[AGPGART] Don't try to remap i810 registers on resume.

We don't unmap them on the suspend path, so on resume
trying to remap will fail, and then result in an
oops the next time something tries to access them.

Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 4e455f03b4f0..49cf7e2df47a 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -124,13 +124,15 @@ static int intel_i810_configure(void)
 
         current_size = A_SIZE_FIX(agp_bridge->current_size);
 
-        pci_read_config_dword(intel_i810_private.i810_dev, I810_MMADDR, &temp);
-        temp &= 0xfff80000;
-
-        intel_i810_private.registers = ioremap(temp, 128 * 4096);
         if (!intel_i810_private.registers) {
-                printk(KERN_ERR PFX "Unable to remap memory.\n");
-                return -ENOMEM;
+                pci_read_config_dword(intel_i810_private.i810_dev, I810_MMADDR, &temp);
+                temp &= 0xfff80000;
+
+                intel_i810_private.registers = ioremap(temp, 128 * 4096);
+                if (!intel_i810_private.registers) {
+                        printk(KERN_ERR PFX "Unable to remap memory.\n");
+                        return -ENOMEM;
+                }
         }
 
         if ((readl(intel_i810_private.registers+I810_DRAM_CTL)