diff options
author | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 18:29:41 +1100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 18:30:32 +1100 |
commit | c1f3ee120bb61045b1c0a3ead620d1d65af47130 (patch) | |
tree | 908430bf2b47fe8e96ac623ae7ab6dd5698d0938 /drivers/virtio | |
parent | e619a75ff6201b567a539e787aa9af9bc63a3187 (diff) | |
parent | 9135f1901ee6449dfe338adf6e40e9c2025b8150 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'drivers/virtio')
-rw-r--r-- | drivers/virtio/virtio.c | 13 | ||||
-rw-r--r-- | drivers/virtio/virtio_ring.c | 10 |
2 files changed, 21 insertions, 2 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 15d7787dea8..69d7ea02cd4 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -96,10 +96,23 @@ static int virtio_dev_probe(struct device *_d) return err; } +static int virtio_dev_remove(struct device *_d) +{ + struct virtio_device *dev = container_of(_d,struct virtio_device,dev); + struct virtio_driver *drv = container_of(dev->dev.driver, + struct virtio_driver, driver); + + dev->config->set_status(dev, dev->config->get_status(dev) + & ~VIRTIO_CONFIG_S_DRIVER); + drv->remove(dev); + return 0; +} + int register_virtio_driver(struct virtio_driver *driver) { driver->driver.bus = &virtio_bus; driver->driver.probe = virtio_dev_probe; + driver->driver.remove = virtio_dev_remove; return driver_register(&driver->driver); } EXPORT_SYMBOL_GPL(register_virtio_driver); diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 0e4baca21b8..1dc04b6684e 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -53,7 +53,7 @@ struct vring_virtqueue unsigned int num_added; /* Last used index we've seen. */ - unsigned int last_used_idx; + u16 last_used_idx; /* How to notify other side. FIXME: commonalize hcalls! */ void (*notify)(struct virtqueue *vq); @@ -277,11 +277,17 @@ struct virtqueue *vring_new_virtqueue(unsigned int num, struct vring_virtqueue *vq; unsigned int i; + /* We assume num is a power of 2. */ + if (num & (num - 1)) { + dev_warn(&vdev->dev, "Bad virtqueue length %u\n", num); + return NULL; + } + vq = kmalloc(sizeof(*vq) + sizeof(void *)*num, GFP_KERNEL); if (!vq) return NULL; - vring_init(&vq->vring, num, pages); + vring_init(&vq->vring, num, pages, PAGE_SIZE); vq->vq.callback = callback; vq->vq.vdev = vdev; vq->vq.vq_ops = &vring_vq_ops; |