![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
static void vb2_dc_put(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
if (!atomic_dec_and_test(&buf->refcount))
return;
if (buf->sgt_base) {
sg_free_table(buf->sgt_base);
kfree(buf->sgt_base);
}
dma_free_coherent(buf->dev, buf->size, buf->vaddr, buf->dma_addr);
put_device(buf->dev);
kfree(buf);
}
