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s390/tape_block: Convert to bdops->check_events()

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

s390/tape_block 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: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Tejun Heo 2011-03-09 19:54:28 +01:00
parent f47350fdec
commit ffe80cea35
1 changed files with 6 additions and 5 deletions
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11
drivers/s390/char/tape_block.c
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@ -48,14 +48,14 @@
static DEFINE_MUTEX(tape_block_mutex);
static int tapeblock_open(struct block_device *, fmode_t);
static int tapeblock_release(struct gendisk *, fmode_t);
static int tapeblock_medium_changed(struct gendisk *);
static unsigned int tapeblock_check_events(struct gendisk *, unsigned int);
static int tapeblock_revalidate_disk(struct gendisk *);
static const struct block_device_operations tapeblock_fops = {
.owner = THIS_MODULE,
.open = tapeblock_open,
.release = tapeblock_release,
.media_changed = tapeblock_medium_changed,
.check_events = tapeblock_check_events,
.revalidate_disk = tapeblock_revalidate_disk,
};
@ -237,6 +237,7 @@ tapeblock_setup_device(struct tape_device * device)
disk->major = tapeblock_major;
disk->first_minor = device->first_minor;
disk->fops = &tapeblock_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = tape_get_device(device);
disk->queue = blkdat->request_queue;
set_capacity(disk, 0);
@ -340,8 +341,8 @@ tapeblock_revalidate_disk(struct gendisk *disk)
return 0;
}
static int
tapeblock_medium_changed(struct gendisk *disk)
static unsigned int
tapeblock_check_events(struct gendisk *disk, unsigned int clearing)
{
struct tape_device *device;
@ -349,7 +350,7 @@ tapeblock_medium_changed(struct gendisk *disk)
DBF_LH(6, "tapeblock_medium_changed(%p) = %d\n",
device, device->blk_data.medium_changed);
return device->blk_data.medium_changed;
return device->blk_data.medium_changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
/*