[PATCH] Fix pseudo_palette setup in asiliantfb_setcolreg()

The setcolreg function will attempt to write 24 color entries to the
pseudo_pallette.  However, the pseudo_palette has only space for 16 entries.

Thanks to Atsushi Nemoto for reporting this bug.
Signed-off-by: NAntonino Daplas <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/video/asiliantfb.c

@@ -322,32 +322,29 @@ static int asiliantfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 	writeb(green, mmio_base + 0x791);
 	writeb(blue, mmio_base + 0x791);
 
-	switch(p->var.bits_per_pixel) {
-	case 15:
 	if (regno < 16) {
+		switch(p->var.red.offset) {
+		case 10: /* RGB 555 */
 			((u32 *)(p->pseudo_palette))[regno] =
 				((red & 0xf8) << 7) |
 				((green & 0xf8) << 2) |
 				((blue & 0xf8) >> 3);
-		}
 			break;
-	case 16:
-		if (regno < 16) {
+		case 11: /* RGB 565 */
 			((u32 *)(p->pseudo_palette))[regno] =
 				((red & 0xf8) << 8) |
 				((green & 0xfc) << 3) |
 				((blue & 0xf8) >> 3);
-		}
 			break;
-	case 24:
-		if (regno < 24) {
+		case 16: /* RGB 888 */
 			((u32 *)(p->pseudo_palette))[regno] =
 				(red << 16)  |
 				(green << 8) |
 				(blue);
-		}
 			break;
 		}
+	}
+
 	return 0;
 }