swim: use bdev_check_media_change

Switch to use bdev_check_media_change 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@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index dd34504..d4565c5 100644 (file)
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -217,6 +217,8 @@ extern int swim_read_sector_header(struct swim __iomem *base,
 extern int swim_read_sector_data(struct swim __iomem *base,
                                 unsigned char *data);
 
+static int floppy_revalidate(struct gendisk *disk);
+
 static DEFINE_MUTEX(swim_mutex);
 static inline void set_swim_mode(struct swim __iomem *base, int enable)
 {
@@ -638,7 +640,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
                return 0;
 
        if (mode & (FMODE_READ|FMODE_WRITE)) {
-               check_disk_change(bdev);
+               if (bdev_check_media_change(bdev))
+                       floppy_revalidate(bdev->bd_disk);
                if ((mode & FMODE_WRITE) && fs->write_protected) {
                        err = -EROFS;
                        goto out;
@@ -760,7 +763,6 @@ static const struct block_device_operations floppy_fops = {
        .ioctl           = floppy_ioctl,
        .getgeo          = floppy_getgeo,
        .check_events    = floppy_check_events,
-       .revalidate_disk = floppy_revalidate,
 };
 
 static struct kobject *floppy_find(dev_t dev, int *part, void *data)