*
* Each device has a kref, which is initialized to 1 when the device is
* registered. A kref_get is done for each device registered. When the
- * device is released, the coresponding kref_put is done in the release
+ * device is released, the corresponding kref_put is done in the release
* method. Every time one of the device's channels is allocated to a client,
- * a kref_get occurs. When the channel is freed, the coresponding kref_put
+ * a kref_get occurs. When the channel is freed, the corresponding kref_put
* happens. The device's release function does a completion, so
* unregister_device does a remove event, device_unregister, a kref_put
* for the first reference, then waits on the completion for all other
* Each channel has an open-coded implementation of Rusty Russell's "bigref,"
* with a kref and a per_cpu local_t. A dma_chan_get is called when a client
* signals that it wants to use a channel, and dma_chan_put is called when
- * a channel is removed or a client using it is unregesitered. A client can
+ * a channel is removed or a client using it is unregistered. A client can
* take extra references per outstanding transaction, as is the case with
* the NET DMA client. The release function does a kref_put on the device.
* -ChrisL, DanW
BUG_ON(!device->device_alloc_chan_resources);
BUG_ON(!device->device_free_chan_resources);
- BUG_ON(!device->device_dependency_added);
BUG_ON(!device->device_is_tx_complete);
BUG_ON(!device->device_issue_pending);
BUG_ON(!device->dev);
dma_src = dma_map_single(dev->dev, src, len, DMA_TO_DEVICE);
dma_dest = dma_map_single(dev->dev, dest, len, DMA_FROM_DEVICE);
- tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+ DMA_CTRL_ACK);
if (!tx) {
dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
return -ENOMEM;
}
- tx->ack = 1;
tx->callback = NULL;
cookie = tx->tx_submit(tx);
dma_src = dma_map_single(dev->dev, kdata, len, DMA_TO_DEVICE);
dma_dest = dma_map_page(dev->dev, page, offset, len, DMA_FROM_DEVICE);
- tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+ DMA_CTRL_ACK);
if (!tx) {
dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
return -ENOMEM;
}
- tx->ack = 1;
tx->callback = NULL;
cookie = tx->tx_submit(tx);
dma_src = dma_map_page(dev->dev, src_pg, src_off, len, DMA_TO_DEVICE);
dma_dest = dma_map_page(dev->dev, dest_pg, dest_off, len,
DMA_FROM_DEVICE);
- tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+ DMA_CTRL_ACK);
if (!tx) {
dma_unmap_page(dev->dev, dma_src, len, DMA_TO_DEVICE);
return -ENOMEM;
}
- tx->ack = 1;
tx->callback = NULL;
cookie = tx->tx_submit(tx);
{
tx->chan = chan;
spin_lock_init(&tx->lock);
- INIT_LIST_HEAD(&tx->depend_node);
- INIT_LIST_HEAD(&tx->depend_list);
}
EXPORT_SYMBOL(dma_async_tx_descriptor_init);