intel-agp: fix a panic with 1M of shared memory, no GTT entries

[safe/jmp/linux-2.6] / drivers / char / agp / intel-agp.c

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index c771418..4373adb 100644 (file)
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -633,13 +633,15 @@ static void intel_i830_init_gtt_entries(void)
                        break;
                }
        }
-       if (gtt_entries > 0)
+       if (gtt_entries > 0) {
                dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n",
                       gtt_entries / KB(1), local ? "local" : "stolen");
-       else
+               gtt_entries /= KB(4);
+       } else {
                dev_info(&agp_bridge->dev->dev,
                       "no pre-allocated video memory detected\n");
-       gtt_entries /= KB(4);
+               gtt_entries = 0;
+       }
 
        intel_private.gtt_entries = gtt_entries;
 }