xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

virtio: use size-based config accessors.

Browse Source 
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>
This commit is contained in:
Rusty Russell
2013-10-14 18:11:51 +10:30
parent 0b90d0622a
commit 855e0c5288
7 changed files with 79 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/9p/trans_virtio.c
View File

@@ -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);