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| author | Michael S. Tsirkin <mst@redhat.com> | 2014-12-04 20:20:27 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-12-09 16:32:32 +0200 |
| commit | 5c609a5ef05d98e26778824ba84581fe5e400db6 (patch) | |
| tree | 487da89e8ad7ef9d3bcb485ae877518f1669e18b /drivers/virtio/virtio_mmio.c | |
| parent | ce15408f350c4b97635618692a45aedabfdd2696 (diff) | |
| download | lwn-5c609a5ef05d98e26778824ba84581fe5e400db6.tar.gz lwn-5c609a5ef05d98e26778824ba84581fe5e400db6.zip | |
virtio: allow finalize_features to fail
This will make it easy for transports to validate features and return
failure.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio/virtio_mmio.c')
| -rw-r--r-- | drivers/virtio/virtio_mmio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index aec1daee9ada..5219210d31ce 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -152,7 +152,7 @@ static u64 vm_get_features(struct virtio_device *vdev) return readl(vm_dev->base + VIRTIO_MMIO_HOST_FEATURES); } -static void vm_finalize_features(struct virtio_device *vdev) +static int vm_finalize_features(struct virtio_device *vdev) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); @@ -164,6 +164,8 @@ static void vm_finalize_features(struct virtio_device *vdev) writel(0, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES_SEL); writel(vdev->features, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES); + + return 0; } static void vm_get(struct virtio_device *vdev, unsigned offset, |