Adding upstream version 6.9.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

45 files changed, 910 insertions, 361 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3c3f8037eb..ff1689bb31 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -286,7 +286,7 @@ config ACPI_CPPC_LIB
 
 config ACPI_PROCESSOR
 	tristate "Processor"
-	depends on X86 || ARM64 || LOONGARCH
+	depends on X86 || ARM64 || LOONGARCH || RISCV
 	select ACPI_PROCESSOR_IDLE
 	select ACPI_CPU_FREQ_PSS if X86 || LOONGARCH
 	select THERMAL
@@ -449,20 +449,6 @@ config ACPI_HED
 	  which is used to report some hardware errors notified via
 	  SCI, mainly the corrected errors.
 
-config ACPI_CUSTOM_METHOD
-	tristate "Allow ACPI methods to be inserted/replaced at run time"
-	depends on DEBUG_FS
-	help
-	  This debug facility allows ACPI AML methods to be inserted and/or
-	  replaced without rebooting the system. For details refer to:
-	  Documentation/firmware-guide/acpi/method-customizing.rst.
-
-	  NOTE: This option is security sensitive, because it allows arbitrary
-	  kernel memory to be written to by root (uid=0) users, allowing them
-	  to bypass certain security measures (e.g. if root is not allowed to
-	  load additional kernel modules after boot, this feature may be used
-	  to override that restriction).
-
 config ACPI_BGRT
 	bool "Boottime Graphics Resource Table support"
 	depends on EFI && (X86 || ARM64)
@@ -474,7 +460,6 @@ config ACPI_BGRT
 
 config ACPI_REDUCED_HARDWARE_ONLY
 	bool "Hardware-reduced ACPI support only" if EXPERT
-	def_bool n
 	help
 	  This config item changes the way the ACPI code is built.  When this
 	  option is selected, the kernel will use a specialized version of
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 12ef8180d2..8cc8c0d9c8 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -101,7 +101,6 @@ obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
 obj-$(CONFIG_ACPI_SBS)		+= sbs.o
 obj-$(CONFIG_ACPI_HED)		+= hed.o
 obj-$(CONFIG_ACPI_EC_DEBUGFS)	+= ec_sys.o
-obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o
 obj-$(CONFIG_ACPI_BGRT)		+= bgrt.o
 obj-$(CONFIG_ACPI_CPPC_LIB)	+= cppc_acpi.o
 obj-$(CONFIG_ACPI_SPCR_TABLE)	+= spcr.o
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 8e01792228..04e273167e 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -325,7 +325,6 @@ static const struct lpss_device_desc bsw_i2c_dev_desc = {
 
 static const struct property_entry bsw_spi_properties[] = {
 	PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BSW_SSP),
-	PROPERTY_ENTRY_U32("num-cs", 2),
 	{ }
 };
 
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 4fe2ef5408..7a0dd35d62 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -161,7 +161,7 @@ static void cpufreq_add_device(const char *name)
 
 	pdev = platform_device_register_simple(name, PLATFORM_DEVID_NONE, NULL, 0);
 	if (IS_ERR(pdev))
-		pr_info("%s device creation failed: %ld\n", name, PTR_ERR(pdev));
+		pr_info("%s device creation failed: %pe\n", name, pdev);
 }
 
 #ifdef CONFIG_X86
@@ -381,6 +381,9 @@ static int acpi_processor_add(struct acpi_device *device,
 	struct device *dev;
 	int result = 0;
 
+	if (!acpi_device_is_enabled(device))
+		return -ENODEV;
+
 	pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
 	if (!pr)
 		return -ENOMEM;
diff --git a/drivers/acpi/acpi_tad.c b/drivers/acpi/acpi_tad.c
index 33c3b16af5..1d670dbe4d 100644
--- a/drivers/acpi/acpi_tad.c
+++ b/drivers/acpi/acpi_tad.c
@@ -554,7 +554,7 @@ static int acpi_tad_disable_timer(struct device *dev, u32 timer_id)
 	return acpi_tad_wake_set(dev, "_STV", timer_id, ACPI_TAD_WAKE_DISABLED);
 }
 
-static int acpi_tad_remove(struct platform_device *pdev)
+static void acpi_tad_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	acpi_handle handle = ACPI_HANDLE(dev);
@@ -579,7 +579,6 @@ static int acpi_tad_remove(struct platform_device *pdev)
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
 	acpi_remove_cmos_rtc_space_handler(handle);
-	return 0;
 }
 
 static int acpi_tad_probe(struct platform_device *pdev)
@@ -684,7 +683,7 @@ static struct platform_driver acpi_tad_driver = {
 		.acpi_match_table = acpi_tad_ids,
 	},
 	.probe = acpi_tad_probe,
-	.remove = acpi_tad_remove,
+	.remove_new = acpi_tad_remove,
 };
 MODULE_DEVICE_TABLE(acpi, acpi_tad_ids);
 
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 4afdda9db0..1fda303882 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -612,7 +612,7 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
 
 static int
 acpi_video_device_EDID(struct acpi_video_device *device,
-		       union acpi_object **edid, ssize_t length)
+		       union acpi_object **edid, int length)
 {
 	int status;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -625,13 +625,11 @@ acpi_video_device_EDID(struct acpi_video_device *device,
 
 	if (!device)
 		return -ENODEV;
-	if (length == 128)
-		arg0.integer.value = 1;
-	else if (length == 256)
-		arg0.integer.value = 2;
-	else
+	if (!length || (length % 128))
 		return -EINVAL;
 
+	arg0.integer.value = length / 128;
+
 	status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
@@ -641,7 +639,8 @@ acpi_video_device_EDID(struct acpi_video_device *device,
 	if (obj && obj->type == ACPI_TYPE_BUFFER)
 		*edid = obj;
 	else {
-		acpi_handle_info(device->dev->handle, "Invalid _DDC data\n");
+		acpi_handle_debug(device->dev->handle,
+				 "Invalid _DDC data for length %d\n", length);
 		status = -EFAULT;
 		kfree(obj);
 	}
@@ -1447,7 +1446,6 @@ int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
 
 	for (i = 0; i < video->attached_count; i++) {
 		video_device = video->attached_array[i].bind_info;
-		length = 256;
 
 		if (!video_device)
 			continue;
@@ -1478,18 +1476,14 @@ int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
 			continue;
 		}
 
-		status = acpi_video_device_EDID(video_device, &buffer, length);
-
-		if (ACPI_FAILURE(status) || !buffer ||
-		    buffer->type != ACPI_TYPE_BUFFER) {
-			length = 128;
+		for (length = 512; length > 0; length -= 128) {
 			status = acpi_video_device_EDID(video_device, &buffer,
 							length);
-			if (ACPI_FAILURE(status) || !buffer ||
-			    buffer->type != ACPI_TYPE_BUFFER) {
-				continue;
-			}
+			if (ACPI_SUCCESS(status))
+				break;
 		}
+		if (!length)
+			continue;
 
 		*edid = buffer->buffer.pointer;
 		return length;
diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c
index 8e9e001da3..14b2415779 100644
--- a/drivers/acpi/acpi_watchdog.c
+++ b/drivers/acpi/acpi_watchdog.c
@@ -179,7 +179,7 @@ void __init acpi_watchdog_init(void)
 	pdev = platform_device_register_simple("wdat_wdt", PLATFORM_DEVID_NONE,
 					       resources, nresources);
 	if (IS_ERR(pdev))
-		pr_err("Device creation failed: %ld\n", PTR_ERR(pdev));
+		pr_err("Device creation failed: %pe\n", pdev);
 
 	kfree(resources);
 
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index 8d18af396d..30f3fc13c2 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -5,7 +5,6 @@
 
 ccflags-y			:= -D_LINUX -DBUILDING_ACPICA
 ccflags-$(CONFIG_ACPI_DEBUG)	+= -DACPI_DEBUG_OUTPUT
-CFLAGS_tbfind.o 		+= $(call cc-disable-warning, stringop-truncation)
 
 # use acpi.o to put all files here into acpi.o modparam namespace
 obj-y	+= acpi.o
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index 6b18f8bc7b..3cfe7e7475 100644
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig
@@ -60,6 +60,19 @@ config ACPI_APEI_EINJ
 	  mainly used for debugging and testing the other parts of
 	  APEI and some other RAS features.
 
+config ACPI_APEI_EINJ_CXL
+	bool "CXL Error INJection Support"
+	default ACPI_APEI_EINJ
+	depends on ACPI_APEI_EINJ
+	depends on CXL_BUS && CXL_BUS <= ACPI_APEI_EINJ
+	help
+	  Support for CXL protocol Error INJection through debugfs/cxl.
+	  Availability and which errors are supported is dependent on
+	  the host platform. Look to ACPI v6.5 section 18.6.4 and kernel
+	  EINJ documentation for more information.
+
+	  If unsure say 'n'
+
 config ACPI_APEI_ERST_DEBUG
 	tristate "APEI Error Record Serialization Table (ERST) Debug Support"
 	depends on ACPI_APEI
diff --git a/drivers/acpi/apei/Makefile b/drivers/acpi/apei/Makefile
index 4dfac21287..2c474e6477 100644
--- a/drivers/acpi/apei/Makefile
+++ b/drivers/acpi/apei/Makefile
@@ -2,6 +2,8 @@
 obj-$(CONFIG_ACPI_APEI)		+= apei.o
 obj-$(CONFIG_ACPI_APEI_GHES)	+= ghes.o
 obj-$(CONFIG_ACPI_APEI_EINJ)	+= einj.o
+einj-y				:= einj-core.o
+einj-$(CONFIG_ACPI_APEI_EINJ_CXL) += einj-cxl.o
 obj-$(CONFIG_ACPI_APEI_ERST_DEBUG) += erst-dbg.o
 
 apei-y := apei-base.o hest.o erst.o bert.o
diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
index 67c2c3b959..cd2766c69d 100644
--- a/drivers/acpi/apei/apei-internal.h
+++ b/drivers/acpi/apei/apei-internal.h
@@ -130,4 +130,22 @@ static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus)
 }
 
 int apei_osc_setup(void);
+
+int einj_get_available_error_type(u32 *type);
+int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3,
+		      u64 param4);
+int einj_cxl_rch_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
+			      u64 param3, u64 param4);
+bool einj_is_cxl_error_type(u64 type);
+int einj_validate_error_type(u64 type);
+
+#ifndef ACPI_EINJ_CXL_CACHE_CORRECTABLE
+#define ACPI_EINJ_CXL_CACHE_CORRECTABLE     BIT(12)
+#define ACPI_EINJ_CXL_CACHE_UNCORRECTABLE   BIT(13)
+#define ACPI_EINJ_CXL_CACHE_FATAL           BIT(14)
+#define ACPI_EINJ_CXL_MEM_CORRECTABLE       BIT(15)
+#define ACPI_EINJ_CXL_MEM_UNCORRECTABLE     BIT(16)
+#define ACPI_EINJ_CXL_MEM_FATAL             BIT(17)
+#endif
+
 #endif
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj-core.c
index 89fb9331c6..01faca3a23 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj-core.c
@@ -21,6 +21,7 @@
 #include <linux/nmi.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
+#include <linux/platform_device.h>
 #include <asm/unaligned.h>
 
