.h>
+#include <linux/pstore.h>
 #include <acpi/apei.h>
 
 #include "apei-internal.h"
@@ -928,6 +929,128 @@ static int erst_check_table(struct acpi_table_erst *erst_tab)
 	return 0;
 }
 
+static size_t erst_reader(u64 *id, enum pstore_type_id *type,
+		       struct timespec *time);
+static u64 erst_writer(enum pstore_type_id type, size_t size);
+
+static struct pstore_info erst_info = {
+	.owner		= THIS_MODULE,
+	.name		= "erst",
+	.read		= erst_reader,
+	.write		= erst_writer,
+	.erase		= erst_clear
+};
+
+#define CPER_CREATOR_PSTORE						\
+	UUID_LE(0x75a574e3, 0x5052, 0x4b29, 0x8a, 0x8e, 0xbe, 0x2c,	\
+		0x64, 0x90, 0xb8, 0x9d)
+#define CPER_SECTION_TYPE_DMESG						\
+	UUID_LE(0xc197e04e, 0xd545, 0x4a70, 0x9c, 0x17, 0xa5, 0x54,	\
+		0x94, 0x19, 0xeb, 0x12)
+#define CPER_SECTION_TYPE_MCE						\
+	UUID_LE(0xfe08ffbe, 0x95e4, 0x4be7, 0xbc, 0x73, 0x40, 0x96,	\
+		0x04, 0x4a, 0x38, 0xfc)
+
+struct cper_pstore_record {
+	struct cper_record_header hdr;
+	struct cper_section_descriptor sec_hdr;
+	char data[];
+} __packed;
+
+static size_t erst_reader(u64 *id, enum pstore_type_id *type,
+		       struct timespec *time)
+{
+	int rc;
+	ssize_t len;
+	unsigned long flags;
+	u64 record_id;
+	struct cper_pstore_record *rcd = (struct cper_pstore_record *)
+					(erst_info.buf - sizeof(*rcd));
+
+	if (erst_disable)
+		return -ENODEV;
+
+	raw_spin_lock_irqsave(&erst_lock, flags);
+skip:
+	rc = __erst_get_next_record_id(&record_id);
+	if (rc) {
+		raw_spin_unlock_irqrestore(&erst_lock, flags);
+		return rc;
+	}
+	/* no more record */
+	if (record_id == APEI_ERST_INVALID_RECORD_ID) {
+		raw_spin_unlock_irqrestore(&erst_lock, flags);
+		return 0;
+	}
+
+	len = __erst_read(record_id, &rcd->hdr, sizeof(*rcd) +
+			  erst_erange.size);
+	if (uuid_le_cmp(rcd->hdr.creator_id, CPER_CREATOR_PSTORE) != 0)
+		goto skip;
+	raw_spin_unlock_irqrestore(&erst_lock, flags);
+
+	*id = record_id;
+	if (uuid_le_cmp(rcd->sec_hdr.section_type,
+			CPER_SECTION_TYPE_DMESG) == 0)
+		*type = PSTORE_TYPE_DMESG;
+	else if (uuid_le_cmp(rcd->sec_hdr.section_type,
+			     CPER_SECTION_TYPE_MCE) == 0)
+		*type = PSTORE_TYPE_MCE;
+	else
+		*type = PSTORE_TYPE_UNKNOWN;
+
+	if (rcd->hdr.validation_bits & CPER_VALID_TIMESTAMP)
+		time->tv_sec = rcd->hdr.timestamp;
+	else
+		time->tv_sec = 0;
+	time->tv_nsec = 0;
+
+	return len - sizeof(*rcd);
+}
+
+static u64 erst_writer(enum pstore_type_id type, size_t size)
+{
+	struct cper_pstore_record *rcd = (struct cper_pstore_record *)
+					(erst_info.buf - sizeof(*rcd));
+
+	memset(rcd, 0, sizeof(*rcd));
+	memcpy(rcd->hdr.signature, CPER_SIG_RECORD, CPER_SIG_SIZE);
+	rcd->hdr.revision = CPER_RECORD_REV;
+	rcd->hdr.signature_end = CPER_SIG_END;
+	rcd->hdr.section_count = 1;
+	rcd->hdr.error_severity = CPER_SEV_FATAL;
+	/* timestamp valid. platform_id, partition_id are invalid */
+	rcd->hdr.validation_bits = CPER_VALID_TIMESTAMP;
+	rcd->hdr.timestamp = get_seconds();
+	rcd->hdr.record_length = sizeof(*rcd) + size;
+	rcd->hdr.creator_id = CPER_CREATOR_PSTORE;
+	rcd->hdr.notification_type = CPER_NOTIFY_MCE;
+	rcd->hdr.record_id = cper_next_record_id();
+	rcd->hdr.flags = CPER_HW_ERROR_FLAGS_PREVERR;
+
+	rcd->sec_hdr.section_offset = sizeof(*rcd);
+	rcd->sec_hdr.section_length = size;
+	rcd->sec_hdr.revision = CPER_SEC_REV;
+	/* fru_id and fru_text is invalid */
+	rcd->sec_hdr.validation_bits = 0;
+	rcd->sec_hdr.flags = CPER_SEC_PRIMARY;
+	switch (type) {
+	case PSTORE_TYPE_DMESG:
+		rcd->sec_hdr.section_type = CPER_SECTION_TYPE_DMESG;
+		break;
+	case PSTORE_TYPE_MCE:
+		rcd->sec_hdr.section_type = CPER_SECTION_TYPE_MCE;
+		break;
+	default:
+		return -EINVAL;
+	}
+	rcd->sec_hdr.section_severity = CPER_SEV_FATAL;
+
+	erst_write(&rcd->hdr);
+
+	return rcd->hdr.record_id;
+}
+
 static int __init erst_init(void)
 {
 	int rc = 0;
@@ -935,6 +1058,7 @@ static int __init erst_init(void)
 	struct apei_exec_context ctx;
 	struct apei_resources erst_resources;
 	struct resource *r;
+	char *buf;
 
