[PATCH] fix compares of jiffies

on rechecking the current stable kernel code, I found some places where jiffies
were compared in a way that seems to break when they wrap. For these,
I made up patches to use the macros "time_before()" or "time_after()"
that are supposed to handle wraparound correctly.

drivers/usb/storage/sddr55.c

@@ -788,7 +788,7 @@ int sddr55_transport(Scsi_Cmnd *srb, struct us_data *us)
 	/* only check card status if the map isn't allocated, ie no card seen yet
 	 * or if it's been over half a second since we last accessed it
 	 */
-	if (info->lba_to_pba == NULL || jiffies > (info->last_access + HZ/2)) {
+	if (info->lba_to_pba == NULL || time_after(jiffies, info->last_access + HZ/2)) {
 
 		/* check to see if a card is fitted */
 		result = sddr55_status (us);