V4L/DVB (4972): Dvb-core: fix bug in CRC-32 checking on 64-bit systems

CRC-32 checking during ULE decapsulation always failed on x86_64 systems due
to the size of a variable used to store CRC. This bug was discovered on
Fedora Core 6 with kernel-2.6.18-1.2849. The i386 counterpart has no such
problem. This patch has been tested on 64-bit system as well as 32-bit system.
Signed-off-by: Ang Way Chuang <wcang@nrg.cs.usm.my>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/dvb-core/dvb_net.c

@@ -605,7 +605,7 @@ static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len )
 				{ &utype, sizeof utype },
 				{ priv->ule_skb->data, priv->ule_skb->len - 4 }
 			};
-			unsigned long ule_crc = ~0L, expected_crc;
+			u32 ule_crc = ~0L, expected_crc;
 			if (priv->ule_dbit) {
 				/* Set D-bit for CRC32 verification,
 				 * if it was set originally. */