diff -Naur linux-2.6.8-01/drivers/net/wireless/prism54/isl_ioctl.c linux-2.6.8-04/drivers/net/wireless/prism54/isl_ioctl.c
--- linux-2.6.8-01/drivers/net/wireless/prism54/isl_ioctl.c	2004-08-10 10:52:08.000000000 +0200
+++ linux-2.6.8-04/drivers/net/wireless/prism54/isl_ioctl.c	2004-08-10 13:21:03.000000000 +0200
@@ -436,7 +436,7 @@
 {
 	struct iw_range *range = (struct iw_range *) extra;
 	islpci_private *priv = netdev_priv(ndev);
-	char *data;
+	u8 *data;
 	int i, m, rvalue;
 	struct obj_frequencies *freq;
 	union oid_res_t r;
@@ -513,8 +513,7 @@
 	i = 0;
 	while ((i < IW_MAX_BITRATES) && (*data != 0)) {
 		/*       the result must be in bps. The card gives us 500Kbps */
-		range->bitrate[i] = (__s32) (*data >> 1);
-		range->bitrate[i] *= 1000000;
+		range->bitrate[i] = *data * 500000;
 		i++;
 		data++;
 	}