net/virtio: fix incorrect cast of void *

[dpdk.git] / drivers / net / virtio / virtio_ring.h

diff --git a/drivers/net/virtio/virtio_ring.h b/drivers/net/virtio/virtio_ring.h
index a16c499..fcecc16 100644 (file)
--- a/drivers/net/virtio/virtio_ring.h
+++ b/drivers/net/virtio/virtio_ring.h
@@ -79,7 +79,7 @@ struct vring_used_elem {
 
 struct vring_used {
        uint16_t flags;
-       uint16_t idx;
+       volatile uint16_t idx;
        struct vring_used_elem ring[0];
 };
 
@@ -123,10 +123,10 @@ struct vring {
 #define vring_used_event(vr)  ((vr)->avail->ring[(vr)->num])
 #define vring_avail_event(vr) (*(uint16_t *)&(vr)->used->ring[(vr)->num])
 
-static inline int
+static inline size_t
 vring_size(unsigned int num, unsigned long align)
 {
-       int size;
+       size_t size;
 
        size = num * sizeof(struct vring_desc);
        size += sizeof(struct vring_avail) + (num * sizeof(uint16_t));