PCI: parisc: use generic pci_enable_resources()

Use the generic pci_enable_resources() instead of the arch-specific code.

Unlike this arch-specific code, the generic version:
    - checks PCI_NUM_RESOURCES (11), not DEVICE_COUNT_RESOURCE (12), resources
    - skips resources that have neither IORESOURCE_IO nor IORESOURCE_MEM set
    - skips ROM resources unless IORESOURCE_ROM_ENABLE is set
    - checks for resource collisions with "!r->parent"

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 13 insertions, 17 deletions

diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c
index 507d0ac99f66..6936386c9861 100644
--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -287,23 +287,15 @@ void pcibios_align_resource(void *data, struct resource *res,
  */
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
-        u16 cmd;
-        int idx;
+        int err;
+        u16 cmd, old_cmd;
 
-        pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
-        for (idx = 0; idx < DEVICE_COUNT_RESOURCE; idx++) {
-                struct resource *r = &dev->resource[idx];
+        err = pci_enable_resources(dev, mask);
+        if (err < 0)
+                return err;
 
-                /* only setup requested resources */
-                if (!(mask & (1<<idx)))
-                        continue;
-
-                if (r->flags & IORESOURCE_IO)
-                        cmd |= PCI_COMMAND_IO;
-                if (r->flags & IORESOURCE_MEM)
-                        cmd |= PCI_COMMAND_MEMORY;
-        }
+        pci_read_config_word(dev, PCI_COMMAND, &cmd);
+        old_cmd = cmd;
 
         cmd |= (PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
 
@@ -312,8 +304,12 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
         if (dev->bus->bridge_ctl & PCI_BRIDGE_CTL_FAST_BACK)
                 cmd |= PCI_COMMAND_FAST_BACK;
 #endif
-        DBGC("PCIBIOS: Enabling device %s cmd 0x%04x\n", pci_name(dev), cmd);
-        pci_write_config_word(dev, PCI_COMMAND, cmd);
+
+        if (cmd != old_cmd) {
+                dev_info(&dev->dev, "enabling SERR and PARITY (%04x -> %04x)\n",
+                        old_cmd, cmd);
+                pci_write_config_word(dev, PCI_COMMAND, cmd);
+        }
         return 0;
 }