 #include "apei-internal.h"
@@ -36,6 +37,12 @@
 #define MEM_ERROR_MASK		(ACPI_EINJ_MEMORY_CORRECTABLE | \
 				ACPI_EINJ_MEMORY_UNCORRECTABLE | \
 				ACPI_EINJ_MEMORY_FATAL)
+#define CXL_ERROR_MASK		(ACPI_EINJ_CXL_CACHE_CORRECTABLE | \
+				ACPI_EINJ_CXL_CACHE_UNCORRECTABLE | \
+				ACPI_EINJ_CXL_CACHE_FATAL | \
+				ACPI_EINJ_CXL_MEM_CORRECTABLE | \
+				ACPI_EINJ_CXL_MEM_UNCORRECTABLE | \
+				ACPI_EINJ_CXL_MEM_FATAL)
 
 /*
  * ACPI version 5 provides a SET_ERROR_TYPE_WITH_ADDRESS action.
@@ -137,6 +144,11 @@ static struct apei_exec_ins_type einj_ins_type[] = {
  */
 static DEFINE_MUTEX(einj_mutex);
 
+/*
+ * Exported APIs use this flag to exit early if einj_probe() failed.
+ */
+bool einj_initialized __ro_after_init;
+
 static void *einj_param;
 
 static void einj_exec_ctx_init(struct apei_exec_context *ctx)
@@ -160,7 +172,7 @@ static int __einj_get_available_error_type(u32 *type)
 }
 
 /* Get error injection capabilities of the platform */
-static int einj_get_available_error_type(u32 *type)
+int einj_get_available_error_type(u32 *type)
 {
 	int rc;
 
@@ -530,8 +542,8 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
 }
 
 /* Inject the specified hardware error */
-static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
-			     u64 param3, u64 param4)
+int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3,
+		      u64 param4)
 {
 	int rc;
 	u64 base_addr, size;
@@ -554,8 +566,17 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
 	if (type & ACPI5_VENDOR_BIT) {
 		if (vendor_flags != SETWA_FLAGS_MEM)
 			goto inject;
-	} else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM))
+	} else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM)) {
 		goto inject;
+	}
+
+	/*
+	 * Injections targeting a CXL 1.0/1.1 port have to be injected
+	 * via the einj_cxl_rch_error_inject() path as that does the proper
+	 * validation of the given RCRB base (MMIO) address.
+	 */
+	if (einj_is_cxl_error_type(type) && (flags & SETWA_FLAGS_MEM))
+		return -EINVAL;
 
 	/*
 	 * Disallow crazy address masks that give BIOS leeway to pick
@@ -587,6 +608,21 @@ inject:
 	return rc;
 }
 
+int einj_cxl_rch_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
+			      u64 param3, u64 param4)
+{
+	int rc;
+
+	if (!(einj_is_cxl_error_type(type) && (flags & SETWA_FLAGS_MEM)))
+		return -EINVAL;
+
+	mutex_lock(&einj_mutex);
+	rc = __einj_error_inject(type, flags, param1, param2, param3, param4);
+	mutex_unlock(&einj_mutex);
+
+	return rc;
+}
+
 static u32 error_type;
 static u32 error_flags;
 static u64 error_param1;
@@ -607,12 +643,6 @@ static struct { u32 mask; const char *str; } const einj_error_type_string[] = {
 	{ BIT(9), "Platform Correctable" },
 	{ BIT(10), "Platform Uncorrectable non-fatal" },
 	{ BIT(11), "Platform Uncorrectable fatal"},
-	{ BIT(12), "CXL.cache Protocol Correctable" },
-	{ BIT(13), "CXL.cache Protocol Uncorrectable non-fatal" },
-	{ BIT(14), "CXL.cache Protocol Uncorrectable fatal" },
-	{ BIT(15), "CXL.mem Protocol Correctable" },
-	{ BIT(16), "CXL.mem Protocol Uncorrectable non-fatal" },
-	{ BIT(17), "CXL.mem Protocol Uncorrectable fatal" },
 	{ BIT(31), "Vendor Defined Error Types" },
 };
 
@@ -641,22 +671,26 @@ static int error_type_get(void *data, u64 *val)
 	return 0;
 }
 
-static int error_type_set(void *data, u64 val)
+bool einj_is_cxl_error_type(u64 type)
 {
+	return (type & CXL_ERROR_MASK) && (!(type & ACPI5_VENDOR_BIT));
+}
+
+int einj_validate_error_type(u64 type)
+{
+	u32 tval, vendor, available_error_type = 0;
 	int rc;
-	u32 available_error_type = 0;
-	u32 tval, vendor;
 
 	/* Only low 32 bits for error type are valid */
-	if (val & GENMASK_ULL(63, 32))
+	if (type & GENMASK_ULL(63, 32))
 		return -EINVAL;
 
 	/*
 	 * Vendor defined types have 0x80000000 bit set, and
 	 * are not enumerated by ACPI_EINJ_GET_ERROR_TYPE
 	 */
-	vendor = val & ACPI5_VENDOR_BIT;
-	tval = val & 0x7fffffff;
+	vendor = type & ACPI5_VENDOR_BIT;
+	tval = type & GENMASK(30, 0);
 
 	/* Only one error type can be specified */
 	if (tval & (tval - 1))
@@ -665,9 +699,21 @@ static int error_type_set(void *data, u64 val)
 		rc = einj_get_available_error_type(&available_error_type);
 		if (rc)
 			return rc;
-		if (!(val & available_error_type))
+		if (!(type & available_error_type))
 			return -EINVAL;
 	}
+
+	return 0;
+}
+
+static int error_type_set(void *data, u64 val)
+{
+	int rc;
+
+	rc = einj_validate_error_type(val);
+	if (rc)
+		return rc;
+
 	error_type = val;
 
 	return 0;
@@ -703,21 +749,21 @@ static int einj_check_table(struct acpi_table_einj *einj_tab)
 	return 0;
 }
 
-static int __init einj_init(void)
+static int __init einj_probe(struct platform_device *pdev)
 {
 	int rc;
 	acpi_status status;
 	struct apei_exec_context ctx;
 
 	if (acpi_disabled) {
-		pr_info("ACPI disabled.\n");
+		pr_debug("ACPI disabled.\n");
 		return -ENODEV;
 	}
 
 	status = acpi_get_table(ACPI_SIG_EINJ, 0,
 				(struct acpi_table_header **)&einj_tab);
 	if (status == AE_NOT_FOUND) {
-		pr_warn("EINJ table not found.\n");
+		pr_debug("EINJ table not found.\n");
 		return -ENODEV;
 	} else if (ACPI_FAILURE(status)) {
 		pr_err("Failed to get EINJ table: %s\n",
@@ -805,7 +851,7 @@ err_put_table:
 	return rc;
 }
 
-static void __exit einj_exit(void)
+static void einj_remove(struct platform_device *pdev)
 {
 	struct apei_exec_context ctx;
 
@@ -826,6 +872,40 @@ static void __exit einj_exit(void)
 	acpi_put_table((struct acpi_table_header *)einj_tab);
 }
 
+static struct platform_device *einj_dev;
+static struct platform_driver einj_driver = {
+	.remove_new = einj_remove,
+	.driver = {
+		.name = "acpi-einj",
+	},
+};
+
+static int __init einj_init(void)
+{
+	struct platform_device_info einj_dev_info = {
+		.name = "acpi-einj",
+		.id = -1,
+	};
+	int rc;
+
+	einj_dev = platform_device_register_full(&einj_dev_info);
+	if (IS_ERR(einj_dev))
+		return PTR_ERR(einj_dev);
+
+	rc = platform_driver_probe(&einj_driver, einj_probe);
+	einj_initialized = rc == 0;
+
+	return 0;
+}
+
+static void __exit einj_exit(void)
+{
+	if (einj_initialized)
+		platform_driver_unregister(&einj_driver);
+
+	platform_device_del(einj_dev);
+}
+
 module_init(einj_init);
 module_exit(einj_exit);
 
