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>
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@ -779,20 +779,10 @@ static int mm_getgeo(struct block_device *bdev, struct hd_geometry *geo)
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return 0;
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}
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/*
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* Future support for removable devices
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*/
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static int mm_check_change(struct gendisk *disk)
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{
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/* struct cardinfo *dev = disk->private_data; */
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return 0;
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}
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static const struct block_device_operations mm_fops = {
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.owner = THIS_MODULE,
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.getgeo = mm_getgeo,
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.revalidate_disk = mm_revalidate,
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.media_changed = mm_check_change,
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};
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static int __devinit mm_pci_probe(struct pci_dev *dev,
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