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ub: Convert to bdops->check_events() 

Convert from ->media_changed() to ->check_events().

ub buffers media changed state and clears it on revalidation.  It will
behave correctly with kernel event polling.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
This commit is contained in:
Tejun Heo 2011-03-09 19:54:28 +01:00
parent 4bbde77787
commit aaa7c01546
1 changed files with 6 additions and 4 deletions
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10
drivers/block/ub.c
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@ -1788,7 +1788,8 @@ static int ub_bd_revalidate(struct gendisk *disk)
*
* The return code is bool!
*/
static int ub_bd_media_changed(struct gendisk *disk)
static unsigned int ub_bd_check_events(struct gendisk *disk,
unsigned int clearing)
{
struct ub_lun *lun = disk->private_data;
@ -1806,10 +1807,10 @@ static int ub_bd_media_changed(struct gendisk *disk)
*/
if (ub_sync_tur(lun->udev, lun) != 0) {
lun->changed = 1;
return 1;
return DISK_EVENT_MEDIA_CHANGE;
}
return lun->changed;
return lun->changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static const struct block_device_operations ub_bd_fops = {
@ -1817,7 +1818,7 @@ static const struct block_device_operations ub_bd_fops = {
.open = ub_bd_unlocked_open,
.release = ub_bd_release,
.ioctl = ub_bd_ioctl,
.media_changed = ub_bd_media_changed,
.check_events = ub_bd_check_events,
.revalidate_disk = ub_bd_revalidate,
};
@ -2333,6 +2334,7 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum)
disk->major = UB_MAJOR;
disk->first_minor = lun->id * UB_PARTS_PER_LUN;
disk->fops = &ub_bd_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = lun;
disk->driverfs_dev = &sc->intf->dev;