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authorTejun Heo <tj@kernel.org>2011-03-09 19:54:28 +0100
committerTejun Heo <tj@kernel.org>2011-03-09 19:54:28 +0100
commitffe80cea354519d846767b8165598c2903706c2a (patch)
tree2168adbcba027c96a1e0dfc3b4d7cb105ef2c03d
parentf47350fdecb7ce9fe715e2df4431c4b51c4ef46b (diff)
downloadop-kernel-dev-ffe80cea354519d846767b8165598c2903706c2a.zip
op-kernel-dev-ffe80cea354519d846767b8165598c2903706c2a.tar.gz
s390/tape_block: Convert to bdops->check_events()
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>
-rw-r--r--drivers/s390/char/tape_block.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 55d2d0f..ad84316 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -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;
}
/*
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