diff --git a/drivers/acpi/apei/einj-cxl.c b/drivers/acpi/apei/einj-cxl.c
new file mode 100644
index 0000000000..8b8be0c907
--- /dev/null
+++ b/drivers/acpi/apei/einj-cxl.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * CXL Error INJection support. Used by CXL core to inject
+ * protocol errors into CXL ports.
+ *
+ * Copyright (C) 2023 Advanced Micro Devices, Inc.
+ *
+ * Author: Ben Cheatham <benjamin.cheatham@amd.com>
+ */
+#include <linux/einj-cxl.h>
+#include <linux/seq_file.h>
+#include <linux/pci.h>
+
+#include "apei-internal.h"
+
+/* Defined in einj-core.c */
+extern bool einj_initialized;
+
+static struct { u32 mask; const char *str; } const einj_cxl_error_type_string[] = {
+	{ ACPI_EINJ_CXL_CACHE_CORRECTABLE, "CXL.cache Protocol Correctable" },
+	{ ACPI_EINJ_CXL_CACHE_UNCORRECTABLE, "CXL.cache Protocol Uncorrectable non-fatal" },
+	{ ACPI_EINJ_CXL_CACHE_FATAL, "CXL.cache Protocol Uncorrectable fatal" },
+	{ ACPI_EINJ_CXL_MEM_CORRECTABLE, "CXL.mem Protocol Correctable" },
+	{ ACPI_EINJ_CXL_MEM_UNCORRECTABLE, "CXL.mem Protocol Uncorrectable non-fatal" },
+	{ ACPI_EINJ_CXL_MEM_FATAL, "CXL.mem Protocol Uncorrectable fatal" },
+};
+
+int einj_cxl_available_error_type_show(struct seq_file *m, void *v)
+{
+	int cxl_err, rc;
+	u32 available_error_type = 0;
+
+	rc = einj_get_available_error_type(&available_error_type);
+	if (rc)
+		return rc;
+
+	for (int pos = 0; pos < ARRAY_SIZE(einj_cxl_error_type_string); pos++) {
+		cxl_err = ACPI_EINJ_CXL_CACHE_CORRECTABLE << pos;
+
+		if (available_error_type & cxl_err)
+			seq_printf(m, "0x%08x\t%s\n",
+				   einj_cxl_error_type_string[pos].mask,
+				   einj_cxl_error_type_string[pos].str);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(einj_cxl_available_error_type_show, CXL);
+
+static int cxl_dport_get_sbdf(struct pci_dev *dport_dev, u64 *sbdf)
+{
+	struct pci_bus *pbus;
+	struct pci_host_bridge *bridge;
+	u64 seg = 0, bus;
+
+	pbus = dport_dev->bus;
+	bridge = pci_find_host_bridge(pbus);
+
+	if (!bridge)
+		return -ENODEV;
+
+	if (bridge->domain_nr != PCI_DOMAIN_NR_NOT_SET)
+		seg = bridge->domain_nr;
+
+	bus = pbus->number;
+	*sbdf = (seg << 24) | (bus << 16) | dport_dev->devfn;
+
+	return 0;
+}
+
+int einj_cxl_inject_rch_error(u64 rcrb, u64 type)
+{
+	int rc;
+
+	/* Only CXL error types can be specified */
+	if (!einj_is_cxl_error_type(type))
+		return -EINVAL;
+
+	rc = einj_validate_error_type(type);
+	if (rc)
+		return rc;
+
+	return einj_cxl_rch_error_inject(type, 0x2, rcrb, GENMASK_ULL(63, 0),
+					 0, 0);
+}
+EXPORT_SYMBOL_NS_GPL(einj_cxl_inject_rch_error, CXL);
+
+int einj_cxl_inject_error(struct pci_dev *dport, u64 type)
+{
+	u64 param4 = 0;
+	int rc;
+
+	/* Only CXL error types can be specified */
+	if (!einj_is_cxl_error_type(type))
+		return -EINVAL;
+
+	rc = einj_validate_error_type(type);
+	if (rc)
+		return rc;
+
+	rc = cxl_dport_get_sbdf(dport, &param4);
+	if (rc)
+		return rc;
+
+	return einj_error_inject(type, 0x4, 0, 0, 0, param4);
+}
+EXPORT_SYMBOL_NS_GPL(einj_cxl_inject_error, CXL);
+
+bool einj_cxl_is_initialized(void)
+{
+	return einj_initialized;
+}
+EXPORT_SYMBOL_NS_GPL(einj_cxl_is_initialized, CXL);
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index ab2a82cb1b..512067cac1 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1455,7 +1455,7 @@ err:
 	return rc;
 }
 
-static int ghes_remove(struct platform_device *ghes_dev)
+static void ghes_remove(struct platform_device *ghes_dev)
 {
 	int rc;
 	struct ghes *ghes;
@@ -1492,8 +1492,15 @@ static int ghes_remove(struct platform_device *ghes_dev)
 		break;
 	case ACPI_HEST_NOTIFY_SOFTWARE_DELEGATED:
 		rc = apei_sdei_unregister_ghes(ghes);
-		if (rc)
-			return rc;
+		if (rc) {
+			/*
+			 * Returning early results in a resource leak, but we're
+			 * only here if stopping the hardware failed.
+			 */
+			dev_err(&ghes_dev->dev, "Failed to unregister ghes (%pe)\n",
+				ERR_PTR(rc));
+			return;
+		}
 		break;
 	default:
 		BUG();
@@ -1507,8 +1514,6 @@ static int ghes_remove(struct platform_device *ghes_dev)
 	mutex_unlock(&ghes_devs_mutex);
 
 	kfree(ghes);
-
-	return 0;
 }
 
 static struct platform_driver ghes_platform_driver = {
@@ -1516,7 +1521,7 @@ static struct platform_driver ghes_platform_driver = {
 		.name	= "GHES",
 	},
 	.probe		= ghes_probe,
-	.remove		= ghes_remove,
+	.remove_new	= ghes_remove,
 };
 
 void __init acpi_ghes_init(void)
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
index 6aef1ee5e1..20d757687e 100644
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c
@@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hest_disable);
 
 static struct acpi_table_hest *__read_mostly hest_tab;
 
+/*
+ * Since GHES_ASSIST is not supported, skip initialization of GHES_ASSIST
+ * structures for MCA.
+ * During HEST parsing, detected MCA error sources are cached from early
+ * table entries so that the Flags and Source Id fields from these cached
+ * values are then referred to in later table entries to determine if the
+ * encountered GHES_ASSIST structure should be initialized.
+ */
+static struct {
+	struct acpi_hest_ia_corrected *cmc;
+	struct acpi_hest_ia_machine_check *mc;
+	struct acpi_hest_ia_deferred_check *dmc;
+} mces;
+
 static const int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = {
 	[ACPI_HEST_TYPE_IA32_CHECK] = -1,	/* need further calculation */
 	[ACPI_HEST_TYPE_IA32_CORRECTED_CHECK] = -1,
@@ -70,22 +84,54 @@ static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
 		cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
 		len = sizeof(*cmc) + cmc->num_hardware_banks *
 			sizeof(struct acpi_hest_ia_error_bank);
+		mces.cmc = cmc;
 	} else if (hest_type == ACPI_HEST_TYPE_IA32_CHECK) {
 		struct acpi_hest_ia_machine_check *mc;
 		mc = (struct acpi_hest_ia_machine_check *)hest_hdr;
 		len = sizeof(*mc) + mc->num_hardware_banks *
 			sizeof(struct acpi_hest_ia_error_bank);
+		mces.mc = mc;
 	} else if (hest_type == ACPI_HEST_TYPE_IA32_DEFERRED_CHECK) {
 		struct acpi_hest_ia_deferred_check *mc;
 		mc = (struct acpi_hest_ia_deferred_check *)hest_hdr;
 		len = sizeof(*mc) + mc->num_hardware_banks *
 			sizeof(struct acpi_hest_ia_error_bank);
+		mces.dmc = mc;
 	}
 	BUG_ON(len == -1);
 
 	return len;
 };
 
+/*
+ * GHES and GHESv2 structures share the same format, starting from
+ * Source Id and ending in Error Status Block Length (inclusive).
+ */
+static bool is_ghes_assist_struct(struct acpi_hest_header *hest_hdr)
+{
+	struct acpi_hest_generic *ghes;
+	u16 related_source_id;
+
+	if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR &&
+	    hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR_V2)
+		return false;
+
+	ghes = (struct acpi_hest_generic *)hest_hdr;
+	related_source_id = ghes->related_source_id;
+
+	if (mces.cmc && mces.cmc->flags & ACPI_HEST_GHES_ASSIST &&
+	    related_source_id == mces.cmc->header.source_id)
+		return true;
+	if (mces.mc && mces.mc->flags & ACPI_HEST_GHES_ASSIST &&
+	    related_source_id == mces.mc->header.source_id)
+		return true;
+	if (mces.dmc && mces.dmc->flags & ACPI_HEST_GHES_ASSIST &&
+	    related_source_id == mces.dmc->header.source_id)
+		return true;
+
+	return false;
+}
+
 typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
 
 static int apei_hest_parse(apei_hest_func_t func, void *data)
@@ -114,6 +160,11 @@ static int apei_hest_parse(apei_hest_func_t func, void *data)
 			return -EINVAL;
 		}
 
+		if (is_ghes_assist_struct(hest_hdr)) {
+			hest_hdr = (void *)hest_hdr + len;
+			continue;
+		}
+
 		rc = func(hest_hdr, data);
 		if (rc)
 			return rc;
diff --git a/drivers/acpi/arm64/agdi.c b/drivers/acpi/arm64/agdi.c
index 8b3c7d42b4..f5f21dd0d2 100644
--- a/drivers/acpi/arm64/agdi.c
+++ b/drivers/acpi/arm64/agdi.c
@@ -58,7 +58,7 @@ static int agdi_probe(struct platform_device *pdev)
 	return agdi_sdei_probe(pdev, adata);
 }
 
-static int agdi_remove(struct platform_device *pdev)
+static void agdi_remove(struct platform_device *pdev)
 {
 	struct agdi_data *adata = dev_get_platdata(&pdev->dev);
 	int err, i;
@@ -67,7 +67,7 @@ static int agdi_remove(struct platform_device *pdev)
 	if (err) {
 		dev_err(&pdev->dev, "Failed to disable sdei-event #%d (%pe)\n",
 			adata->sdei_event, ERR_PTR(err));
-		return 0;
+		return;
 	}
 
 	for (i = 0; i < 3; i++) {
@@ -81,8 +81,6 @@ static int agdi_remove(struct platform_device *pdev)
 	if (err)
 		dev_err(&pdev->dev, "Failed to unregister sdei-event #%d (%pe)\n",
 			adata->sdei_event, ERR_PTR(err));
-
-	return 0;
 }
 
 static struct platform_driver agdi_driver = {
@@ -90,7 +88,7 @@ static struct platform_driver agdi_driver = {
 		.name = "agdi",
 	},
 	.probe = agdi_probe,
-	.remove = agdi_remove,
+	.remove_new = agdi_remove,
 };
 
 void __init acpi_agdi_init(void)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 3f84d8ed9d..d9fa730416 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -316,14 +316,9 @@ static void acpi_bus_osc_negotiate_platform_control(void)
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
 	if (IS_ENABLED(CONFIG_ACPI_PROCESSOR))
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
-	if (IS_ENABLED(CONFIG_ACPI_THERMAL))
-		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT;
 
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
-	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_OVER_16_PSTATES_SUPPORT;
-	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GED_SUPPORT;
-	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_IRQ_RESOURCE_SOURCE_SUPPORT;
 	if (IS_ENABLED(CONFIG_ACPI_PRMT))
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT;
 	if (IS_ENABLED(CONFIG_ACPI_FFH))
@@ -1102,7 +1097,7 @@ static void acpi_device_remove(struct device *dev)
 	put_device(dev);
 }
 
