From 855e0c5288177bcb193f6f6316952d2490478e1c Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 14 Oct 2013 18:11:51 +1030
Subject: 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>
---
net/9p/trans_virtio.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
(limited to 'net/9p')
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);
--
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