block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers

In-kernel disk event polling doesn't matter for legacy/fringe drivers
and may lead to infinite event loop if ->check_events() implementation
generates events on level condition instead of edge.

Now that block layer supports suppressing exporting unlisted events,
simply leaving disk->events cleared allows these drivers to keep the
internal revalidation behavior intact while avoiding weird
interactions with userland event handler.

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

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 301d7a9a41a6..db8f88586c8d 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4205,7 +4205,6 @@ static int __init floppy_init(void)
                 disks[dr]->major = FLOPPY_MAJOR;
                 disks[dr]->first_minor = TOMINOR(dr);
                 disks[dr]->fops = &floppy_fops;
-                disks[dr]->events = DISK_EVENT_MEDIA_CHANGE;
                 sprintf(disks[dr]->disk_name, "fd%d", dr);
 
                 init_timer(&motor_off_timer[dr]);