dmaengine: td: Rename device_control

Rename the device_control callback of the Timberdal DMA driver to terminate_all
since it's all it's really doing. That will eventually be used to retrieve
slave capabilities.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/timb_dma.c

@@ -561,8 +561,7 @@ static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan,
 	return &td_desc->txd;
 }
 
-static int td_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
-		      unsigned long arg)
+static int td_terminate_all(struct dma_chan *chan)
 {
 	struct timb_dma_chan *td_chan =
 		container_of(chan, struct timb_dma_chan, chan);
@@ -570,9 +569,6 @@ static int td_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
 
 	dev_dbg(chan2dev(chan), "%s: Entry\n", __func__);
 
-	if (cmd != DMA_TERMINATE_ALL)
-		return -ENXIO;
-
 	/* first the easy part, put the queue into the free list */
 	spin_lock_bh(&td_chan->lock);
 	list_for_each_entry_safe(td_desc, _td_desc, &td_chan->queue,
@@ -697,7 +693,7 @@ static int td_probe(struct platform_device *pdev)
 	dma_cap_set(DMA_SLAVE, td->dma.cap_mask);
 	dma_cap_set(DMA_PRIVATE, td->dma.cap_mask);
 	td->dma.device_prep_slave_sg = td_prep_slave_sg;
-	td->dma.device_control = td_control;
+	td->dma.device_terminate_all = td_terminate_all;
 
 	td->dma.dev = &pdev->dev;