Merge tag 'v3.7-rc4' into upstream-master

Linux 3.7-rc4

1 files changed, 34 insertions, 22 deletions

diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 4894bde4bbf..30faf6d4ab9 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -147,8 +147,6 @@ struct rspi_data {
 	unsigned char spsr;
 
 	/* for dmaengine */
-	struct sh_dmae_slave dma_tx;
-	struct sh_dmae_slave dma_rx;
 	struct dma_chan *chan_tx;
 	struct dma_chan *chan_rx;
 	int irq;
@@ -663,20 +661,16 @@ static irqreturn_t rspi_irq(int irq, void *_sr)
 	return ret;
 }
 
-static bool rspi_filter(struct dma_chan *chan, void *filter_param)
-{
-	chan->private = filter_param;
-	return true;
-}
-
-static void __devinit rspi_request_dma(struct rspi_data *rspi,
-				       struct platform_device *pdev)
+static int __devinit rspi_request_dma(struct rspi_data *rspi,
+				      struct platform_device *pdev)
 {
 	struct rspi_plat_data *rspi_pd = pdev->dev.platform_data;
 	dma_cap_mask_t mask;
+	struct dma_slave_config cfg;
+	int ret;
 
 	if (!rspi_pd)
-		return;
+		return 0;	/* The driver assumes no error. */
 
 	rspi->dma_width_16bit = rspi_pd->dma_width_16bit;
 
@@ -684,21 +678,35 @@ static void __devinit rspi_request_dma(struct rspi_data *rspi,
 	if (rspi_pd->dma_rx_id && rspi_pd->dma_tx_id) {
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
-		rspi->dma_rx.slave_id = rspi_pd->dma_rx_id;
-		rspi->chan_rx = dma_request_channel(mask, rspi_filter,
-						    &rspi->dma_rx);
-		if (rspi->chan_rx)
-			dev_info(&pdev->dev, "Use DMA when rx.\n");
+		rspi->chan_rx = dma_request_channel(mask, shdma_chan_filter,
+						    (void *)rspi_pd->dma_rx_id);
+		if (rspi->chan_rx) {
+			cfg.slave_id = rspi_pd->dma_rx_id;
+			cfg.direction = DMA_DEV_TO_MEM;
+			ret = dmaengine_slave_config(rspi->chan_rx, &cfg);
+			if (!ret)
+				dev_info(&pdev->dev, "Use DMA when rx.\n");
+			else
+				return ret;
+		}
 	}
 	if (rspi_pd->dma_tx_id) {
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
-		rspi->dma_tx.slave_id = rspi_pd->dma_tx_id;
-		rspi->chan_tx = dma_request_channel(mask, rspi_filter,
-						    &rspi->dma_tx);
-		if (rspi->chan_tx)
-			dev_info(&pdev->dev, "Use DMA when tx\n");
+		rspi->chan_tx = dma_request_channel(mask, shdma_chan_filter,
+						    (void *)rspi_pd->dma_tx_id);
+		if (rspi->chan_tx) {
+			cfg.slave_id = rspi_pd->dma_tx_id;
+			cfg.direction = DMA_MEM_TO_DEV;
+			ret = dmaengine_slave_config(rspi->chan_tx, &cfg);
+			if (!ret)
+				dev_info(&pdev->dev, "Use DMA when tx\n");
+			else
+				return ret;
+		}
 	}
+
+	return 0;
 }
 
 static void __devexit rspi_release_dma(struct rspi_data *rspi)
@@ -788,7 +796,11 @@ static int __devinit rspi_probe(struct platform_device *pdev)
 	}
 
 	rspi->irq = irq;
-	rspi_request_dma(rspi, pdev);
+	ret = rspi_request_dma(rspi, pdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "rspi_request_dma failed.\n");
+		goto error4;
+	}
 
 	ret = spi_register_master(master);
 	if (ret < 0) {