umem: Drop dummy ->media_changed()

umem doesn't implement media changed detection and there's no need to
implement dummy callback anymore.  Remove it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>

diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 8be57151f5d6570cd9b9c9a629618bc23ae3466b..9b102abe209ce795f287b5504b97daaaa4c59337 100644 (file)
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -779,20 +779,10 @@ static int mm_getgeo(struct block_device *bdev, struct hd_geometry *geo)
        return 0;
 }
 
-/*
- * Future support for removable devices
- */
-static int mm_check_change(struct gendisk *disk)
-{
-/*  struct cardinfo *dev = disk->private_data; */
-       return 0;
-}
-
 static const struct block_device_operations mm_fops = {
        .owner          = THIS_MODULE,
        .getgeo         = mm_getgeo,
        .revalidate_disk = mm_revalidate,
-       .media_changed  = mm_check_change,
 };
 
 static int __devinit mm_pci_probe(struct pci_dev *dev,