Merge branches 'acpi-scan', 'acpi-resource', 'acpi-apei', 'acpi-extlog' and 'acpi-docs'

Merge assorted ACPI fixes for 6.1-rc2:

 - Fix resource list walk in acpi_dma_get_range() (Robin Murphy).

 - Add IRQ override quirk for LENOVO IdeaPad and extend the IRQ
   override warning message (Jiri Slaby).

 - Fix integer overflow in ghes_estatus_pool_init() (Ashish Kalra).

 - Fix multiple error records handling in one of the ACPI extlog driver
   code paths (Tony Luck).

 - Prune DSDT override documentation from index after dropping it (Bagas
   Sanjaya).

* acpi-scan:
  ACPI: scan: Fix DMA range assignment

* acpi-resource:
  ACPI: resource: note more about IRQ override
  ACPI: resource: do IRQ override on LENOVO IdeaPad

* acpi-apei:
  ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init()

* acpi-extlog:
  ACPI: extlog: Handle multiple records

* acpi-docs:
  Documentation: ACPI: Prune DSDT override documentation from index

Documentation/admin-guide/acpi/index.rst

@@ -9,7 +9,6 @@ the Linux ACPI support.
    :maxdepth: 1
 
    initrd_table_override
-   dsdt-override
    ssdt-overlays
    cppc_sysfs
    fan_performance_states

drivers/acpi/acpi_extlog.c

@@ -12,6 +12,7 @@
 #include <linux/ratelimit.h>
 #include <linux/edac.h>
 #include <linux/ras.h>
+#include <acpi/ghes.h>
 #include <asm/cpu.h>
 #include <asm/mce.h>
 
@@ -138,8 +139,8 @@ static int extlog_print(struct notifier_block *nb, unsigned long val,
 	int	cpu = mce->extcpu;
 	struct acpi_hest_generic_status *estatus, *tmp;
 	struct acpi_hest_generic_data *gdata;
-	const guid_t *fru_id = &guid_null;
+	const guid_t *fru_id;
-	char *fru_text = "";
+	char *fru_text;
 	guid_t *sec_type;
 	static u32 err_seq;
 
@@ -160,18 +161,24 @@ static int extlog_print(struct notifier_block *nb, unsigned long val,
 
 	/* log event via trace */
 	err_seq++;
-	gdata = (struct acpi_hest_generic_data *)(tmp + 1);
+	apei_estatus_for_each_section(tmp, gdata) {
 		if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
 			fru_id = (guid_t *)gdata->fru_id;
+		else
+			fru_id = &guid_null;
 		if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
 			fru_text = gdata->fru_text;
+		else
+			fru_text = "";
 		sec_type = (guid_t *)gdata->section_type;
 		if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
 			struct cper_sec_mem_err *mem = (void *)(gdata + 1);
+
 			if (gdata->error_data_length >= sizeof(*mem))
 				trace_extlog_mem_event(mem, err_seq, fru_id, fru_text,
 						       (u8)gdata->error_severity);
 		}
+	}
 
 out:
 	mce->kflags |= MCE_HANDLED_EXTLOG;

drivers/acpi/apei/ghes.c

@@ -163,7 +163,7 @@ static void ghes_unmap(void __iomem *vaddr, enum fixed_addresses fixmap_idx)
 	clear_fixmap(fixmap_idx);
 }
 
-int ghes_estatus_pool_init(int num_ghes)
+int ghes_estatus_pool_init(unsigned int num_ghes)
 {
 	unsigned long addr, len;
 	int rc;

drivers/acpi/resource.c

@@ -428,17 +428,31 @@ static const struct dmi_system_id asus_laptop[] = {
 	{ }
 };
 
+static const struct dmi_system_id lenovo_82ra[] = {
+	{
+		.ident = "LENOVO IdeaPad Flex 5 16ALC7",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "82RA"),
+		},
+	},
+	{ }
+};
+
 struct irq_override_cmp {
 	const struct dmi_system_id *system;
 	unsigned char irq;
 	unsigned char triggering;
 	unsigned char polarity;
 	unsigned char shareable;
+	bool override;
 };
 
-static const struct irq_override_cmp skip_override_table[] = {
+static const struct irq_override_cmp override_table[] = {
-	{ medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
+	{ medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
-	{ asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
+	{ asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
+	{ lenovo_82ra, 6, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true },
+	{ lenovo_82ra, 10, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true },
 };
 
 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
@@ -446,6 +460,17 @@ static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
 {
 	int i;
 
+	for (i = 0; i < ARRAY_SIZE(override_table); i++) {
+		const struct irq_override_cmp *entry = &override_table[i];
+
+		if (dmi_check_system(entry->system) &&
+		    entry->irq == gsi &&
+		    entry->triggering == triggering &&
+		    entry->polarity == polarity &&
+		    entry->shareable == shareable)
+			return entry->override;
+	}
+
 #ifdef CONFIG_X86
 	/*
 	 * IRQ override isn't needed on modern AMD Zen systems and
@@ -456,17 +481,6 @@ static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
 		return false;
 #endif
 
-	for (i = 0; i < ARRAY_SIZE(skip_override_table); i++) {
-		const struct irq_override_cmp *entry = &skip_override_table[i];
-
-		if (dmi_check_system(entry->system) &&
-		    entry->irq == gsi &&
-		    entry->triggering == triggering &&
-		    entry->polarity == polarity &&
-		    entry->shareable == shareable)
-			return false;
-	}
-
 	return true;
 }
 
@@ -498,8 +512,11 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
 		u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 
 		if (triggering != trig || polarity != pol) {
-			pr_warn("ACPI: IRQ %d override to %s, %s\n", gsi,
+			pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
-				t ? "level" : "edge", p ? "low" : "high");
+				t ? "level" : "edge",
+				trig == triggering ? "" : "(!)",
+				p ? "low" : "high",
+				pol == polarity ? "" : "(!)");
 			triggering = trig;
 			polarity = pol;
 		}

drivers/acpi/scan.c

@@ -1509,9 +1509,12 @@ int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map)
 			goto out;
 		}
 
+		*map = r;
+
 		list_for_each_entry(rentry, &list, node) {
 			if (rentry->res->start >= rentry->res->end) {
-				kfree(r);
+				kfree(*map);
+				*map = NULL;
 				ret = -EINVAL;
 				dev_dbg(dma_dev, "Invalid DMA regions configuration\n");
 				goto out;
@@ -1523,8 +1526,6 @@ int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map)
 			r->offset = rentry->offset;
 			r++;
 		}
-
-		*map = r;
 	}
  out:
 	acpi_dev_free_resource_list(&list);

include/acpi/ghes.h

@@ -71,7 +71,7 @@ int ghes_register_vendor_record_notifier(struct notifier_block *nb);
 void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
 #endif
 
-int ghes_estatus_pool_init(int num_ghes);
+int ghes_estatus_pool_init(unsigned int num_ghes);
 
 /* From drivers/edac/ghes_edac.c */