1 files changed, 13 insertions, 22 deletions

diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c
index df140962bb0f..6851abaf5524 100644
--- a/arch/arm/mach-ixp2000/core.c
+++ b/arch/arm/mach-ixp2000/core.c
@@ -84,63 +84,54 @@ static struct map_desc ixp2000_io_desc[] __initdata = {
                 .virtual        = IXP2000_CAP_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_CAP_PHYS_BASE),
                 .length         = IXP2000_CAP_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_INTCTL_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE),
                 .length         = IXP2000_INTCTL_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_PCI_CREG_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE),
                 .length         = IXP2000_PCI_CREG_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_PCI_CSR_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE),
                 .length         = IXP2000_PCI_CSR_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_MSF_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_MSF_PHYS_BASE),
                 .length         = IXP2000_MSF_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_PCI_IO_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE),
                 .length         = IXP2000_PCI_IO_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_PCI_CFG0_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE),
                 .length         = IXP2000_PCI_CFG0_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }, {
                 .virtual        = IXP2000_PCI_CFG1_VIRT_BASE,
                 .pfn            = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE),
                 .length         = IXP2000_PCI_CFG1_SIZE,
-                .type           = MT_DEVICE
+                .type           = MT_IXP2000_DEVICE,
         }
 };
 
 void __init ixp2000_map_io(void)
 {
-        extern unsigned int processor_id;
-
         /*
-         * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE for
-         * tweaking the PMDs so XCB=101. On IXP2800s we use the normal
-         * PMD flags.
+         * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that
+         * XCB=101 (to avoid triggering erratum #66), and given that
+         * this mode speeds up I/O accesses and we have write buffer
+         * flushes in the right places anyway, it doesn't hurt to use
+         * XCB=101 for all IXP2000s.
          */
-        if ((processor_id & 0xfffffff0) == 0x69054190) {
-                int i;
-
-                printk(KERN_INFO "Enabling IXP2400 erratum #66 workaround\n");
-
-                for(i=0;i<ARRAY_SIZE(ixp2000_io_desc);i++)
-                        ixp2000_io_desc[i].type = MT_IXP2000_DEVICE;
-        }
-
         iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
 
         /* Set slowport to 8-bit mode.  */