[PATCH] ieee1394: skip dummy loop in build_speed_map

The last loop in ieee1394 core's speed calculation is not required
unless ieee1394.h::IEEE1394_SPEED_MAX is changed from its current value
of 3.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>

drivers/ieee1394/ieee1394.h

@@ -77,6 +77,8 @@ extern const char *hpsb_speedto_str[];
 #define SELFID_PORT_NCONN        0x1
 #define SELFID_PORT_NONE         0x0
 
+#define SELFID_SPEED_UNKNOWN		0x3	/* 1394b PHY */
+
 #define PHYPACKET_LINKON			0x40000000
 #define PHYPACKET_PHYCONFIG_R			0x00800000
 #define PHYPACKET_PHYCONFIG_T			0x00400000