[PATCH] Patch for nvidia divide by zero error for 7600 pci-express card

The following patch resolves the divide by zero error I encountered on my
system:

	http://marc.10east.com/?l=linux-fbdev-devel&m=116058257024413&w=2

I accomplished this by merging what I thought was appropriate from:

	http://webcvs.freedesktop.org/xorg/driver/xf86-video-nv/src/

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 17 insertions, 1 deletions

diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c
index a18a9aebf05f..61dc46fecf2b 100644
--- a/drivers/video/nvidia/nv_setup.c
+++ b/drivers/video/nvidia/nv_setup.c
@@ -359,6 +359,7 @@ int NVCommonSetup(struct fb_info *info)
         case 0x0186:
         case 0x0187:
         case 0x018D:
+        case 0x0228:
         case 0x0286:
         case 0x028C:
         case 0x0316:
@@ -382,6 +383,10 @@ int NVCommonSetup(struct fb_info *info)
         case 0x034C:
         case 0x0160:
         case 0x0166:
+        case 0x0169:
+        case 0x016B:
+        case 0x016C:
+        case 0x016D:
         case 0x00C8:
         case 0x00CC:
         case 0x0144:
@@ -639,12 +644,23 @@ int NVCommonSetup(struct fb_info *info)
                 par->fpHeight = NV_RD32(par->PRAMDAC, 0x0800) + 1;
                 par->fpSyncs = NV_RD32(par->PRAMDAC, 0x0848) & 0x30000033;
 
-                printk("Panel size is %i x %i\n", par->fpWidth, par->fpHeight);
+                printk("nvidiafb: Panel size is %i x %i\n", par->fpWidth, par->fpHeight);
         }
 
         if (monA)
                 info->monspecs = *monA;
 
+        if (!par->FlatPanel || !par->twoHeads)
+                par->FPDither = 0;
+
+        par->LVDS = 0;
+        if (par->FlatPanel && par->twoHeads) {
+                NV_WR32(par->PRAMDAC0, 0x08B0, 0x00010004);
+                if (par->PRAMDAC0[0x08b4] & 1)
+                        par->LVDS = 1;
+                printk("nvidiafb: Panel is %s\n", par->LVDS ? "LVDS" : "TMDS");
+        }
+
         kfree(edidA);
         kfree(edidB);
 done: