Index: mtd_speedtest.c
===================================================================
RCS file: /home/cvsroot/ECMB/src/snapgear/linux-2.6.30.1.x/drivers/mtd/tests/mtd_speedtest.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 mtd_speedtest.c
--- mtd_speedtest.c	10 Aug 2009 19:42:00 -0000	1.1.1.1
+++ mtd_speedtest.c	4 Mar 2011 17:51:23 -0000
@@ -281,13 +281,14 @@
 
 static long calc_speed(void)
 {
-	long ms, k, speed;
+	uint64_t k;
+	long ms;
 
-	ms = (finish.tv_sec - start.tv_sec) * 1000 +
-	     (finish.tv_usec - start.tv_usec) / 1000;
-	k = goodebcnt * mtd->erasesize / 1024;
-	speed = (k * 1000) / ms;
-	return speed;
+	ms = (finish.tv_sec - start.tv_sec) * 1000 + /* Time in milli-seconds from start to ...*/
+	     (finish.tv_usec - start.tv_usec) / 1000;	  /* finish */
+	k = (goodebcnt * (mtd->erasesize / 1024) * 1000); /* Number of kBytes transferred * 1000 */
+	do_div(k, ms);	  /* k now contains number of kBytes/second */
+	return k;
 }
 
 static int scan_for_bad_eraseblocks(void)