SHARED_SIZE
memset(priv->shared, 0, SHARED_SIZE);
if (size != SHARED_SIZE)
case SHARED_SIZE >> PAGE_SHIFT:
priv->shared = dma_alloc_coherent(dev, SHARED_SIZE,
SHARED_SIZE, irq);
dma_free_coherent(dev, SHARED_SIZE,
dma_free_coherent(dev, SHARED_SIZE, priv->shared, priv->shared_phys);