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virtio: Silence uninitialized variable warning 

Smatch complains that we might not initialize "queue".  The issue is
callers like setup_vq() from virtio_pci_modern.c where "num" could be
something like 2 and "vring_align" is 64.  In that case, vring_size() is
less than PAGE_SIZE.  It won't happen in real life, but we're getting
the value of "num" from a register so it's not really possible to tell
what value it holds with static analysis.

Let's just silence the warning.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dan Carpenter 2016-04-15 17:45:10 +03:00 committed by Michael S. Tsirkin
parent d4f6e272f2
commit e00f7bd221
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio_ring.c
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@ -1006,7 +1006,7 @@ struct virtqueue *vring_create_virtqueue(
const char *name)
{
struct virtqueue *vq;
void *queue;
void *queue = NULL;
dma_addr_t dma_addr;
size_t queue_size_in_bytes;
struct vring vring;