[PATCH] ide: remove redundant hwgroup->handler checks from ide-taskfile.c

Remove checks for hwgroup->handler == NULL from task_[in,mulin,out]_intr()
(CONFIG_IDE_TASKFILE_IO=n versions).  These functions can be called only from
ide_intr() or ide_timer_expiry() and both set hwgroup->handler to NULL first.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/ide/ide-taskfile.c

@@ -317,7 +317,6 @@ ide_startstop_t task_in_intr (ide_drive_t *drive)
 		}
 		if (!(stat & BUSY_STAT)) {
 			DTF("task_in_intr to Soon wait for next interrupt\n");
-			if (HWGROUP(drive)->handler == NULL)
 			ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
 			return ide_started;  
 		}
@@ -332,11 +331,6 @@ ide_startstop_t task_in_intr (ide_drive_t *drive)
 	if (--rq->current_nr_sectors <= 0)
 		if (!DRIVER(drive)->end_request(drive, 1, 0))
 			return ide_stopped;
-	/*
-	 * ERM, it is techincally legal to leave/exit here but it makes
-	 * a mess of the code ...
-	 */
-	if (HWGROUP(drive)->handler == NULL)
 	ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
 	return ide_started;
 }
@@ -360,7 +354,6 @@ ide_startstop_t task_mulin_intr (ide_drive_t *drive)
 			return DRIVER(drive)->error(drive, "task_mulin_intr", stat);
 		}
 		/* no data yet, so wait for another interrupt */
-		if (HWGROUP(drive)->handler == NULL)
 		ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
 		return ide_started;
 	}
@@ -384,7 +377,6 @@ ide_startstop_t task_mulin_intr (ide_drive_t *drive)
 				return ide_stopped;
 		}
 	} while (msect);
-	if (HWGROUP(drive)->handler == NULL)
 	ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
 	return ide_started;
 }
@@ -445,7 +437,6 @@ ide_startstop_t task_out_intr (ide_drive_t *drive)
 		rq->errors = 0;
 		rq->current_nr_sectors--;
 	}
-	if (HWGROUP(drive)->handler == NULL)
 	ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
 	return ide_started;
 }