-struct bus_type acpi_bus_type = {
+const struct bus_type acpi_bus_type = {
 	.name		= "acpi",
 	.match		= acpi_bus_match,
 	.probe		= acpi_device_probe,
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 1b27ebc6d0..a40b6f3946 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -1200,6 +1200,19 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf)
 }
 
 /**
+ * cppc_get_highest_perf - Get the highest performance register value.
+ * @cpunum: CPU from which to get highest performance.
+ * @highest_perf: Return address.
+ *
+ * Return: 0 for success, -EIO otherwise.
+ */
+int cppc_get_highest_perf(int cpunum, u64 *highest_perf)
+{
+	return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf);
+}
+EXPORT_SYMBOL_GPL(cppc_get_highest_perf);
+
+/**
  * cppc_get_epp_perf - Get the epp register value.
  * @cpunum: CPU from which to get epp preference value.
  * @epp_perf: Return address.
diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c
deleted file mode 100644
index d39a9b4747..0000000000
--- a/drivers/acpi/custom_method.c
+++ /dev/null
@@ -1,103 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * custom_method.c - debugfs interface for customizing ACPI control method
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/acpi.h>
-#include <linux/security.h>
-
-#include "internal.h"
-
-MODULE_LICENSE("GPL");
-
-static struct dentry *cm_dentry;
-
-/* /sys/kernel/debug/acpi/custom_method */
-
-static ssize_t cm_write(struct file *file, const char __user *user_buf,
-			size_t count, loff_t *ppos)
-{
-	static char *buf;
-	static u32 max_size;
-	static u32 uncopied_bytes;
-
-	struct acpi_table_header table;
-	acpi_status status;
-	int ret;
-
-	ret = security_locked_down(LOCKDOWN_ACPI_TABLES);
-	if (ret)
-		return ret;
-
-	if (!(*ppos)) {
-		/* parse the table header to get the table length */
-		if (count <= sizeof(struct acpi_table_header))
-			return -EINVAL;
-		if (copy_from_user(&table, user_buf,
-				   sizeof(struct acpi_table_header)))
-			return -EFAULT;
-		uncopied_bytes = max_size = table.length;
-		/* make sure the buf is not allocated */
-		kfree(buf);
-		buf = kzalloc(max_size, GFP_KERNEL);
-		if (!buf)
-			return -ENOMEM;
-	}
-
-	if (buf == NULL)
-		return -EINVAL;
-
-	if ((*ppos > max_size) ||
-	    (*ppos + count > max_size) ||
-	    (*ppos + count < count) ||
-	    (count > uncopied_bytes)) {
-		kfree(buf);
-		buf = NULL;
-		return -EINVAL;
-	}
-
-	if (copy_from_user(buf + (*ppos), user_buf, count)) {
-		kfree(buf);
-		buf = NULL;
-		return -EFAULT;
-	}
-
-	uncopied_bytes -= count;
-	*ppos += count;
-
-	if (!uncopied_bytes) {
-		status = acpi_install_method(buf);
-		kfree(buf);
-		buf = NULL;
-		if (ACPI_FAILURE(status))
-			return -EINVAL;
-		add_taint(TAINT_OVERRIDDEN_ACPI_TABLE, LOCKDEP_NOW_UNRELIABLE);
-	}
-
-	return count;
-}
-
-static const struct file_operations cm_fops = {
-	.write = cm_write,
-	.llseek = default_llseek,
-};
-
-static int __init acpi_custom_method_init(void)
-{
-	cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
-					acpi_debugfs_dir, NULL, &cm_fops);
-	return 0;
-}
-
-static void __exit acpi_custom_method_exit(void)
-{
-	debugfs_remove(cm_dentry);
-}
-
-module_init(acpi_custom_method_init);
-module_exit(acpi_custom_method_exit);
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index a89bdbe001..a7c00ef780 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -380,6 +380,8 @@ static int dock_in_progress(struct dock_station *ds)
 
 /**
  * handle_eject_request - handle an undock request checking for error conditions
+ * @ds: The dock station to undock.
+ * @event: The ACPI event number associated with the undock request.
  *
  * Check to make sure the dock device is still present, then undock and
  * hotremove all the devices that may need removing.
diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c
index 4919e7abe9..654aaa53c6 100644
--- a/drivers/acpi/dptf/dptf_pch_fivr.c
+++ b/drivers/acpi/dptf/dptf_pch_fivr.c
@@ -141,11 +141,9 @@ static int pch_fivr_add(struct platform_device *pdev)
 	return 0;
 }
 
-static int pch_fivr_remove(struct platform_device *pdev)
+static void pch_fivr_remove(struct platform_device *pdev)
 {
 	sysfs_remove_group(&pdev->dev.kobj, &pch_fivr_attribute_group);
-
-	return 0;
 }
 
 static const struct acpi_device_id pch_fivr_device_ids[] = {
@@ -159,7 +157,7 @@ MODULE_DEVICE_TABLE(acpi, pch_fivr_device_ids);
 
 static struct platform_driver pch_fivr_driver = {
 	.probe = pch_fivr_add,
-	.remove = pch_fivr_remove,
+	.remove_new = pch_fivr_remove,
 	.driver = {
 		.name = "dptf_pch_fivr",
 		.acpi_match_table = pch_fivr_device_ids,
diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c
index 86561eda93..b8187babbb 100644
--- a/drivers/acpi/dptf/dptf_power.c
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -209,7 +209,7 @@ static int dptf_power_add(struct platform_device *pdev)
 	return 0;
 }
 
-static int dptf_power_remove(struct platform_device *pdev)
+static void dptf_power_remove(struct platform_device *pdev)
 {
 	struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
 
@@ -221,8 +221,6 @@ static int dptf_power_remove(struct platform_device *pdev)
 		sysfs_remove_group(&pdev->dev.kobj, &dptf_battery_attribute_group);
 	else
 		sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
-
-	return 0;
 }
 
 static const struct acpi_device_id int3407_device_ids[] = {
@@ -242,7 +240,7 @@ MODULE_DEVICE_TABLE(acpi, int3407_device_ids);
 
 static struct platform_driver dptf_power_driver = {
 	.probe = dptf_power_add,
-	.remove = dptf_power_remove,
+	.remove_new = dptf_power_remove,
 	.driver = {
 		.name = "dptf_power",
 		.acpi_match_table = int3407_device_ids,
diff --git a/drivers/acpi/evged.c b/drivers/acpi/evged.c
index fe6b6792c8..11778c9325 100644
--- a/drivers/acpi/evged.c
+++ b/drivers/acpi/evged.c
@@ -173,10 +173,9 @@ static void ged_shutdown(struct platform_device *pdev)
 	}
 }
 
-static int ged_remove(struct platform_device *pdev)
+static void ged_remove(struct platform_device *pdev)
 {
 	ged_shutdown(pdev);
-	return 0;
 }
 
 static const struct acpi_device_id ged_acpi_ids[] = {
@@ -186,7 +185,7 @@ static const struct acpi_device_id ged_acpi_ids[] = {
 
 static struct platform_driver ged_driver = {
 	.probe = ged_probe,
-	.remove = ged_remove,
+	.remove_new = ged_remove,
 	.shutdown = ged_shutdown,
 	.driver = {
 		.name = MODULE_NAME,
diff --git a/drivers/acpi/fan_core.c b/drivers/acpi/fan_core.c
index 9dccbae9e8..ff72e4ef87 100644
--- a/drivers/acpi/fan_core.c
+++ b/drivers/acpi/fan_core.c
@@ -387,7 +387,7 @@ err_end:
 	return result;
 }
 
-static int acpi_fan_remove(struct platform_device *pdev)
+static void acpi_fan_remove(struct platform_device *pdev)
 {
 	struct acpi_fan *fan = platform_get_drvdata(pdev);
 
@@ -399,8 +399,6 @@ static int acpi_fan_remove(struct platform_device *pdev)
 	sysfs_remove_link(&pdev->dev.kobj, "thermal_cooling");
 	sysfs_remove_link(&fan->cdev->device.kobj, "device");
 	thermal_cooling_device_unregister(fan->cdev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -446,7 +444,7 @@ static const struct dev_pm_ops acpi_fan_pm = {
 
 static struct platform_driver acpi_fan_driver = {
 	.probe = acpi_fan_probe,
-	.remove = acpi_fan_remove,
+	.remove_new = acpi_fan_remove,
 	.driver = {
 		.name = "acpi-fan",
 		.acpi_match_table = fan_device_ids,
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 6588525c45..ca72a0dc57 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -121,6 +121,7 @@ int acpi_device_setup_files(struct acpi_device *dev);
 void acpi_device_remove_files(struct acpi_device *dev);
 void acpi_device_add_finalize(struct acpi_device *device);
 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
+bool acpi_device_is_enabled(const struct acpi_device *adev);
 bool acpi_device_is_present(const struct acpi_device *adev);
 bool acpi_device_is_battery(struct acpi_device *adev);
 bool acpi_device_is_first_physical_node(struct acpi_device *adev,
@@ -301,5 +302,6 @@ void acpi_mipi_check_crs_csi2(acpi_handle handle);
 void acpi_mipi_scan_crs_csi2(void);
 void acpi_mipi_init_crs_csi2_swnodes(void);
 void acpi_mipi_crs_csi2_cleanup(void);
+bool acpi_graph_ignore_port(acpi_handle handle);
 
 #endif /* _ACPI_INTERNAL_H_ */
diff --git a/drivers/acpi/mipi-disco-img.c b/drivers/acpi/mipi-disco-img.c
index 7286cf4579..d05413a067 100644
--- a/drivers/acpi/mipi-disco-img.c
+++ b/drivers/acpi/mipi-disco-img.c
@@ -19,6 +19,7 @@
  */
 
