PNP: reserve system board iomem resources as well as ioport resources

Most x86 boxes have no iomem system board resources, but some ia64
boxes do.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 19 insertions, 7 deletions

diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index d42015c382af..fd17c7173c7b 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -3,7 +3,8 @@
  *
  * Some code is based on pnpbios_core.c
  * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
- *
+ * (c) Copyright 2007 Hewlett-Packard Development Company, L.P.
+ *      Bjorn Helgaas <bjorn.helgaas@hp.com>
  */
 
 #include <linux/pnp.h>
@@ -21,7 +22,7 @@ static const struct pnp_device_id pnp_dev_table[] = {
         {       "",                     0       }
 };
 
-static void reserve_ioport_range(char *pnpid, int start, int end)
+static void reserve_range(char *pnpid, int start, int end, int port)
 {
         struct resource *res;
         char *regionid;
@@ -30,7 +31,10 @@ static void reserve_ioport_range(char *pnpid, int start, int end)
         if ( regionid == NULL )
                 return;
         snprintf(regionid, 16, "pnp %s", pnpid);
-        res = request_region(start,end-start+1,regionid);
+        if (port)
+                res = request_region(start,end-start+1,regionid);
+        else
+                res = request_mem_region(start,end-start+1,regionid);
         if ( res == NULL )
                 kfree( regionid );
         else
@@ -41,8 +45,8 @@ static void reserve_ioport_range(char *pnpid, int start, int end)
          * have double reservations.
          */
         printk(KERN_INFO
-                "pnp: %s: ioport range 0x%x-0x%x %s reserved\n",
-                pnpid, start, end,
+                "pnp: %s: %s range 0x%x-0x%x %s reserved\n",
+                pnpid, port ? "ioport" : "iomem", start, end,
                 NULL != res ? "has been" : "could not be"
         );
 
@@ -75,13 +79,21 @@ static void reserve_resources_of_dev( struct pnp_dev *dev )
                         /* invalid endpoint */
                         /* Do nothing */
                         continue;
-                reserve_ioport_range(
+                reserve_range(
                         dev->dev.bus_id,
                         pnp_port_start(dev, i),
-                        pnp_port_end(dev, i)
+                        pnp_port_end(dev, i), 1
                 );
         }
 
+        for (i = 0; i < PNP_MAX_MEM; i++) {
+                if (!pnp_mem_valid(dev, i))
+                        continue;
+
+                reserve_range(dev->dev.bus_id, pnp_mem_start(dev, i),
+                        pnp_mem_end(dev, i), 0);
+        }
+
         return;
 }