Switch to use bdev_check_media_changed instead of check_disk_change and^^^
call floppy_revalidate manually. Given that floppy_revalidate only[...]
deals with media change events, the extra call into ->revalidate_disk
from bdev_disk_changed is not required either, so stop wiring up the
method.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>