diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index d870fb2..e6f4734 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -35,6 +35,7 @@
 #include <linux/kmod.h>
 #include <linux/delay.h>
 #include <linux/workqueue.h>
+#include <linux/ioport.h>
 #include <linux/nmi.h>
 #include <acpi/acpi.h>
 #include <asm/io.h>
@@ -362,6 +363,10 @@ EXPORT_SYMBOL(acpi_os_read_port);
 
 acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
 {
+	if (__check_region(&ioport_resource, port, width/8))
+		printk (KERN_INFO "ACPI access to allocated ioport %lx\n", 
+			port);
+
 	switch (width) {
 	case 8:
 		outb(value, port);
@@ -415,6 +420,10 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
 {
 	void __iomem *virt_addr;
 
+	if (__check_region(&iomem_resource, phys_addr, width/8))
+		printk (KERN_INFO "ACPI access to allocated iomem %lx\n", 
+			phys_addr);
+
 	virt_addr = ioremap(phys_addr, width);
 
 	switch (width) {