7 files changed, 6 insertions, 56 deletions

diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index fd8214caedee..a13a93dfc655 100644
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -106,8 +106,6 @@ EXPORT_SYMBOL(iowrite32_rep);
 
 void __iomem *ioport_map(unsigned long port, unsigned int len)
 {
-        if (!_IO_IS_VALID(port))
-                return NULL;
         return (void __iomem *) (port+pci_io_base);
 }
 
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 4c4449be81ce..18cc15468fd6 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -42,14 +42,6 @@
 unsigned long pci_probe_only = 1;
 int pci_assign_all_buses = 0;
 
-/*
- * legal IO pages under MAX_ISA_PORT.  This is to ensure we don't touch
- * devices we don't have access to.
- */
-unsigned long io_page_mask;
-
-EXPORT_SYMBOL(io_page_mask);
-
 #ifdef CONFIG_PPC_MULTIPLATFORM
 static void fixup_resource(struct resource *res, struct pci_dev *dev);
 static void do_bus_setup(struct pci_bus *bus);
@@ -1104,8 +1096,6 @@ void __init pci_setup_phb_io(struct pci_controller *hose, int primary)
                         pci_process_ISA_OF_ranges(isa_dn, hose->io_base_phys,
                                                 hose->io_base_virt);
                         of_node_put(isa_dn);
-                        /* Allow all IO */
-                        io_page_mask = -1;
                 }
         }
 
@@ -1232,27 +1222,13 @@ static void phbs_remap_io(void)
 static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
 {
         struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        unsigned long start, end, mask, offset;
+        unsigned long offset;
 
         if (res->flags & IORESOURCE_IO) {
                 offset = (unsigned long)hose->io_base_virt - pci_io_base;
 
-                start = res->start += offset;
-                end = res->end += offset;
-
-                /* Need to allow IO access to pages that are in the
-                   ISA range */
-                if (start < MAX_ISA_PORT) {
-                        if (end > MAX_ISA_PORT)
-                                end = MAX_ISA_PORT;
-
-                        start >>= PAGE_SHIFT;
-                        end >>= PAGE_SHIFT;
-
-                        /* get the range of pages for the map */
-                        mask = ((1 << (end+1)) - 1) ^ ((1 << start) - 1);
-                        io_page_mask |= mask;
-                }
+                res->start += offset;
+                res->end += offset;
         } else if (res->flags & IORESOURCE_MEM) {
                 res->start += hose->pci_mem_offset;
                 res->end += hose->pci_mem_offset;
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index a19833b880e4..5a61c6fdb33a 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -45,8 +45,6 @@
 #include "call_pci.h"
 #include "iommu.h"
 
-extern unsigned long io_page_mask;
-
 /*
  * Forward declares of prototypes.
  */
@@ -277,7 +275,6 @@ void iSeries_pcibios_init(void)
 {
         iomm_table_initialize();
         find_and_init_phbs();
-        io_page_mask = -1;
 }
 
 /*
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index 85d6c93659cc..9a4efc0c3b29 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -437,9 +437,6 @@ void __init maple_pci_init(void)
 
         /* Tell pci.c to not change any resource allocations.  */
         pci_probe_only = 1;
-        
-        /* Allow all IO */
-        io_page_mask = -1;
 }
 
 int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index f5d8d15d74fa..3212618e7909 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -1068,9 +1068,6 @@ void __init pmac_pci_init(void)
         /* Tell pci.c to not use the common resource allocation mechanism */
         pci_probe_only = 1;
 
-        /* Allow all IO */
-        io_page_mask = -1;
-
 #else /* CONFIG_PPC64 */
         init_p2pbridge();
         fixup_nec_usb2();
diff --git a/include/asm-powerpc/eeh.h b/include/asm-powerpc/eeh.h
index 868c7139dbff..2c3dc4a2b12a 100644
--- a/include/asm-powerpc/eeh.h
+++ b/include/asm-powerpc/eeh.h
@@ -293,8 +293,6 @@ static inline void eeh_memcpy_toio(volatile void __iomem *dest, const void *src,
 static inline u8 eeh_inb(unsigned long port)
 {
         u8 val;
-        if (!_IO_IS_VALID(port))
-                return ~0;
         val = in_8((u8 __iomem *)(port+pci_io_base));
         if (EEH_POSSIBLE_ERROR(val, u8))
                 return eeh_check_failure((void __iomem *)(port), val);
@@ -303,15 +301,12 @@ static inline u8 eeh_inb(unsigned long port)
 
 static inline void eeh_outb(u8 val, unsigned long port)
 {
-        if (_IO_IS_VALID(port))
-                out_8((u8 __iomem *)(port+pci_io_base), val);
+        out_8((u8 __iomem *)(port+pci_io_base), val);
 }
 
 static inline u16 eeh_inw(unsigned long port)
 {
         u16 val;
-        if (!_IO_IS_VALID(port))
-                return ~0;
         val = in_le16((u16 __iomem *)(port+pci_io_base));
         if (EEH_POSSIBLE_ERROR(val, u16))
                 return eeh_check_failure((void __iomem *)(port), val);
@@ -320,15 +315,12 @@ static inline u16 eeh_inw(unsigned long port)
 
 static inline void eeh_outw(u16 val, unsigned long port)
 {
-        if (_IO_IS_VALID(port))
-                out_le16((u16 __iomem *)(port+pci_io_base), val);
+        out_le16((u16 __iomem *)(port+pci_io_base), val);
 }
 
 static inline u32 eeh_inl(unsigned long port)
 {
         u32 val;
-        if (!_IO_IS_VALID(port))
-                return ~0;
         val = in_le32((u32 __iomem *)(port+pci_io_base));
         if (EEH_POSSIBLE_ERROR(val, u32))
                 return eeh_check_failure((void __iomem *)(port), val);
@@ -337,8 +329,7 @@ static inline u32 eeh_inl(unsigned long port)
 
 static inline void eeh_outl(u32 val, unsigned long port)
 {
-        if (_IO_IS_VALID(port))
-                out_le32((u32 __iomem *)(port+pci_io_base), val);
+        out_le32((u32 __iomem *)(port+pci_io_base), val);
 }
 
 /* in-string eeh macros */
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 68efbea379c9..4840fbf89c32 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -37,12 +37,6 @@
 
 extern unsigned long isa_io_base;
 extern unsigned long pci_io_base;
-extern unsigned long io_page_mask;
-
-#define MAX_ISA_PORT 0x10000
-
-#define _IO_IS_VALID(port) ((port) >= MAX_ISA_PORT || (1 << (port>>PAGE_SHIFT)) \
-                            & io_page_mask)
 
 #ifdef CONFIG_PPC_ISERIES
 /* __raw_* accessors aren't supported on iSeries */