diff --git a/Documentation/acpi/dsd/leds.txt b/Documentation/firmware-guide/acpi/dsd/leds.rst
similarity index 90%
rename from Documentation/acpi/dsd/leds.txt
rename to Documentation/firmware-guide/acpi/dsd/leds.rst
index cc58b1a574c5..946efe2b2936 100644
--- a/Documentation/acpi/dsd/leds.txt
+++ b/Documentation/firmware-guide/acpi/dsd/leds.rst
@@ -1,4 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: <isonum.txt>
+
+========================================
 Describing and referring to LEDs in ACPI
+========================================
 
 Individual LEDs are described by hierarchical data extension [6] nodes under the
 device node, the LED driver chip. The "reg" property in the LED specific nodes
@@ -25,8 +30,12 @@ entry shall contain the string "led@" followed by the number of the LED,
 followed by the referred object name. That object shall be named "LED" followed
 by the number of the LED.
 
-An ASL example of a camera sensor device and a LED driver device for two LEDs.
-Objects not relevant for LEDs or the references to them have been omitted.
+Example
+=======
+
+An ASL example of a camera sensor device and a LED driver device for two LEDs is
+show below. Objects not relevant for LEDs or the references to them have been
+omitted. ::
 
 	Device (LED)
 	{
@@ -71,12 +80,15 @@ Objects not relevant for LEDs or the references to them have been omitted.
 	}
 
 where
+::
 
 	LED	LED driver device
 	LED0	First LED
 	LED1	Second LED
-	SEN	Camera sensor device (or another device the LED is
-		related to)
+	SEN	Camera sensor device (or another device the LED is related to)
+
+References
+==========
 
 [1] Device tree. <URL:http://www.devicetree.org>, referenced 2019-02-21.
 
diff --git a/Documentation/firmware-guide/acpi/index.rst b/Documentation/firmware-guide/acpi/index.rst
index 90c90d42d9ad..ad3b5afdae77 100644
--- a/Documentation/firmware-guide/acpi/index.rst
+++ b/Documentation/firmware-guide/acpi/index.rst
@@ -10,6 +10,7 @@ ACPI Support
    namespace
    dsd/graph
    dsd/data-node-references
+   dsd/leds
    enumeration
    osi
    method-customizing
diff --git a/drivers/acpi/sbshc.h b/drivers/acpi/sbshc.h
index 06372a37df10..c3522bb82792 100644
--- a/drivers/acpi/sbshc.h
+++ b/drivers/acpi/sbshc.h
@@ -15,8 +15,6 @@ enum acpi_smb_protocol {
 	SMBUS_BLOCK_PROCESS_CALL = 0xd,
 };
 
-static const u8 SMBUS_PEC = 0x80;
-
 enum acpi_sbs_device_addr {
 	ACPI_SBS_CHARGER = 0x9,
 	ACPI_SBS_MANAGER = 0xa,
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 00f12a86ecbd..d831a61e0010 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -225,13 +225,9 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
 	if (!tz)
 		return -EINVAL;
 
-	if (!acpi_has_method(tz->device->handle, "_SCP")) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
+	if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,
+						    "_SCP", mode)))
 		return -ENODEV;
-	} else if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,
-							   "_SCP", mode))) {
-		return -ENODEV;
-	}
 
 	return 0;
 }
@@ -463,8 +459,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 			break;
 	}
 
-	if ((flag & ACPI_TRIPS_DEVICES)
-	    && acpi_has_method(tz->device->handle, "_TZD")) {
+	if (flag & ACPI_TRIPS_DEVICES) {
 		memset(&devices, 0, sizeof(devices));
 		status = acpi_evaluate_reference(tz->device->handle, "_TZD",
 						NULL, &devices);