[SPARC64] isa: Convert to use pci_device_to_OF_node().

Also, do not try to compute resources by hand, instead use
the pre-computed ones in the of_device.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 32 deletions

diff --git a/arch/sparc64/kernel/isa.c b/arch/sparc64/kernel/isa.c
index 791eeb7e3873..6a6882e57ff2 100644
--- a/arch/sparc64/kernel/isa.c
+++ b/arch/sparc64/kernel/isa.c
@@ -24,27 +24,9 @@ static void __init report_dev(struct sparc_isa_device *isa_dev, int child)
 
 static void __init isa_dev_get_resource(struct sparc_isa_device *isa_dev)
 {
-        const struct linux_prom_registers *pregs;
-        unsigned long base, len;
-        int prop_len;
-
-        pregs = of_get_property(isa_dev->prom_node, "reg", &prop_len);
-        if (!pregs)
-                return;
-
-        /* Only the first one is interesting. */
-        len = pregs[0].reg_size;
-        base = (((unsigned long)pregs[0].which_io << 32) |
-                (unsigned long)pregs[0].phys_addr);
-        base += isa_dev->bus->parent->io_space.start;
-
-        isa_dev->resource.start = base;
-        isa_dev->resource.end   = (base + len - 1UL);
-        isa_dev->resource.flags = IORESOURCE_IO;
-        isa_dev->resource.name  = isa_dev->prom_node->name;
+        struct of_device *op = of_find_device_by_node(isa_dev->prom_node);
 
-        request_resource(&isa_dev->bus->parent->io_space,
-                         &isa_dev->resource);
+        memcpy(&isa_dev->resource, &op->resource[0], sizeof(struct resource));
 }
 
 static void __init isa_dev_get_irq(struct sparc_isa_device *isa_dev)
@@ -158,19 +140,10 @@ void __init isa_init(void)
 
         pdev = NULL;
         while ((pdev = pci_get_device(vendor, device, pdev)) != NULL) {
-                struct pcidev_cookie *pdev_cookie;
-                struct pci_pbm_info *pbm;
                 struct sparc_isa_bridge *isa_br;
                 struct device_node *dp;
 
-                pdev_cookie = pdev->sysdata;
-                if (!pdev_cookie) {
-                        printk("ISA: Warning, ISA bridge ignored due to "
-                               "lack of OBP data.\n");
-                        continue;
-                }
-                pbm = pdev_cookie->pbm;
-                dp = pdev_cookie->prom_node;
+                dp = pci_device_to_OF_node(pdev);
 
                 isa_br = kzalloc(sizeof(*isa_br), GFP_KERNEL);
                 if (!isa_br) {
@@ -195,10 +168,9 @@ void __init isa_init(void)
                 isa_br->next = isa_chain;
                 isa_chain = isa_br;
 
-                isa_br->parent = pbm;
                 isa_br->self = pdev;
                 isa_br->index = index++;
-                isa_br->prom_node = pdev_cookie->prom_node;
+                isa_br->prom_node = dp;
 
                 printk("isa%d:", isa_br->index);