diff --git a/drivers/net/wan/hd6457x.c b/drivers/net/wan/hd6457x.c
index b25b4a2..0315623 100644
--- a/drivers/net/wan/hd6457x.c
+++ b/drivers/net/wan/hd6457x.c
@@ -67,11 +67,13 @@
 #define sca_outa(value, reg, card)	sca_outw(value, reg, card)
 #define sca_ina(reg, card)		sca_inw(reg, card)
 #define writea(value, ptr)		writew(value, ptr)
+#define reada(ptr)			readw(ptr)
 
 #else /* HD64572 */
 #define sca_outa(value, reg, card)	sca_outl(value, reg, card)
 #define sca_ina(reg, card)		sca_inl(reg, card)
 #define writea(value, ptr)		writel(value, ptr)
+#define reada(ptr)			readl(ptr)
 #endif
 
 static inline struct net_device *port_to_dev(port_t *port)
@@ -674,7 +676,7 @@ static void sca_dump_rings(struct net_de
 {
 	port_t *port = dev_to_port(dev);
 	card_t *card = port_to_card(port);
-	u16 cnt;
+	u16 cnt, transmit;
 #if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
 	u8 page;
 #endif
@@ -698,11 +700,28 @@ static void sca_dump_rings(struct net_de
 	       sca_ina(get_dmac_tx(port) + EDAL, card),
 	       sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
 	       sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
-
 	for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++)
 		printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));
 	printk("\n");
 
+	for (transmit = 0; transmit < 2; transmit++) {
+		u16 buffs = transmit ? card->tx_ring_buffers
+			: card->rx_ring_buffers;
+		for (cnt = 0; cnt < buffs; cnt++) {
+			pkt_desc __iomem *desc = desc_address(port, cnt,
+							      transmit);
+			u32 chain_off = reada(&desc->cp);
+			u32 buff_off = readl(&desc->bp);
+			if (chain_off != desc_offset(port, cnt +1, transmit) ||
+			    buff_off != buffer_offset(port, cnt, transmit))
+				printk("Invalid %s desc #%u: %u %u %u 0x%X "
+				       "0x%X\n", transmit ? "TX" : "RX", cnt,
+				       chain_off, buff_off, readw(&desc->len),
+				       readb(&desc->stat),
+				       readb(&desc->unused));
+		}
+	}
+
 	printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, "
 	       "ST: %02x %02x %02x %02x"
 #ifdef __HD64572_H