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| author | Rusty Russell <rusty@rustcorp.com.au> | 2013-10-14 18:11:51 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-10-17 10:55:37 +1030 |
| commit | 855e0c5288177bcb193f6f6316952d2490478e1c (patch) | |
| tree | 7c5cfed44c9def1a7ca3388f37a9520de52af44b /net | |
| parent | 0b90d0622ad290b3717a13489b396af52aea9d2d (diff) | |
| download | lwn-855e0c5288177bcb193f6f6316952d2490478e1c.tar.gz lwn-855e0c5288177bcb193f6f6316952d2490478e1c.zip | |
virtio: use size-based config accessors.
This lets the transport do endian conversion if necessary, and insulates
the drivers from the difference.
Most drivers can use the simple helpers virtio_cread() and virtio_cwrite().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'net')
| -rw-r--r-- | net/9p/trans_virtio.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 990afab2be1b..9c5a1aa34d12 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -544,9 +544,7 @@ static int p9_virtio_probe(struct virtio_device *vdev) chan->inuse = false; if (virtio_has_feature(vdev, VIRTIO_9P_MOUNT_TAG)) { - vdev->config->get(vdev, - offsetof(struct virtio_9p_config, tag_len), - &tag_len, sizeof(tag_len)); + virtio_cread(vdev, struct virtio_9p_config, tag_len, &tag_len); } else { err = -EINVAL; goto out_free_vq; @@ -556,8 +554,9 @@ static int p9_virtio_probe(struct virtio_device *vdev) err = -ENOMEM; goto out_free_vq; } - vdev->config->get(vdev, offsetof(struct virtio_9p_config, tag), - tag, tag_len); + + virtio_cread_bytes(vdev, offsetof(struct virtio_9p_config, tag), + tag, tag_len); chan->tag = tag; chan->tag_len = tag_len; err = sysfs_create_file(&(vdev->dev.kobj), &dev_attr_mount_tag.attr); |