Merge branches 'acpi-video', 'acpi-battery', 'acpi-spcr' and 'acpi-misc'

* acpi-video:
  ACPI / video: Add force_none quirk for Dell OptiPlex 9020M

* acpi-battery:
  ACPI: make device_attribute const

* acpi-spcr:
  ACPI: SPCR: work around clock issue on xgene UART
  ACPI: SPCR: extend XGENE 8250 workaround to m400

* acpi-misc:
  ACPI / dock: constify attribute_group structure
  MAINTAINERS: Add Tony and Boris as ACPI/APEI reviewers
  ACPI / lpat: Fix typos in comments and kerneldoc style
  MAINTAINERS: device property: ACPI: add fwnode.h

MAINTAINERS

@@ -301,6 +301,7 @@ S:	Supported
 F:	drivers/acpi/
 F:	drivers/pnp/pnpacpi/
 F:	include/linux/acpi.h
+F:	include/linux/fwnode.h
 F:	include/acpi/
 F:	Documentation/acpi/
 F:	Documentation/ABI/testing/sysfs-bus-acpi
@@ -310,6 +311,14 @@ F:	drivers/pci/*/*acpi*
 F:	drivers/pci/*/*/*acpi*
 F:	tools/power/acpi/
 
+ACPI APEI
+M:	"Rafael J. Wysocki" <rjw@rjwysocki.net>
+M:	Len Brown <lenb@kernel.org>
+L:	linux-acpi@vger.kernel.org
+R:	Tony Luck <tony.luck@intel.com>
+R:	Borislav Petkov <bp@alien8.de>
+F:	drivers/acpi/apei/
+
 ACPI COMPONENT ARCHITECTURE (ACPICA)
 M:	Robert Moore <robert.moore@intel.com>
 M:	Lv Zheng <lv.zheng@intel.com>

drivers/acpi/acpi_lpat.c

@@ -25,7 +25,7 @@
  * @raw: the raw value, used as a key to get the temerature from the
  *       above mapping table
  *
- * A positive converted temperarure value will be returned on success,
+ * A positive converted temperature value will be returned on success,
  * a negative errno will be returned in error cases.
  */
 int acpi_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table,
@@ -55,11 +55,11 @@ EXPORT_SYMBOL_GPL(acpi_lpat_raw_to_temp);
  * acpi_lpat_temp_to_raw(): Return raw value from temperature through
  * LPAT conversion table
  *
- * @lpat: the temperature_raw mapping table
+ * @lpat_table: the temperature_raw mapping table
  * @temp: the temperature, used as a key to get the raw value from the
  *        above mapping table
  *
- * A positive converted temperature value will be returned on success,
+ * The raw value will be returned on success,
  * a negative errno will be returned in error cases.
  */
 int acpi_lpat_temp_to_raw(struct acpi_lpat_conversion_table *lpat_table,

drivers/acpi/battery.c

@@ -620,7 +620,7 @@ static ssize_t acpi_battery_alarm_store(struct device *dev,
 	return count;
 }
 
-static struct device_attribute alarm_attr = {
+static const struct device_attribute alarm_attr = {
 	.attr = {.name = "alarm", .mode = 0644},
 	.show = acpi_battery_alarm_show,
 	.store = acpi_battery_alarm_store,

drivers/acpi/dock.c

@@ -585,7 +585,7 @@ static struct attribute *dock_attributes[] = {
 	NULL
 };
 
-static struct attribute_group dock_attribute_group = {
+static const struct attribute_group dock_attribute_group = {
 	.attrs = dock_attributes
 };
 

drivers/acpi/sbs.c

@@ -474,7 +474,7 @@ static ssize_t acpi_battery_alarm_store(struct device *dev,
 	return count;
 }
 
-static struct device_attribute alarm_attr = {
+static const struct device_attribute alarm_attr = {
 	.attr = {.name = "alarm", .mode = 0644},
 	.show = acpi_battery_alarm_show,
 	.store = acpi_battery_alarm_store,

drivers/acpi/spcr.c

@@ -53,17 +53,24 @@ static bool qdf2400_erratum_44_present(struct acpi_table_header *h)
  */
 static bool xgene_8250_erratum_present(struct acpi_table_spcr *tb)
 {
+	bool xgene_8250 = false;
+
 	if (tb->interface_type != ACPI_DBG2_16550_COMPATIBLE)
 		return false;
 
-	if (memcmp(tb->header.oem_id, "APMC0D", ACPI_OEM_ID_SIZE))
+	if (memcmp(tb->header.oem_id, "APMC0D", ACPI_OEM_ID_SIZE) &&
+	    memcmp(tb->header.oem_id, "HPE   ", ACPI_OEM_ID_SIZE))
 		return false;
 
 	if (!memcmp(tb->header.oem_table_id, "XGENESPC",
 	    ACPI_OEM_TABLE_ID_SIZE) && tb->header.oem_revision == 0)
-		return true;
+		xgene_8250 = true;
 
-	return false;
+	if (!memcmp(tb->header.oem_table_id, "ProLiant",
+	    ACPI_OEM_TABLE_ID_SIZE) && tb->header.oem_revision == 1)
+		xgene_8250 = true;
+
+	return xgene_8250;
 }
 
 /**
@@ -182,11 +189,19 @@ int __init parse_spcr(bool earlycon)
 			uart = "qdf2400_e44";
 	}
 
-	if (xgene_8250_erratum_present(table))
+	if (xgene_8250_erratum_present(table)) {
 		iotype = "mmio32";
 
-	snprintf(opts, sizeof(opts), "%s,%s,0x%llx,%d", uart, iotype,
-		 table->serial_port.address, baud_rate);
+		/* for xgene v1 and v2 we don't know the clock rate of the
+		 * UART so don't attempt to change to the baud rate state
+		 * in the table because driver cannot calculate the dividers
+		 */
+		snprintf(opts, sizeof(opts), "%s,%s,0x%llx", uart, iotype,
+			 table->serial_port.address);
+	} else {
+		snprintf(opts, sizeof(opts), "%s,%s,0x%llx,%d", uart, iotype,
+			 table->serial_port.address, baud_rate);
+	}
 
 	pr_info("console: %s\n", opts);
 

drivers/acpi/video_detect.c

@@ -103,6 +103,12 @@ static int video_detect_force_native(const struct dmi_system_id *d)
 	return 0;
 }
 
+static int video_detect_force_none(const struct dmi_system_id *d)
+{
+	acpi_backlight_dmi = acpi_backlight_none;
+	return 0;
+}
+
 static const struct dmi_system_id video_detect_dmi_table[] = {
 	/* On Samsung X360, the BIOS will set a flag (VDRV) if generic
 	 * ACPI backlight device is used. This flag will definitively break
@@ -313,6 +319,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
 		},
 	},
+	{
+	 .callback = video_detect_force_none,
+	 .ident = "Dell OptiPlex 9020M",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"),
+		},
+	},
 	{ },
 };