 #include <linux/acpi.h>
+#include <linux/dmi.h>
 #include <linux/limits.h>
 #include <linux/list.h>
 #include <linux/module.h>
@@ -723,3 +724,73 @@ void acpi_mipi_crs_csi2_cleanup(void)
 	list_for_each_entry_safe(csi2, csi2_tmp, &acpi_mipi_crs_csi2_list, entry)
 		acpi_mipi_del_crs_csi2(csi2);
 }
+
+static const struct dmi_system_id dmi_ignore_port_nodes[] = {
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "XPS 9315"),
+		},
+	},
+	{ }
+};
+
+static const char *strnext(const char *s1, const char *s2)
+{
+	s1 = strstr(s1, s2);
+
+	if (!s1)
+		return NULL;
+
+	return s1 + strlen(s2);
+}
+
+/**
+ * acpi_graph_ignore_port - Tell whether a port node should be ignored
+ * @handle: The ACPI handle of the node (which may be a port node)
+ *
+ * Return: true if a port node should be ignored and the data to that should
+ * come from other sources instead (Windows ACPI definitions and
+ * ipu-bridge). This is currently used to ignore bad port nodes related to IPU6
+ * ("IPU?") and camera sensor devices ("LNK?") in certain Dell systems with
+ * Intel VSC.
+ */
+bool acpi_graph_ignore_port(acpi_handle handle)
+{
+	const char *path = NULL, *orig_path;
+	static bool dmi_tested, ignore_port;
+
+	if (!dmi_tested) {
+		ignore_port = dmi_first_match(dmi_ignore_port_nodes);
+		dmi_tested = true;
+	}
+
+	if (!ignore_port)
+		return false;
+
+	/* Check if the device is either "IPU" or "LNK" (sensor). */
+	orig_path = acpi_handle_path(handle);
+	if (!orig_path)
+		return false;
+	path = strnext(orig_path, "IPU");
+	if (!path)
+		path = strnext(orig_path, "LNK");
+	if (!path)
+		goto out_free;
+
+	if (!(isdigit(path[0]) && path[1] == '.'))
+		goto out_free;
+
+	/* Check if the node has a "PRT" prefix. */
+	path = strnext(path, "PRT");
+	if (path && isdigit(path[0]) && !path[1]) {
+		acpi_handle_debug(handle, "ignoring data node\n");
+
+		kfree(orig_path);
+		return true;
+	}
+
+out_free:
+	kfree(orig_path);
+	return false;
+}
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 802f8a56d1..d4595d1985 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1737,9 +1737,8 @@ __weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem)
 	if ((nfit_mem->dsm_mask & (1 << func)) == 0)
 		return;
 
-	out_obj = acpi_evaluate_dsm(handle, guid, revid, func, &in_obj);
-	if (!out_obj || out_obj->type != ACPI_TYPE_BUFFER
-			|| out_obj->buffer.length < sizeof(smart)) {
+	out_obj = acpi_evaluate_dsm_typed(handle, guid, revid, func, &in_obj, ACPI_TYPE_BUFFER);
+	if (!out_obj || out_obj->buffer.length < sizeof(smart)) {
 		dev_dbg(dev->parent, "%s: failed to retrieve initial health\n",
 				dev_name(dev));
 		ACPI_FREE(out_obj);
diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
index 75e9aac432..2c8ccc91eb 100644
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -74,6 +74,7 @@ struct memory_target {
 	struct node_cache_attrs cache_attrs;
 	u8 gen_port_device_handle[ACPI_SRAT_DEVICE_HANDLE_SIZE];
 	bool registered;
+	bool ext_updated;	/* externally updated */
 };
 
 struct memory_initiator {
@@ -328,6 +329,35 @@ static void hmat_update_target_access(struct memory_target *target,
 	}
 }
 
+int hmat_update_target_coordinates(int nid, struct access_coordinate *coord,
+				   enum access_coordinate_class access)
+{
+	struct memory_target *target;
+	int pxm;
+
+	if (nid == NUMA_NO_NODE)
+		return -EINVAL;
+
+	pxm = node_to_pxm(nid);
+	guard(mutex)(&target_lock);
+	target = find_mem_target(pxm);
+	if (!target)
+		return -ENODEV;
+
+	hmat_update_target_access(target, ACPI_HMAT_READ_LATENCY,
+				  coord->read_latency, access);
+	hmat_update_target_access(target, ACPI_HMAT_WRITE_LATENCY,
+				  coord->write_latency, access);
+	hmat_update_target_access(target, ACPI_HMAT_READ_BANDWIDTH,
+				  coord->read_bandwidth, access);
+	hmat_update_target_access(target, ACPI_HMAT_WRITE_BANDWIDTH,
+				  coord->write_bandwidth, access);
+	target->ext_updated = true;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(hmat_update_target_coordinates);
+
 static __init void hmat_add_locality(struct acpi_hmat_locality *hmat_loc)
 {
 	struct memory_locality *loc;
@@ -699,6 +729,10 @@ static void hmat_update_target_attrs(struct memory_target *target,
 	u32 best = 0;
 	int i;
 
+	/* Don't update if an external agent has changed the data.  */
+	if (target->ext_updated)
+		return;
+
 	/* Don't update for generic port if there's no device handle */
 	if ((access == NODE_ACCESS_CLASS_GENPORT_SINK_LOCAL ||
 	     access == NODE_ACCESS_CLASS_GENPORT_SINK_CPU) &&
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index 3ca22db3ed..e45e64993c 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -29,6 +29,8 @@ static int node_to_pxm_map[MAX_NUMNODES]
 unsigned char acpi_srat_revision __initdata;
 static int acpi_numa __initdata;
 
+static int last_real_pxm;
+
 void __init disable_srat(void)
 {
 	acpi_numa = -1;
@@ -206,11 +208,6 @@ int __init srat_disabled(void)
 	return acpi_numa < 0;
 }
 
-__weak int __init numa_fill_memblks(u64 start, u64 end)
-{
-	return NUMA_NO_MEMBLK;
-}
-
 #if defined(CONFIG_X86) || defined(CONFIG_ARM64) || defined(CONFIG_LOONGARCH)
 /*
  * Callback for SLIT parsing.  pxm_to_node() returns NUMA_NO_NODE for
@@ -541,6 +538,7 @@ int __init acpi_numa_init(void)
 		if (node_to_pxm_map[i] > fake_pxm)
 			fake_pxm = node_to_pxm_map[i];
 	}
+	last_real_pxm = fake_pxm;
 	fake_pxm++;
 	acpi_table_parse_cedt(ACPI_CEDT_TYPE_CFMWS, acpi_parse_cfmws,
 			      &fake_pxm);
@@ -552,6 +550,14 @@ int __init acpi_numa_init(void)
 	return 0;
 }
 
+bool acpi_node_backed_by_real_pxm(int nid)
+{
+	int pxm = node_to_pxm(nid);
+
+	return pxm <= last_real_pxm;
+}
+EXPORT_SYMBOL_GPL(acpi_node_backed_by_real_pxm);
+
 static int acpi_get_pxm(acpi_handle h)
 {
 	unsigned long long pxm;
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index d6cb2c27a2..741bcc9d6d 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -111,7 +111,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 	snprintf(name, sizeof(name), "%llu", sun);
 	pci_slot = pci_create_slot(pci_bus, device, name, NULL);
 	if (IS_ERR(pci_slot)) {
-		pr_err("pci_create_slot returned %ld\n", PTR_ERR(pci_slot));
+		pr_err("pci_create_slot returned %pe\n", pci_slot);
 		kfree(slot);
 		return AE_OK;
 	}
diff --git a/drivers/acpi/pfr_telemetry.c b/drivers/acpi/pfr_telemetry.c
index 843f678ade..998264a733 100644
--- a/drivers/acpi/pfr_telemetry.c
+++ b/drivers/acpi/pfr_telemetry.c
@@ -347,13 +347,11 @@ static const struct file_operations acpi_pfrt_log_fops = {
 	.llseek		= noop_llseek,
 };
 
-static int acpi_pfrt_log_remove(struct platform_device *pdev)
+static void acpi_pfrt_log_remove(struct platform_device *pdev)
 {
 	struct pfrt_log_device *pfrt_log_dev = platform_get_drvdata(pdev);
 
 	misc_deregister(&pfrt_log_dev->miscdev);
-
-	return 0;
 }
 
 static void pfrt_log_put_idx(void *data)
@@ -427,7 +425,7 @@ static struct platform_driver acpi_pfrt_log_driver = {
 		.acpi_match_table = acpi_pfrt_log_ids,
 	},
 	.probe = acpi_pfrt_log_probe,
-	.remove = acpi_pfrt_log_remove,
+	.remove_new = acpi_pfrt_log_remove,
 };
 module_platform_driver(acpi_pfrt_log_driver);
 
diff --git a/drivers/acpi/pfr_update.c b/drivers/acpi/pfr_update.c
index 98267f163e..8b2910995f 100644
--- a/drivers/acpi/pfr_update.c
+++ b/drivers/acpi/pfr_update.c
@@ -489,13 +489,11 @@ static const struct file_operations acpi_pfru_fops = {
 	.llseek		= noop_llseek,
 };
 
-static int acpi_pfru_remove(struct platform_device *pdev)
+static void acpi_pfru_remove(struct platform_device *pdev)
 {
 	struct pfru_device *pfru_dev = platform_get_drvdata(pdev);
 
 	misc_deregister(&pfru_dev->miscdev);
-
-	return 0;
 }
 
 static void pfru_put_idx(void *data)
@@ -567,7 +565,7 @@ static struct platform_driver acpi_pfru_driver = {
 		.acpi_match_table = acpi_pfru_ids,
 	},
 	.probe = acpi_pfru_probe,
-	.remove = acpi_pfru_remove,
+	.remove_new = acpi_pfru_remove,
 };
 module_platform_driver(acpi_pfru_driver);
 
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 4bd16b3f07..67db60eda3 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -27,6 +27,7 @@
 #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
 #define ACPI_PROCESSOR_NOTIFY_POWER	0x81
 #define ACPI_PROCESSOR_NOTIFY_THROTTLING	0x82
+#define ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED	0x85
 
 MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI Processor Driver");
@@ -83,6 +84,11 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
 		acpi_bus_generate_netlink_event(device->pnp.device_class,
 						  dev_name(&device->dev), event, 0);
 		break;
+	case ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED:
+		cpufreq_update_limits(pr->id);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  dev_name(&device->dev), event, 0);
+		break;
 	default:
 		acpi_handle_debug(handle, "Unsupported event [0x%x]\n", event);
 		break;
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index a6ead52040..2b73580c9f 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -80,6 +80,9 @@ static bool acpi_nondev_subnode_extract(union acpi_object *desc,
 	struct acpi_data_node *dn;
 	bool result;
 
