pktcdvd: Convert to bdops->check_events()

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

pktcdvd needs to forward all event related operations to the
underlying device.  Forward ->check_events() instead of
->media_changed() and inherit disk->[async_]events.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Peter Osterlund <petero2@telia.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 77d70eebb6b2..a077db27b7c9 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2796,7 +2796,8 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
         return ret;
 }
 
-static int pkt_media_changed(struct gendisk *disk)
+static unsigned int pkt_check_events(struct gendisk *disk,
+                                     unsigned int clearing)
 {
         struct pktcdvd_device *pd = disk->private_data;
         struct gendisk *attached_disk;
@@ -2806,9 +2807,9 @@ static int pkt_media_changed(struct gendisk *disk)
         if (!pd->bdev)
                 return 0;
         attached_disk = pd->bdev->bd_disk;
-        if (!attached_disk)
+        if (!attached_disk || !attached_disk->fops->check_events)
                 return 0;
-        return attached_disk->fops->media_changed(attached_disk);
+        return attached_disk->fops->check_events(attached_disk, clearing);
 }
 
 static const struct block_device_operations pktcdvd_ops = {
@@ -2816,7 +2817,7 @@ static const struct block_device_operations pktcdvd_ops = {
         .open =                 pkt_open,
         .release =              pkt_close,
         .ioctl =                pkt_ioctl,
-        .media_changed =        pkt_media_changed,
+        .check_events =         pkt_check_events,
 };
 
 static char *pktcdvd_devnode(struct gendisk *gd, mode_t *mode)
@@ -2889,6 +2890,10 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
         if (ret)
                 goto out_new_dev;
 
+        /* inherit events of the host device */
+        disk->events = pd->bdev->bd_disk->events;
+        disk->async_events = pd->bdev->bd_disk->async_events;
+
         add_disk(disk);
 
         pkt_sysfs_dev_new(pd);