diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 523d6c5..291e6cd 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1271,15 +1271,13 @@ static inline const char *e820_type_to_string(int e820_type)
 /*
  * Mark e820 reserved areas as busy for the resource manager.
  */
-struct resource __initdata *e820_res;
 void __init e820_reserve_resources(void)
 {
 	int i;
-	u64 end;
 	struct resource *res;
+	u64 end;
 
 	res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
-	e820_res = res;
 	for (i = 0; i < e820.nr_map; i++) {
 		end = e820.map[i].addr + e820.map[i].size - 1;
 #ifndef CONFIG_RESOURCES_64BIT
@@ -1293,8 +1291,7 @@ void __init e820_reserve_resources(void)
 		res->end = end;
 
 		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-		if (e820.map[i].type != E820_RESERVED || res->start < (1ULL<<20))
-			insert_resource(&iomem_resource, res);
+		insert_resource(&iomem_resource, res);
 		res++;
 	}
 
@@ -1306,19 +1303,6 @@ void __init e820_reserve_resources(void)
 	}
 }
 
-void __init e820_reserve_resources_late(void)
-{
-	int i;
-	struct resource *res;
-
-	res = e820_res;
-	for (i = 0; i < e820.nr_map; i++) {
-		if (e820.map[i].type == E820_RESERVED && res->start >= (1ULL<<20))
-			insert_resource(&iomem_resource, res);
-		res++;
-	}
-}
-
 char *__init default_machine_specific_memory_setup(void)
 {
 	char *who = "BIOS-e820";
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 718fd77..5807d1b 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -31,12 +31,8 @@
 #include <linux/ioport.h>
 #include <linux/errno.h>
 #include <linux/bootmem.h>
-#include <linux/acpi.h>
 
 #include <asm/pat.h>
-#include <asm/hpet.h>
-#include <asm/io_apic.h>
-#include <asm/e820.h>
 
 #include "pci.h"
 
@@ -81,77 +77,6 @@ pcibios_align_resource(void *data, struct resource *res,
 }
 EXPORT_SYMBOL(pcibios_align_resource);
 
-static int check_res_with_valid(struct pci_dev *dev, struct resource *res)
-{
-	unsigned long base;
-	unsigned long size;
-	int i;
-
-	base = res->start;
-	size = (res->start == 0 && res->end == res->start) ? 0 :
-		 (res->end - res->start + 1);
-
-	if (!base || !size)
-		return 0;
-
-#ifdef CONFIG_HPET_TIMER
-	/* for hpet */
-	if (base == hpet_address && (res->flags & IORESOURCE_MEM)) {
-		dev_info(&dev->dev, "BAR has HPET at %08lx-%08lx\n",
-				 base, base + size - 1);
-		return 1;
-	}
-#endif
-
-#ifdef CONFIG_X86_IO_APIC
-	for (i = 0; i < nr_ioapics; i++) {
-		unsigned long ioapic_phys = mp_ioapics[i].mp_apicaddr;
-
-		if (base == ioapic_phys && (res->flags & IORESOURCE_MEM)) {
-			dev_info(&dev->dev, "BAR has ioapic at %08lx-%08lx\n",
-					 base, base + size - 1);
-			return 1;
-		}
-	}
-#endif
-
-#ifdef CONFIG_PCI_MMCONFIG
-	for (i = 0; i < pci_mmcfg_config_num; i++) {
-		unsigned long addr;
-
-		addr = pci_mmcfg_config[i].address;
-		if (base == addr && (res->flags & IORESOURCE_MEM)) {
-			dev_info(&dev->dev, "BAR has MMCONFIG at %08lx-%08lx\n",
-					 base, base + size - 1);
-			return 1;
-		}
-	}
-#endif
-
-	return 0;
-}
-
-static int check_platform(struct pci_dev *dev, struct resource *res)
-{
-	struct resource *root = NULL;
-
-	/*
-	 * forcibly insert it into the
-	 * resource tree
-	 */
-	if (res->flags & IORESOURCE_MEM)
-		root = &iomem_resource;
-	else if (res->flags & IORESOURCE_IO)
-		root = &ioport_resource;
-
-	if (root && check_res_with_valid(dev, res)) {
-		insert_resource(root, res);
-
-		return 1;
-	}
-
-	return 0;
-}
 /*
  *  Handle resources of PCI devices.  If the world were perfect, we could
  *  just allocate all the resource regions and do nothing more.  It isn't.
@@ -203,8 +128,6 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 				pr = pci_find_parent_resource(dev, r);
 				if (!r->start || !pr ||
 				    request_resource(pr, r) < 0) {
-					if (check_platform(dev, r))
-						continue;
 					dev_err(&dev->dev, "BAR %d: can't "
 						"allocate resource\n", idx);
 					/*
@@ -248,8 +171,6 @@ static void __init pcibios_allocate_resources(int pass)
 					r->flags, disabled, pass);
 				pr = pci_find_parent_resource(dev, r);
 				if (!pr || request_resource(pr, r) < 0) {
-					if (check_platform(dev, r))
-						continue;
 					dev_err(&dev->dev, "BAR %d: can't "
 						"allocate resource\n", idx);
 					/* We'll assign a new address later */
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 5abbdec..ca433c3 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -122,7 +122,6 @@ extern void e820_register_active_regions(int nid, unsigned long start_pfn,
 extern u64 e820_hole_size(u64 start, u64 end);
 extern void finish_e820_parsing(void);
 extern void e820_reserve_resources(void);
-extern void e820_reserve_resources_late(void);
 extern void setup_memory_map(void);
 extern char *default_machine_specific_memory_setup(void);
 extern char *machine_specific_memory_setup(void);