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xen-blkback: Avoid that gcc 7 warns about fall-through when building with W=1 

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Roger Pau Monn303251 <roger.pau@citrix.com>
Cc: xen-devel@lists.xenproject.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2017-08-17 16:23:10 -07:00 committed by Jens Axboe
parent 306b82a806
commit 3f2c9405fa
2 changed files with 3 additions and 1 deletions
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1
drivers/block/xen-blkback/blkback.c
View File

@ -1251,6 +1251,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
break;
case BLKIF_OP_WRITE_BARRIER:
drain = true;
/* fall through */
case BLKIF_OP_FLUSH_DISKCACHE:
ring->st_f_req++;
operation = REQ_OP_WRITE;

3
drivers/block/xen-blkback/xenbus.c
View File

@ -810,7 +810,8 @@ static void frontend_changed(struct xenbus_device *dev,
xenbus_switch_state(dev, XenbusStateClosed);
if (xenbus_dev_is_online(dev))
break;
/* fall through if not online */
/* fall through */
/* if not online */
case XenbusStateUnknown:
/* implies xen_blkif_disconnect() via xen_blkbk_remove() */
device_unregister(&dev->dev);