[PATCH] savagefb: Fix load failure of the Twister chipset

- The Twister chipsets are actually prosavages.  Reclassify them as
  such and remove the S3_SAVAGE_TWISTER id.
- Fix i2c code if fb_firmware_edid() returns NULL

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index b5ca3ef..7c28545 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -1773,8 +1773,7 @@
 		}
 	}
 
-	if (S3_SAVAGE_MOBILE_SERIES(par->chip) ||
-	    (S3_MOBILE_TWISTER_SERIES(par->chip) && !par->crtonly))
+	if (S3_SAVAGE_MOBILE_SERIES(par->chip) && !par->crtonly)
 		par->display_type = DISP_LCD;
 	else if (dvi || (par->chip == S3_SAVAGE4 && par->dvi))
 		par->display_type = DISP_DFP;
@@ -1783,7 +1782,7 @@
 
 	/* Check LCD panel parrmation */
 
-	if (par->chip == S3_SAVAGE_MX) {
+	if (par->display_type == DISP_LCD) {
 		unsigned char cr6b = VGArCR( 0x6b );
 
 		int panelX = (VGArSEQ (0x61) +
@@ -1922,15 +1921,15 @@
 		snprintf (info->fix.id, 16, "ProSavageKM");
 		break;
 	case FB_ACCEL_S3TWISTER_P:
-		par->chip = S3_TWISTER;
+		par->chip = S3_PROSAVAGE;
 		snprintf (info->fix.id, 16, "TwisterP");
 		break;
 	case FB_ACCEL_S3TWISTER_K:
-		par->chip = S3_TWISTER;
+		par->chip = S3_PROSAVAGE;
 		snprintf (info->fix.id, 16, "TwisterK");
 		break;
 	case FB_ACCEL_PROSAVAGE_DDR:
-		par->chip = S3_PROSAVAGEDDR;
+		par->chip = S3_PROSAVAGE;
 		snprintf (info->fix.id, 16, "ProSavageDDR");
 		break;
 	case FB_ACCEL_PROSAVAGE_DDRK: