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| author | Michael S. Tsirkin <mst@redhat.com> | 2014-10-15 10:22:30 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2014-10-15 10:25:02 +1030 |
| commit | 7a11370e5e6c26566904bb7f08281093a3002ff2 (patch) | |
| tree | 2d63d93824a632ed1ca62f081d85e87a8ef214a4 /drivers/block | |
| parent | 4baf1e33d0842c9673fef4af207d4b74da8d0126 (diff) | |
| download | lwn-7a11370e5e6c26566904bb7f08281093a3002ff2.tar.gz lwn-7a11370e5e6c26566904bb7f08281093a3002ff2.zip | |
virtio_blk: enable VQs early
virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after probe returns, virtio block violated this
rule by calling add_disk, which causes the VQ to be used directly within
probe.
To fix, call virtio_device_ready before using VQs.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/virtio_blk.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 89ba8d6baa94..34ec273b1d46 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -719,6 +719,8 @@ static int virtblk_probe(struct virtio_device *vdev) if (!err && opt_io_size) blk_queue_io_opt(q, blk_size * opt_io_size); + virtio_device_ready(vdev); + add_disk(vblk->disk); err = device_create_file(disk_to_dev(vblk->disk), &dev_attr_serial); if (err) |