1 files changed, 10 insertions, 41 deletions

diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 376dc7873447..d35078ea1446 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -20,22 +20,13 @@
 #include <asm/hpet.h>
 #include <asm/apic.h>
 #include <asm/pci_x86.h>
+#include <asm/setup.h>
 
 __initdata u64 initial_dtb;
 char __initdata cmd_line[COMMAND_LINE_SIZE];
 
 int __initdata of_ioapic;
 
-unsigned long pci_address_to_pio(phys_addr_t address)
-{
-        /*
-         * The ioport address can be directly used by inX / outX
-         */
-        BUG_ON(address >= (1 << 16));
-        return (unsigned long)address;
-}
-EXPORT_SYMBOL_GPL(pci_address_to_pio);
-
 void __init early_init_dt_scan_chosen_arch(unsigned long node)
 {
         BUG();
@@ -51,15 +42,6 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
         return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
-{
-        initrd_start = (unsigned long)__va(start);
-        initrd_end = (unsigned long)__va(end);
-        initrd_below_start_ok = 1;
-}
-#endif
-
 void __init add_dtb(u64 data)
 {
         initial_dtb = data + offsetof(struct setup_data, data);
@@ -105,7 +87,6 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
 
 static int x86_of_pci_irq_enable(struct pci_dev *dev)
 {
-        struct of_irq oirq;
         u32 virq;
         int ret;
         u8 pin;
@@ -116,12 +97,7 @@ static int x86_of_pci_irq_enable(struct pci_dev *dev)
         if (!pin)
                 return 0;
 
-        ret = of_irq_map_pci(dev, &oirq);
-        if (ret)
-                return ret;
-
-        virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
-                        oirq.size);
+        virq = of_irq_parse_and_map_pci(dev, 0, 0);
         if (virq == 0)
                 return -EINVAL;
         dev->irq = virq;
@@ -230,7 +206,7 @@ static void __init dtb_apic_setup(void)
 static void __init x86_flattree_get_config(void)
 {
         u32 size, map_len;
-        void *new_dtb;
+        struct boot_param_header *dt;
 
         if (!initial_dtb)
                 return;
@@ -238,24 +214,17 @@ static void __init x86_flattree_get_config(void)
         map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK),
                         (u64)sizeof(struct boot_param_header));
 
-        initial_boot_params = early_memremap(initial_dtb, map_len);
-        size = be32_to_cpu(initial_boot_params->totalsize);
+        dt = early_memremap(initial_dtb, map_len);
+        size = be32_to_cpu(dt->totalsize);
         if (map_len < size) {
-                early_iounmap(initial_boot_params, map_len);
-                initial_boot_params = early_memremap(initial_dtb, size);
+                early_iounmap(dt, map_len);
+                dt = early_memremap(initial_dtb, size);
                 map_len = size;
         }
 
-        new_dtb = alloc_bootmem(size);
-        memcpy(new_dtb, initial_boot_params, size);
-        early_iounmap(initial_boot_params, map_len);
-
-        initial_boot_params = new_dtb;
-
-        /* root level address cells */
-        of_scan_flat_dt(early_init_dt_scan_root, NULL);
-
-        unflatten_device_tree();
+        initial_boot_params = dt;
+        unflatten_and_copy_device_tree();
+        early_iounmap(dt, map_len);
 }
 #else
 static inline void x86_flattree_get_config(void) { }