blob: 0abbefa44db403cd91d1c92c5dbc48deabc6701d (
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diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 8e50888..67e06fe 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -21,20 +21,19 @@
* actually quite cheap.
*/
+#ifdef CONFIG_SMP
static inline void virtio_mb(bool weak_barriers)
{
-#ifdef CONFIG_SMP
if (weak_barriers)
smp_mb();
else
-#endif
mb();
}
static inline void virtio_rmb(bool weak_barriers)
{
if (weak_barriers)
- dma_rmb();
+ smp_rmb();
else
rmb();
}
@@ -42,10 +41,26 @@ static inline void virtio_rmb(bool weak_barriers)
static inline void virtio_wmb(bool weak_barriers)
{
if (weak_barriers)
- dma_wmb();
+ smp_wmb();
else
wmb();
}
+#else
+static inline void virtio_mb(bool weak_barriers)
+{
+ mb();
+}
+
+static inline void virtio_rmb(bool weak_barriers)
+{
+ rmb();
+}
+
+static inline void virtio_wmb(bool weak_barriers)
+{
+ wmb();
+}
+#endif
struct virtio_device;
struct virtqueue;
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