[PARISC] Fix infinite loop in /proc/iomem
[sfrench/cifs-2.6.git] / drivers / parisc / lba_pci.c
index 5b86ee5c1eeb7437d4886aef39735fe6e7aab5b2..5eace9e66e14c9bd86c15414b186061f6f345ab4 100644 (file)
@@ -556,44 +556,6 @@ lba_bios_init(void)
 
 #ifdef CONFIG_64BIT
 
-/*
-** Determine if a device is already configured.
-** If so, reserve it resources.
-**
-** Read PCI cfg command register and see if I/O or MMIO is enabled.
-** PAT has to enable the devices it's using.
-**
-** Note: resources are fixed up before we try to claim them.
-*/
-static void
-lba_claim_dev_resources(struct pci_dev *dev)
-{
-       u16 cmd;
-       int i, srch_flags;
-
-       (void) pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
-       srch_flags  = (cmd & PCI_COMMAND_IO) ? IORESOURCE_IO : 0;
-       if (cmd & PCI_COMMAND_MEMORY)
-               srch_flags |= IORESOURCE_MEM;
-
-       if (!srch_flags)
-               return;
-
-       for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
-               if (dev->resource[i].flags & srch_flags) {
-                       pci_claim_resource(dev, i);
-                       DBG("   claimed %s %d [%lx,%lx]/%lx\n",
-                               pci_name(dev), i,
-                               dev->resource[i].start,
-                               dev->resource[i].end,
-                               dev->resource[i].flags
-                               );
-               }
-       }
-}
-
-
 /*
  * truncate_pat_collision:  Deal with overlaps or outright collisions
  *                     between PAT PDC reported ranges.
@@ -653,7 +615,6 @@ truncate_pat_collision(struct resource *root, struct resource *new)
 }
 
 #else
-#define lba_claim_dev_resources(dev) do { } while (0)
 #define truncate_pat_collision(r,n)  (0)
 #endif
 
@@ -684,8 +645,12 @@ lba_fixup_bus(struct pci_bus *bus)
        ** pci_alloc_primary_bus() mangles this.
        */
        if (bus->self) {
+               int i;
                /* PCI-PCI Bridge */
                pci_read_bridge_bases(bus);
+               for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
+                       pci_claim_resource(bus->self, i);
+               }
        } else {
                /* Host-PCI Bridge */
                int err, i;
@@ -803,6 +768,9 @@ lba_fixup_bus(struct pci_bus *bus)
                                DBG("lba_fixup_bus() WTF? 0x%lx [%lx/%lx] XXX",
                                        res->flags, res->start, res->end);
                        }
+                       if ((i != PCI_ROM_RESOURCE) ||
+                           (res->flags & IORESOURCE_ROM_ENABLE))
+                               pci_claim_resource(dev, i);
                }
 
 #ifdef FBB_SUPPORT
@@ -814,11 +782,6 @@ lba_fixup_bus(struct pci_bus *bus)
                bus->bridge_ctl &= ~(status & PCI_STATUS_FAST_BACK);
 #endif
 
-               if (is_pdc_pat()) {
-                       /* Claim resources for PDC's devices */
-                       lba_claim_dev_resources(dev);
-               }
-
                 /*
                ** P2PB's have no IRQs. ignore them.
                */