dmaengine/dma_slave: introduce inline wrappers

Add inline wrappers for device_prep_slave_sg() and device_prep_dma_cyclic()
interfaces to hide new parameter from current users of affected interfaces.
Convert current users to use new wrappers instead of direct calls.
Suggested by Russell King [https://lkml.org/lkml/2012/2/3/269].

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index db7f88a1bdee..f9dcb5379b92 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -483,7 +483,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap)
                 return -EBUSY;
         }
 
-        desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV,
+        desc = dmaengine_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV,
                                              DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc) {
                 dma_unmap_sg(dma_dev->dev, &dmatx->sg, 1, DMA_TO_DEVICE);
@@ -666,7 +666,6 @@ static void pl011_dma_rx_callback(void *data);
 static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap)
 {
         struct dma_chan *rxchan = uap->dmarx.chan;
-        struct dma_device *dma_dev;
         struct pl011_dmarx_data *dmarx = &uap->dmarx;
         struct dma_async_tx_descriptor *desc;
         struct pl011_sgbuf *sgbuf;
@@ -677,8 +676,7 @@ static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap)
         /* Start the RX DMA job */
         sgbuf = uap->dmarx.use_buf_b ?
                 &uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
-        dma_dev = rxchan->device;
-        desc = rxchan->device->device_prep_slave_sg(rxchan, &sgbuf->sg, 1,
+        desc = dmaengine_prep_slave_sg(rxchan, &sgbuf->sg, 1,
                                         DMA_DEV_TO_MEM,
                                         DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         /*