ide: factor out adding drive to hwgroup from init_irq()

Factor out adding drive to hwgroup from init_irq() to
ide_add_drive_to_hwgroup().

There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-probe.c

@@ -911,6 +911,23 @@ static int ide_init_queue(ide_drive_t *drive)
 	return 0;
 }
 
+static void ide_add_drive_to_hwgroup(ide_drive_t *drive)
+{
+	ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
+
+	spin_lock_irq(&ide_lock);
+	if (!hwgroup->drive) {
+		/* first drive for hwgroup. */
+		drive->next = drive;
+		hwgroup->drive = drive;
+		hwgroup->hwif = HWIF(hwgroup->drive);
+	} else {
+		drive->next = hwgroup->drive->next;
+		hwgroup->drive->next = drive;
+	}
+	spin_unlock_irq(&ide_lock);
+}
+
 /*
  * This routine sets up the irq for an ide interface, and creates a new
  * hwgroup for the irq/hwif if none was previously assigned.
@@ -1033,17 +1050,7 @@ static int init_irq (ide_hwif_t *hwif)
 			printk(KERN_ERR "ide: failed to init %s\n",drive->name);
 			continue;
 		}
-		spin_lock_irq(&ide_lock);
-		if (!hwgroup->drive) {
-			/* first drive for hwgroup. */
-			drive->next = drive;
-			hwgroup->drive = drive;
-			hwgroup->hwif = HWIF(hwgroup->drive);
-		} else {
-			drive->next = hwgroup->drive->next;
-			hwgroup->drive->next = drive;
-		}
-		spin_unlock_irq(&ide_lock);
+		ide_add_drive_to_hwgroup(drive);
 	}
 
 #if !defined(__mc68000__) && !defined(CONFIG_APUS)