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authorDan Carpenter <dan.carpenter@oracle.com>2016-04-15 16:45:10 +0200
committerMichael S. Tsirkin <mst@redhat.com>2016-05-01 14:50:08 +0200
commite00f7bd221292b318d4d09c3f0c2c8af9b1e5edf (patch)
tree86ca592852d959e65ee9038d10ddd8532eb92c02 /drivers/virtio/virtio_ring.c
parentfirmware: qemu_fw_cfg.c: potential unintialized variable (diff)
downloadlinux-e00f7bd221292b318d4d09c3f0c2c8af9b1e5edf.tar.xz
linux-e00f7bd221292b318d4d09c3f0c2c8af9b1e5edf.zip
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>
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
-rw-r--r--drivers/virtio/virtio_ring.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5c802d47892c..ca6bfddaacad 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -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;