[PATCH] fbdev: Fix mode handling in rivafb if with no EDID

The current code in rivafb will not accept modes other than 640x480-60 if
the the EDID block is absent.

This patch changes the behavior to the opposite, if without an EDID, rivafb
will accept all modelines coming from userspace (2.4 behavior).
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/riva/fbdev.c

@@ -1126,7 +1126,7 @@ static int rivafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 		}
 	}
 
-	if (!mode_valid && !list_empty(&info->modelist))
+	if (!mode_valid && info->monspecs.modedb_len)
 		return -EINVAL;
 
 	if (var->xres_virtual < var->xres)
@@ -2017,7 +2017,6 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
 	}
 
 	fb_destroy_modedb(info->monspecs.modedb);
-	info->monspecs.modedb_len = 0;
 	info->monspecs.modedb = NULL;
 	if (register_framebuffer(info) < 0) {
 		printk(KERN_ERR PFX