+	if (acpi_graph_ignore_port(handle))
+		return false;
+
 	dn = kzalloc(sizeof(*dn), GFP_KERNEL);
 	if (!dn)
 		return false;
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index b5193049d7..59423fe9d0 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -468,6 +468,13 @@ static const struct dmi_system_id irq1_level_low_skip_override[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "B1502CGA"),
 		},
 	},
+        {
+                /* Asus ExpertBook B1502CVA */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+                        DMI_MATCH(DMI_BOARD_NAME, "B1502CVA"),
+                },
+        },
 	{
 		/* Asus ExpertBook B2402CBA */
 		.matches = {
@@ -616,6 +623,13 @@ static const struct dmi_system_id irq1_edge_low_force_override[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "X577"),
 		},
 	},
+	{
+		/* Maibenben X565 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
+			DMI_MATCH(DMI_BOARD_NAME, "X565"),
+		},
+	},
 	{ }
 };
 
diff --git a/drivers/acpi/riscv/Makefile b/drivers/acpi/riscv/Makefile
index 8b3b126e0b..86b0925f61 100644
--- a/drivers/acpi/riscv/Makefile
+++ b/drivers/acpi/riscv/Makefile
@@ -1,2 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-y 	+= rhct.o
+obj-y					+= rhct.o
+obj-$(CONFIG_ACPI_PROCESSOR_IDLE)	+= cpuidle.o
+obj-$(CONFIG_ACPI_CPPC_LIB)		+= cppc.o
diff --git a/drivers/acpi/riscv/cppc.c b/drivers/acpi/riscv/cppc.c
new file mode 100644
index 0000000000..4cdff387de
--- /dev/null
+++ b/drivers/acpi/riscv/cppc.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implement CPPC FFH helper routines for RISC-V.
+ *
+ * Copyright (C) 2024 Ventana Micro Systems Inc.
+ */
+
+#include <acpi/cppc_acpi.h>
+#include <asm/csr.h>
+#include <asm/sbi.h>
+
+#define SBI_EXT_CPPC 0x43505043
+
+/* CPPC interfaces defined in SBI spec */
+#define SBI_CPPC_PROBE			0x0
+#define SBI_CPPC_READ			0x1
+#define SBI_CPPC_READ_HI		0x2
+#define SBI_CPPC_WRITE			0x3
+
+/* RISC-V FFH definitions from RISC-V FFH spec */
+#define FFH_CPPC_TYPE(r)		(((r) & GENMASK_ULL(63, 60)) >> 60)
+#define FFH_CPPC_SBI_REG(r)		((r) & GENMASK(31, 0))
+#define FFH_CPPC_CSR_NUM(r)		((r) & GENMASK(11, 0))
+
+#define FFH_CPPC_SBI			0x1
+#define FFH_CPPC_CSR			0x2
+
+struct sbi_cppc_data {
+	u64 val;
+	u32 reg;
+	struct sbiret ret;
+};
+
+static bool cppc_ext_present;
+
+static int __init sbi_cppc_init(void)
+{
+	if (sbi_spec_version >= sbi_mk_version(2, 0) &&
+	    sbi_probe_extension(SBI_EXT_CPPC) > 0) {
+		pr_info("SBI CPPC extension detected\n");
+		cppc_ext_present = true;
+	} else {
+		pr_info("SBI CPPC extension NOT detected!!\n");
+		cppc_ext_present = false;
+	}
+
+	return 0;
+}
+device_initcall(sbi_cppc_init);
+
+static void sbi_cppc_read(void *read_data)
+{
+	struct sbi_cppc_data *data = (struct sbi_cppc_data *)read_data;
+
+	data->ret = sbi_ecall(SBI_EXT_CPPC, SBI_CPPC_READ,
+			      data->reg, 0, 0, 0, 0, 0);
+}
+
+static void sbi_cppc_write(void *write_data)
+{
+	struct sbi_cppc_data *data = (struct sbi_cppc_data *)write_data;
+
+	data->ret = sbi_ecall(SBI_EXT_CPPC, SBI_CPPC_WRITE,
+			      data->reg, data->val, 0, 0, 0, 0);
+}
+
+static void cppc_ffh_csr_read(void *read_data)
+{
+	struct sbi_cppc_data *data = (struct sbi_cppc_data *)read_data;
+
+	switch (data->reg) {
+	/* Support only TIME CSR for now */
+	case CSR_TIME:
+		data->ret.value = csr_read(CSR_TIME);
+		data->ret.error = 0;
+		break;
+	default:
+		data->ret.error = -EINVAL;
+		break;
+	}
+}
+
+static void cppc_ffh_csr_write(void *write_data)
+{
+	struct sbi_cppc_data *data = (struct sbi_cppc_data *)write_data;
+
+	data->ret.error = -EINVAL;
+}
+
+/*
+ * Refer to drivers/acpi/cppc_acpi.c for the description of the functions
+ * below.
+ */
+bool cpc_ffh_supported(void)
+{
+	return true;
+}
+
+int cpc_read_ffh(int cpu, struct cpc_reg *reg, u64 *val)
+{
+	struct sbi_cppc_data data;
+
+	if (WARN_ON_ONCE(irqs_disabled()))
+		return -EPERM;
+
+	if (FFH_CPPC_TYPE(reg->address) == FFH_CPPC_SBI) {
+		if (!cppc_ext_present)
+			return -EINVAL;
+
+		data.reg = FFH_CPPC_SBI_REG(reg->address);
+
+		smp_call_function_single(cpu, sbi_cppc_read, &data, 1);
+
+		*val = data.ret.value;
+
+		return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
+	} else if (FFH_CPPC_TYPE(reg->address) == FFH_CPPC_CSR) {
+		data.reg = FFH_CPPC_CSR_NUM(reg->address);
+
+		smp_call_function_single(cpu, cppc_ffh_csr_read, &data, 1);
+
+		*val = data.ret.value;
+
+		return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
+	}
+
+	return -EINVAL;
+}
+
+int cpc_write_ffh(int cpu, struct cpc_reg *reg, u64 val)
+{
+	struct sbi_cppc_data data;
+
+	if (WARN_ON_ONCE(irqs_disabled()))
+		return -EPERM;
+
+	if (FFH_CPPC_TYPE(reg->address) == FFH_CPPC_SBI) {
+		if (!cppc_ext_present)
+			return -EINVAL;
+
+		data.reg = FFH_CPPC_SBI_REG(reg->address);
+		data.val = val;
+
+		smp_call_function_single(cpu, sbi_cppc_write, &data, 1);
+
+		return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
+	} else if (FFH_CPPC_TYPE(reg->address) == FFH_CPPC_CSR) {
+		data.reg = FFH_CPPC_CSR_NUM(reg->address);
+		data.val = val;
+
+		smp_call_function_single(cpu, cppc_ffh_csr_write, &data, 1);
+
+		return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
+	}
+
+	return -EINVAL;
+}
diff --git a/drivers/acpi/riscv/cpuidle.c b/drivers/acpi/riscv/cpuidle.c
new file mode 100644
index 0000000000..624f9bbdb5
--- /dev/null
+++ b/drivers/acpi/riscv/cpuidle.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2024, Ventana Micro Systems Inc
+ *	Author: Sunil V L <sunilvl@ventanamicro.com>
+ *
+ */
+
+#include <linux/acpi.h>
+#include <acpi/processor.h>
+#include <linux/cpu_pm.h>
+#include <linux/cpuidle.h>
+#include <linux/suspend.h>
+#include <asm/cpuidle.h>
+#include <asm/sbi.h>
+#include <asm/suspend.h>
+
+#define RISCV_FFH_LPI_TYPE_MASK	GENMASK_ULL(63, 60)
+#define RISCV_FFH_LPI_RSVD_MASK	GENMASK_ULL(59, 32)
+
+#define RISCV_FFH_LPI_TYPE_SBI	BIT_ULL(60)
+
+static int acpi_cpu_init_idle(unsigned int cpu)
+{
+	int i;
+	struct acpi_lpi_state *lpi;
+	struct acpi_processor *pr = per_cpu(processors, cpu);
+
+	if (unlikely(!pr || !pr->flags.has_lpi))
+		return -EINVAL;
+
+	if (!riscv_sbi_hsm_is_supported())
+		return -ENODEV;
+
+	if (pr->power.count <= 1)
+		return -ENODEV;
+
+	for (i = 1; i < pr->power.count; i++) {
+		u32 state;
+
+		lpi = &pr->power.lpi_states[i];
+
+		/*
+		 * Validate Entry Method as per FFH spec.
+		 * bits[63:60] should be 0x1
+		 * bits[59:32] should be 0x0
+		 * bits[31:0] represent a SBI power_state
+		 */
+		if (((lpi->address & RISCV_FFH_LPI_TYPE_MASK) != RISCV_FFH_LPI_TYPE_SBI) ||
+		    (lpi->address & RISCV_FFH_LPI_RSVD_MASK)) {
+			pr_warn("Invalid LPI entry method %#llx\n", lpi->address);
+			return -EINVAL;
+		}
+
+		state = lpi->address;
+		if (!riscv_sbi_suspend_state_is_valid(state)) {
+			pr_warn("Invalid SBI power state %#x\n", state);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+int acpi_processor_ffh_lpi_probe(unsigned int cpu)
+{
+	return acpi_cpu_init_idle(cpu);
+}
+
+int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
+{
+	u32 state = lpi->address;
+
+	if (state & SBI_HSM_SUSP_NON_RET_BIT)
+		return CPU_PM_CPU_IDLE_ENTER_PARAM(riscv_sbi_hart_suspend,
+						   lpi->index,
+						   state);
+	else
+		return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(riscv_sbi_hart_suspend,
+							     lpi->index,
+							     state);
+}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index eb4ca85d16..d1464324de 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -244,6 +244,53 @@ static int acpi_scan_try_to_offline(struct acpi_device *device)
 	return 0;
 }
 