 	if (acpi_disabled)
 		goto err;
@@ -1001,6 +1125,18 @@ static int __init erst_init(void)
 	if (!erst_erange.vaddr)
 		goto err_release_erange;
 
+	buf = kmalloc(erst_erange.size, GFP_KERNEL);
+	mutex_init(&erst_info.buf_mutex);
+	if (buf) {
+		erst_info.buf = buf + sizeof(struct cper_pstore_record);
+		erst_info.bufsize = erst_erange.size -
+				    sizeof(struct cper_pstore_record);
+		if (pstore_register(&erst_info)) {
+			pr_info(ERST_PFX "Could not register with persistent store\n");
+			kfree(buf);
+		}
+	}
+
 	pr_info(ERST_PFX
 	"Error Record Serialization Table (ERST) support is initialized.\n");
 
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 7ced61f39492..9749980ca6ca 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -40,6 +40,7 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <linux/dmi.h>
+#include <linux/suspend.h>
 
 #include "internal.h"
 
@@ -1006,8 +1007,7 @@ struct kobject *acpi_kobj;
 
 static int __init acpi_init(void)
 {
-	int result = 0;
-
+	int result;
 
 	if (acpi_disabled) {
 		printk(KERN_INFO PREFIX "Interpreter disabled.\n");
@@ -1022,29 +1022,18 @@ static int __init acpi_init(void)
 
 	init_acpi_device_notify();
 	result = acpi_bus_init();
-
-	if (!result) {
-		pci_mmcfg_late_init();
-		if (!(pm_flags & PM_APM))
-			pm_flags |= PM_ACPI;
-		else {
-			printk(KERN_INFO PREFIX
-			       "APM is already active, exiting\n");
-			disable_acpi();
-			result = -ENODEV;
-		}
-	} else
+	if (result) {
 		disable_acpi();
-
-	if (acpi_disabled)
 		return result;
+	}
 
+	pci_mmcfg_late_init();
 	acpi_scan_init();
 	acpi_ec_init();
 	acpi_debugfs_init();
 	acpi_sleep_proc_init();
 	acpi_wakeup_device_init();
-	return result;
+	return 0;
 }
 
 subsys_initcall(acpi_init);
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 5eb25eb3ea48..3b5c3189fd99 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -274,7 +274,7 @@ acpi_table_parse_srat(enum acpi_srat_type id,
 
 int __init acpi_numa_init(void)
 {
-	int ret = 0;
+	int cnt = 0;
 
 	/*
 	 * Should not limit number with cpu num that is from NR_CPUS or nr_cpus=
@@ -288,7 +288,7 @@ int __init acpi_numa_init(void)
 				     acpi_parse_x2apic_affinity, 0);
 		acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
 				     acpi_parse_processor_affinity, 0);
-		ret = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
+		cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
 					    acpi_parse_memory_affinity,
 					    NR_NODE_MEMBLKS);
 	}
@@ -297,7 +297,10 @@ int __init acpi_numa_init(void)
 	acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
 
 	acpi_numa_arch_fixup();
-	return ret;
+
+	if (cnt <= 0)
+		return cnt ?: -ENOENT;
+	return 0;
 }
 
 int acpi_get_pxm(acpi_handle h)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 45c6ac8790d7..45ad4ffef533 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1608,9 +1608,9 @@ acpi_status __init acpi_os_initialize(void)
 
 acpi_status __init acpi_os_initialize1(void)
 {
-	kacpid_wq = create_workqueue("kacpid");
-	kacpi_notify_wq = create_workqueue("kacpi_notify");
-	kacpi_hotplug_wq = create_workqueue("kacpi_hotplug");
+	kacpid_wq = alloc_workqueue("kacpid", 0, 1);
+	kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1);
+	kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1);
 	BUG_ON(!kacpid_wq);
 	BUG_ON(!kacpi_notify_wq);
 	BUG_ON(!kacpi_hotplug_wq);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 84f57143ad7c..6c949602cbd1 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -16,6 +16,7 @@
 #include <linux/device.h>
 #include <linux/suspend.h>
 #include <linux/reboot.h>
+#include <linux/acpi.h>
 
 #include <asm/io.h>
 
@@ -567,7 +568,7 @@ int acpi_suspend(u32 acpi_state)
 	return -EINVAL;
 }
 
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
 /**
  *	acpi_pm_device_sleep_state - return preferred power state of ACPI device
  *		in the system sleep state given by %acpi_target_sleep_state
@@ -653,7 +654,7 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
 		*d_min_p = d_min;
 	return d_max;
 }
-#endif /* CONFIG_PM_OPS */
+#endif /* CONFIG_PM */
 
 #ifdef CONFIG_PM_SLEEP
 /**
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 90f8f7676d1f..a18e497f1c3c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -782,6 +782,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 
 	if (acpi_video_backlight_support()) {
 		struct backlight_properties props;
+		struct pci_dev *pdev;
+		acpi_handle acpi_parent;
+		struct device *parent = NULL;
 		int result;
 		static int count = 0;
 		char *name;
@@ -794,9 +797,20 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 			return;
 		count++;
 
+		acpi_get_parent(device->dev->handle, &acpi_parent);
+
+		pdev = acpi_get_pci_dev(acpi_parent);
+		if (pdev) {
+			parent = &pdev->dev;
+			pci_dev_put(pdev);
+		}
+
 		memset(&props, 0, sizeof(struct backlight_properties));
+		props.type = BACKLIGHT_FIRMWARE;
 		props.max_brightness = device->brightness->count - 3;
-		device->backlight = backlight_device_register(name, NULL, device,
+		device->backlight = backlight_device_register(name,
+							      parent,
+							      device,
 							      &acpi_backlight_ops,
 							      &props);
 		kfree(name);