[PATCH] IDE: Fix request handling with ide-default & ATAPI

This fixes a bug that happens when a request gets to the IDE layer for a
drive using ide-default (that is with no subdriver attached), like a
Power Management request.  In this case, the core will wait for the
device status to match drive->read_stat, but that field contains by
default a value that is not suitable for ATAPI devices.  This patch
fixes it.

drivers/ide/ide-default.c

@@ -57,6 +57,14 @@ static int idedefault_attach (ide_drive_t *drive)
 			"driver with ide.c\n", drive->name);
 		return 1;
 	}
+	
+	/* For the sake of the request layer, we must make sure we have a
+	 * correct ready_stat value, that is 0 for ATAPI devices or we will
+	 * fail any request like Power Management
+	 */
+	if (drive->media != ide_disk)
+		drive->ready_stat = 0;
+
 	return 0;
 }