diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 04545725f187f..bda4e8e96969e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -50,7 +50,7 @@
 			CONFIG_ACPI_DEBUG must be enabled to produce any ACPI
 			debug output.  Bits in debug_layer correspond to a
 			_COMPONENT in an ACPI source file, e.g.,
-			    #define _COMPONENT ACPI_PCI_COMPONENT
+			    #define _COMPONENT ACPI_EVENTS
 			Bits in debug_level correspond to a level in
 			ACPI_DEBUG_PRINT statements, e.g.,
 			    ACPI_DEBUG_PRINT((ACPI_DB_INFO, ...
@@ -60,8 +60,6 @@
 
 			Enable processor driver info messages:
 			    acpi.debug_layer=0x20000000
-			Enable PCI/PCI interrupt routing info messages:
-			    acpi.debug_layer=0x400000
 			Enable AML "Debug" output, i.e., stores to the Debug
 			object while interpreting AML:
 			    acpi.debug_layer=0xffffffff acpi.debug_level=0x2
diff --git a/Documentation/firmware-guide/acpi/debug.rst b/Documentation/firmware-guide/acpi/debug.rst
index 03cd4e25fc451..1b34e12dc53b6 100644
--- a/Documentation/firmware-guide/acpi/debug.rst
+++ b/Documentation/firmware-guide/acpi/debug.rst
@@ -54,7 +54,6 @@ shows the supported mask values, currently these::
     ACPI_TOOLS                      0x00002000
     ACPI_SBS_COMPONENT              0x00100000
     ACPI_FAN_COMPONENT              0x00200000
-    ACPI_PCI_COMPONENT              0x00400000
     ACPI_CONTAINER_COMPONENT        0x01000000
     ACPI_SYSTEM_COMPONENT           0x02000000
     ACPI_MEMORY_DEVICE_COMPONENT    0x08000000
@@ -127,10 +126,6 @@ AML) during boot::
 
     acpi.debug_layer=0xffffffff acpi.debug_level=0x2
 
-Enable PCI and PCI interrupt routing debug messages::
-
-    acpi.debug_layer=0x400000 acpi.debug_level=0x4
-
 Enable all ACPI hardware-related messages::
 
     acpi.debug_layer=0x2 acpi.debug_level=0xffffffff
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 8baf7644a0d08..669f16787968d 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -54,7 +54,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
 
 	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 94d356fcc4839..e040080e9940f 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -17,7 +17,6 @@
  */
 #define ACPI_SBS_COMPONENT		0x00100000
 #define ACPI_FAN_COMPONENT		0x00200000
-#define ACPI_PCI_COMPONENT		0x00400000
 #define ACPI_CONTAINER_COMPONENT	0x01000000
 #define ACPI_SYSTEM_COMPONENT		0x02000000
 #define ACPI_MEMORY_DEVICE_COMPONENT	0x08000000