[ide] ide-tape: use time_after() macro

Explicit jiffy comparision converted to time_after() macro.
Signed-off-by: Tejun Heo <tj@home-tj.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-tape.c

@@ -2439,7 +2439,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
 			tape->dsc_polling_start = jiffies;
 			tape->dsc_polling_frequency = tape->best_dsc_rw_frequency;
 			tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT;
-		} else if ((signed long) (jiffies - tape->dsc_timeout) > 0) {
+		} else if (time_after(jiffies, tape->dsc_timeout)) {
 			printk(KERN_ERR "ide-tape: %s: DSC timeout\n",
 				tape->name);
 			if (rq->cmd[0] & REQ_IDETAPE_PC2) {