[PATCH] ide-tape: use time_after macro

From: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>

It deals with wrapping correctly and is nicer to read.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/ide/ide-tape.c
===================================================================
--- linux-kj.orig/drivers/ide/ide-tape.c	2005-10-28 16:25:06.000000000 +0400
+++ linux-kj/drivers/ide/ide-tape.c	2005-10-28 16:30:50.000000000 +0400
@@ -2494,7 +2494,8 @@ static ide_startstop_t idetape_do_reques
 			} else {
 				return ide_do_reset(drive);
 			}
-		} else if (jiffies - tape->dsc_polling_start > IDETAPE_DSC_MA_THRESHOLD)
+		} else if (time_after(jiffies, tape->dsc_polling_start
+					+ IDETAPE_DSC_MA_THRESHOLD))
 			tape->dsc_polling_frequency = IDETAPE_DSC_MA_SLOW;
 		idetape_postpone_request(drive);
 		return ide_stopped;