3 files changed, 49 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index ebf6453d0e21..f1f644b58b15 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -73,6 +73,8 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width);
 
 acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width);
 
+acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count);
+
 /*
  * hwgpe - GPE support
  */
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index 132adff1e131..eb5d98757fdc 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -317,6 +317,23 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
 		return_ACPI_STATUS(AE_OK);
 	}
 
+	/* Validate the space_ID */
+
+	if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
+	    (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+		ACPI_ERROR((AE_INFO,
+			    "Unsupported address space: 0x%X", space_id));
+		return_ACPI_STATUS(AE_SUPPORT);
+	}
+
+	if (space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
+		status = acpi_hw_validate_io_block(address,
+						   ACPI_GPE_REGISTER_WIDTH,
+						   register_count);
+		if (ACPI_FAILURE(status))
+			return_ACPI_STATUS(status);
+	}
+
 	/* Allocate a new GPE block */
 
 	gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info));
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index 4d94861e6093..b2ca7dfd3fc9 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -292,3 +292,33 @@ acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
 
 	return (AE_OK);
 }
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_validate_io_block
+ *
+ * PARAMETERS:  Address             Address of I/O port/register blobk
+ *              bit_width           Number of bits (8,16,32) in each register
+ *              count               Number of registers in the block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Validates a block of I/O ports/registers.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count)
+{
+	acpi_status status;
+
+	while (count--) {
+		status = acpi_hw_validate_io_request((acpi_io_address)address,
+						     bit_width);
+		if (ACPI_FAILURE(status))
+			return_ACPI_STATUS(status);
+
+		address += ACPI_DIV_8(bit_width);
+	}
+
+	return_ACPI_STATUS(AE_OK);
+}