+static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check)
+{
+	struct acpi_scan_handler *handler = adev->handler;
+
+	acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check);
+
+	if (check) {
+		acpi_bus_get_status(adev);
+		/*
+		 * Skip devices that are still there and take the enabled
+		 * flag into account.
+		 */
+		if (acpi_device_is_enabled(adev))
+			return 0;
+
+		/* Skip device that have not been enumerated. */
+		if (!acpi_device_enumerated(adev)) {
+			dev_dbg(&adev->dev, "Still not enumerated\n");
+			return 0;
+		}
+	}
+
+	adev->flags.match_driver = false;
+	if (handler) {
+		if (handler->detach)
+			handler->detach(adev);
+
+		adev->handler = NULL;
+	} else {
+		device_release_driver(&adev->dev);
+	}
+	/*
+	 * Most likely, the device is going away, so put it into D3cold before
+	 * that.
+	 */
+	acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
+	adev->flags.initialized = false;
+	acpi_device_clear_enumerated(adev);
+
+	return 0;
+}
+
+static void acpi_scan_check_subtree(struct acpi_device *adev)
+{
+	acpi_scan_check_and_detach(adev, (void *)true);
+}
+
 static int acpi_scan_hot_remove(struct acpi_device *device)
 {
 	acpi_handle handle = device->handle;
@@ -289,71 +336,62 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
 	return 0;
 }
 
-static int acpi_scan_device_not_enumerated(struct acpi_device *adev)
+static int acpi_scan_rescan_bus(struct acpi_device *adev)
 {
-	if (!acpi_device_enumerated(adev)) {
-		dev_warn(&adev->dev, "Still not enumerated\n");
-		return -EALREADY;
-	}
-	acpi_bus_trim(adev);
-	return 0;
+	struct acpi_scan_handler *handler = adev->handler;
+	int ret;
+
+	if (handler && handler->hotplug.scan_dependent)
+		ret = handler->hotplug.scan_dependent(adev);
+	else
+		ret = acpi_bus_scan(adev->handle);
+
+	if (ret)
+		dev_info(&adev->dev, "Namespace scan failure\n");
+
+	return ret;
 }
 
 static int acpi_scan_device_check(struct acpi_device *adev)
 {
-	int error;
+	struct acpi_device *parent;
 
-	acpi_bus_get_status(adev);
-	if (acpi_device_is_present(adev)) {
-		/*
-		 * This function is only called for device objects for which
-		 * matching scan handlers exist.  The only situation in which
-		 * the scan handler is not attached to this device object yet
-		 * is when the device has just appeared (either it wasn't
-		 * present at all before or it was removed and then added
-		 * again).
-		 */
-		if (adev->handler) {
-			dev_dbg(&adev->dev, "Already enumerated\n");
-			return 0;
-		}
-		error = acpi_bus_scan(adev->handle);
-		if (error) {
-			dev_warn(&adev->dev, "Namespace scan failure\n");
-			return error;
-		}
-	} else {
-		error = acpi_scan_device_not_enumerated(adev);
-	}
-	return error;
-}
+	acpi_scan_check_subtree(adev);
 
-static int acpi_scan_bus_check(struct acpi_device *adev, void *not_used)
-{
-	struct acpi_scan_handler *handler = adev->handler;
-	int error;
+	if (!acpi_device_is_present(adev))
+		return 0;
 
-	acpi_bus_get_status(adev);
-	if (!acpi_device_is_present(adev)) {
-		acpi_scan_device_not_enumerated(adev);
+	/*
+	 * This function is only called for device objects for which matching
+	 * scan handlers exist.  The only situation in which the scan handler
+	 * is not attached to this device object yet is when the device has
+	 * just appeared (either it wasn't present at all before or it was
+	 * removed and then added again).
+	 */
+	if (adev->handler) {
+		dev_dbg(&adev->dev, "Already enumerated\n");
 		return 0;
 	}
-	if (handler && handler->hotplug.scan_dependent)
-		return handler->hotplug.scan_dependent(adev);
 
-	error = acpi_bus_scan(adev->handle);
-	if (error) {
-		dev_warn(&adev->dev, "Namespace scan failure\n");
-		return error;
-	}
-	return acpi_dev_for_each_child(adev, acpi_scan_bus_check, NULL);
+	parent = acpi_dev_parent(adev);
+	if (!parent)
+		parent = adev;
+
+	return acpi_scan_rescan_bus(parent);
+}
+
+static int acpi_scan_bus_check(struct acpi_device *adev)
+{
+	acpi_scan_check_subtree(adev);
+
+	return acpi_scan_rescan_bus(adev);
 }
 
 static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type)
 {
 	switch (type) {
 	case ACPI_NOTIFY_BUS_CHECK:
-		return acpi_scan_bus_check(adev, NULL);
+		return acpi_scan_bus_check(adev);
 	case ACPI_NOTIFY_DEVICE_CHECK:
 		return acpi_scan_device_check(adev);
 	case ACPI_NOTIFY_EJECT_REQUEST:
@@ -794,6 +832,7 @@ static const char * const acpi_honor_dep_ids[] = {
 	"INTC1059", /* IVSC (TGL) driver must be loaded to allow i2c access to camera sensors */
 	"INTC1095", /* IVSC (ADL) driver must be loaded to allow i2c access to camera sensors */
 	"INTC100A", /* IVSC (RPL) driver must be loaded to allow i2c access to camera sensors */
+	"INTC10CF", /* IVSC (MTL) driver must be loaded to allow i2c access to camera sensors */
 	NULL
 };
 
@@ -1721,7 +1760,9 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 		{"BSG1160", },
 		{"BSG2150", },
 		{"CSC3551", },
+		{"CSC3554", },
 		{"CSC3556", },
+		{"CSC3557", },
 		{"INT33FE", },
 		{"INT3515", },
 		/* Non-conforming _HID for Cirrus Logic already released */
@@ -1919,6 +1960,11 @@ bool acpi_device_is_present(const struct acpi_device *adev)
 	return adev->status.present || adev->status.functional;
 }
 
+bool acpi_device_is_enabled(const struct acpi_device *adev)
+{
+	return adev->status.present && adev->status.enabled;
+}
+
 static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
 				       const char *idstr,
 				       const struct acpi_device_id **matchid)
@@ -2547,32 +2593,6 @@ int acpi_bus_scan(acpi_handle handle)
 }
 EXPORT_SYMBOL(acpi_bus_scan);
 
-static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
-{
-	struct acpi_scan_handler *handler = adev->handler;
-
-	acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL);
-
-	adev->flags.match_driver = false;
-	if (handler) {
-		if (handler->detach)
-			handler->detach(adev);
-
-		adev->handler = NULL;
-	} else {
-		device_release_driver(&adev->dev);
-	}
-	/*
-	 * Most likely, the device is going away, so put it into D3cold before
-	 * that.
-	 */
-	acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
-	adev->flags.initialized = false;
-	acpi_device_clear_enumerated(adev);
-
-	return 0;
-}
-
 /**
  * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects.
  * @adev: Root of the ACPI namespace scope to walk.
@@ -2581,7 +2601,7 @@ static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
  */
 void acpi_bus_trim(struct acpi_device *adev)
 {
-	acpi_bus_trim_one(adev, NULL);
+	acpi_scan_check_and_detach(adev, NULL);
 }
 EXPORT_SYMBOL_GPL(acpi_bus_trim);
 
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 728acfeb77..889f1c1a1f 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -502,6 +502,7 @@ static void acpi_pm_finish(void)
 
 /**
  * acpi_pm_start - Start system PM transition.
+ * @acpi_state: The target ACPI power state to transition to.
  */
 static void acpi_pm_start(u32 acpi_state)
 {
@@ -540,8 +541,9 @@ static u32 acpi_suspend_states[] = {
 };
 
 /**
- *	acpi_suspend_begin - Set the target system sleep state to the state
- *		associated with given @pm_state, if supported.
+ * acpi_suspend_begin - Set the target system sleep state to the state
+ *	associated with given @pm_state, if supported.
+ * @pm_state: The target system power management state.
  */
 static int acpi_suspend_begin(suspend_state_t pm_state)
 {
@@ -671,10 +673,11 @@ static const struct platform_suspend_ops acpi_suspend_ops = {
 };
 
 /**
- *	acpi_suspend_begin_old - Set the target system sleep state to the
- *		state associated with given @pm_state, if supported, and
- *		execute the _PTS control method.  This function is used if the
- *		pre-ACPI 2.0 suspend ordering has been requested.
+ * acpi_suspend_begin_old - Set the target system sleep state to the
+ *	state associated with given @pm_state, if supported, and
+ *	execute the _PTS control method.  This function is used if the
+ *	pre-ACPI 2.0 suspend ordering has been requested.
+ * @pm_state: The target suspend state for the system.
  */
 static int acpi_suspend_begin_old(suspend_state_t pm_state)
 {
@@ -967,10 +970,11 @@ static const struct platform_hibernation_ops acpi_hibernation_ops = {
 };
 
 /**
- *	acpi_hibernation_begin_old - Set the target system sleep state to
- *		ACPI_STATE_S4 and execute the _PTS control method.  This
- *		function is used if the pre-ACPI 2.0 suspend ordering has been
- *		requested.
+ * acpi_hibernation_begin_old - Set the target system sleep state to
+ *	ACPI_STATE_S4 and execute the _PTS control method.  This
+ *	function is used if the pre-ACPI 2.0 suspend ordering has been
+ *	requested.
+ * @stage: The power management event message.
  */
 static int acpi_hibernation_begin_old(pm_message_t stage)
 {
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index b07f7d091d..b976e5fc3f 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -253,7 +253,7 @@ int __init_or_acpilib acpi_table_parse_entries_array(
 
 	count = acpi_parse_entries_array(id, table_size,
 					 (union fw_table_header *)table_header,
-					 proc, proc_num, max_entries);
+					 0, proc, proc_num, max_entries);
 
 	acpi_put_table(table_header);
 	return count;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 4748e80612..d67881b50b 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -47,6 +47,8 @@
 
 #define ACPI_THERMAL_TRIP_PASSIVE	(-1)
 
+#define ACPI_THERMAL_MAX_NR_TRIPS	(ACPI_THERMAL_MAX_ACTIVE + 3)
+
 /*
  * This exception is thrown out in two cases:
  * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid
@@ -112,7 +114,6 @@ struct acpi_thermal {
 	unsigned long polling_frequency;
 	volatile u8 zombie;
 	struct acpi_thermal_trips trips;
-	struct thermal_trip *trip_table;
 	struct thermal_zone_device *thermal_zone;
 	int kelvin_offset;	/* in millidegrees */
 	struct work_struct thermal_check_work;
@@ -451,26 +452,19 @@ fail:
 	return false;
 }
 
-static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
+static void acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 {
-	unsigned int count = 0;
 	int i;
 
-	if (acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE))
-		count++;
+	acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE);
 
 	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
-		if (acpi_thermal_init_trip(tz, i))
-			count++;
-		else
+		if (!acpi_thermal_init_trip(tz, i))
 			break;
-
 	}
 
 	while (++i < ACPI_THERMAL_MAX_ACTIVE)
 		tz->trips.active[i].trip.temp_dk = THERMAL_TEMP_INVALID;
-
-	return count;
 }
 
 /* sys I/F for generic thermal sysfs support */
@@ -626,7 +620,7 @@ acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal,
 	return acpi_thermal_bind_unbind_cdev(thermal, cdev, false);
 }
 
-static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
+static const struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.bind = acpi_thermal_bind_cooling_device,
 	.unbind	= acpi_thermal_unbind_cooling_device,
 	.get_temp = thermal_get_temp,
@@ -662,19 +656,21 @@ static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz)
 }
 
 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz,
+					      const struct thermal_trip *trip_table,
 					      unsigned int trip_count,
 					      int passive_delay)
 {
 	int result;
 
-	tz->thermal_zone = thermal_zone_device_register_with_trips("acpitz",
-								   tz->trip_table,
-								   trip_count,
-								   0, tz,
-								   &acpi_thermal_zone_ops,
-								   NULL,
-								   passive_delay,
-								   tz->polling_frequency * 100);
+	if (trip_count)
+		tz->thermal_zone = thermal_zone_device_register_with_trips(
+					"acpitz", trip_table, trip_count, tz,
+					&acpi_thermal_zone_ops, NULL, passive_delay,
+					tz->polling_frequency * 100);
+	else
+		tz->thermal_zone = thermal_tripless_zone_device_register(
+					"acpitz", tz, &acpi_thermal_zone_ops, NULL);
+
 	if (IS_ERR(tz->thermal_zone))
 		return PTR_ERR(tz->thermal_zone);
 
@@ -823,10 +819,10 @@ static void acpi_thermal_free_thermal_zone(struct acpi_thermal *tz)
 
 static int acpi_thermal_add(struct acpi_device *device)
 {
+	struct thermal_trip trip_table[ACPI_THERMAL_MAX_NR_TRIPS] = { 0 };
 	struct acpi_thermal_trip *acpi_trip;
 	struct thermal_trip *trip;
 	struct acpi_thermal *tz;
-	unsigned int trip_count;
 	int crit_temp, hot_temp;
 	int passive_delay = 0;
 	int result;
@@ -848,21 +844,10 @@ static int acpi_thermal_add(struct acpi_device *device)
 	acpi_thermal_aml_dependency_fix(tz);
 
 	/* Get trip points [_CRT, _PSV, etc.] (required). */
-	trip_count = acpi_thermal_get_trip_points(tz);
+	acpi_thermal_get_trip_points(tz);
 
 	crit_temp = acpi_thermal_get_critical_trip(tz);
-	if (crit_temp != THERMAL_TEMP_INVALID)
-		trip_count++;
-
 	hot_temp = acpi_thermal_get_hot_trip(tz);
-	if (hot_temp != THERMAL_TEMP_INVALID)
-		trip_count++;
-
-	if (!trip_count) {
-		pr_warn(FW_BUG "No valid trip points!\n");
-		result = -ENODEV;
-		goto free_memory;
-	}
 
 	/* Get temperature [_TMP] (required). */
 	result = acpi_thermal_get_temperature(tz);
@@ -881,13 +866,7 @@ static int acpi_thermal_add(struct acpi_device *device)
 
 	acpi_thermal_guess_offset(tz, crit_temp);
 
-	trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL);
-	if (!trip) {
-		result = -ENOMEM;
-		goto free_memory;
-	}
-
-	tz->trip_table = trip;
+	trip = trip_table;
 
 	if (crit_temp != THERMAL_TEMP_INVALID) {
 		trip->type = THERMAL_TRIP_CRITICAL;
@@ -923,9 +902,14 @@ static int acpi_thermal_add(struct acpi_device *device)
 		trip++;
 	}
 
-	result = acpi_thermal_register_thermal_zone(tz, trip_count, passive_delay);
+	if (trip == trip_table)
+		pr_warn(FW_BUG "No valid trip points!\n");
+
+	result = acpi_thermal_register_thermal_zone(tz, trip_table,
+						    trip - trip_table,
+						    passive_delay);
 	if (result)
-		goto free_trips;
+		goto free_memory;
 
 	refcount_set(&tz->thermal_check_count, 3);
 	mutex_init(&tz->thermal_check_lock);
@@ -944,8 +928,6 @@ static int acpi_thermal_add(struct acpi_device *device)
 flush_wq:
 	flush_workqueue(acpi_thermal_pm_queue);
 	acpi_thermal_unregister_thermal_zone(tz);
-free_trips:
-	kfree(tz->trip_table);
 free_memory:
 	acpi_thermal_free_thermal_zone(tz);
 
@@ -966,7 +948,6 @@ static void acpi_thermal_remove(struct acpi_device *device)
 
 	flush_workqueue(acpi_thermal_pm_queue);
 	acpi_thermal_unregister_thermal_zone(tz);
-	kfree(tz->trip_table);
 	acpi_thermal_free_thermal_zone(tz);
 }
 
diff --git a/drivers/acpi/thermal_lib.c b/drivers/acpi/thermal_lib.c
index 4e0519ca97..6214d6ebe1 100644
--- a/drivers/acpi/thermal_lib.c
+++ b/drivers/acpi/thermal_lib.c
@@ -100,7 +100,7 @@ static int thermal_temp(int error, int temp_decik, int *ret_temp)
  */
 int thermal_acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp)
 {
-	int temp_decik;
+	int temp_decik = 0;
 	int ret = acpi_active_trip_temp(adev, id, &temp_decik);
 
 	return thermal_temp(ret, temp_decik, ret_temp);
@@ -119,7 +119,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_active_trip_temp);
  */
 int thermal_acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp)
 {
-	int temp_decik;
+	int temp_decik = 0;
 	int ret = acpi_passive_trip_temp(adev, &temp_decik);
 
 	return thermal_temp(ret, temp_decik, ret_temp);
@@ -139,7 +139,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_passive_trip_temp);
  */
 int thermal_acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp)
 {
-	int temp_decik;
+	int temp_decik = 0;
 	int ret = acpi_hot_trip_temp(adev, &temp_decik);
 
 	return thermal_temp(ret, temp_decik, ret_temp);
@@ -158,7 +158,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_hot_trip_temp);
  */
 int thermal_acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp)
 {
-	int temp_decik;
+	int temp_decik = 0;
 	int ret = acpi_critical_trip_temp(adev, &temp_decik);
 
 	return thermal_temp(ret, temp_decik, ret_temp);
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index abac5cc254..202234ba54 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -559,7 +559,7 @@ EXPORT_SYMBOL(acpi_evaluate_ost);
  *
  * Caller must free the returned buffer
  */
-static char *acpi_handle_path(acpi_handle handle)
+char *acpi_handle_path(acpi_handle handle)
 {
 	struct acpi_buffer buffer = {
 		.length = ACPI_ALLOCATE_BUFFER,
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
index 7d64e655f1..dd0b40b9bb 100644
--- a/drivers/acpi/x86/s2idle.c
+++ b/drivers/acpi/x86/s2idle.c
@@ -488,7 +488,19 @@ static int lps0_device_attach(struct acpi_device *adev,
 		rev_id = 1;
 		lps0_dsm_func_mask = validate_dsm(adev->handle,
 					ACPI_LPS0_DSM_UUID, rev_id, &lps0_dsm_guid);
-		lps0_dsm_func_mask_microsoft = -EINVAL;
+		if (lps0_dsm_func_mask > 0 && lps0_dsm_func_mask_microsoft > 0) {
+			unsigned int func_mask;
+
+			/*
+			 * Log a message if the _DSM function sets for two
+			 * different UUIDs overlap.
+			 */
+			func_mask = lps0_dsm_func_mask & lps0_dsm_func_mask_microsoft;
+			if (func_mask)
+				acpi_handle_info(adev->handle,
+						 "Duplicate LPS0 _DSM functions (mask: 0x%x)\n",
+						 func_mask);
+		}
 	}
 
 	if (lps0_dsm_func_mask < 0 && lps0_dsm_func_mask_microsoft < 0)
@@ -549,19 +561,22 @@ int acpi_s2idle_prepare_late(void)
 				lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
 
 	/* LPS0 entry */
-	if (lps0_dsm_func_mask > 0)
-		acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ?
-					ACPI_LPS0_ENTRY_AMD :
-					ACPI_LPS0_ENTRY,
+	if (lps0_dsm_func_mask > 0 && acpi_s2idle_vendor_amd())
+		acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY_AMD,
 					lps0_dsm_func_mask, lps0_dsm_guid);
+
 	if (lps0_dsm_func_mask_microsoft > 0) {
-		/* modern standby entry */
+		/* Modern Standby entry */
 		acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY,
 				lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
 		acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY,
 				lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
 	}
 
+	if (lps0_dsm_func_mask > 0 && !acpi_s2idle_vendor_amd())
+		acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY,
+					lps0_dsm_func_mask, lps0_dsm_guid);
+
 	list_for_each_entry(handler, &lps0_s2idle_devops_head, list_node) {
 		if (handler->prepare)
 			handler->prepare();
@@ -600,14 +615,14 @@ void acpi_s2idle_restore_early(void)
 					ACPI_LPS0_EXIT_AMD :
 					ACPI_LPS0_EXIT,
 					lps0_dsm_func_mask, lps0_dsm_guid);
-	if (lps0_dsm_func_mask_microsoft > 0)
+
+	if (lps0_dsm_func_mask_microsoft > 0) {
 		acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT,
 				lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
-
-	/* Modern standby exit */
-	if (lps0_dsm_func_mask_microsoft > 0)
+		/* Modern Standby exit */
 		acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_EXIT,
 				lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft);
+	}
 
 	/* Screen on */
 	if (lps0_dsm_func_mask_microsoft > 0)