spi: sprd: Add a prefix for SPI DMA channel macros

Add a prefix for SPI DMA channel macros to avoid namespace conflicts,
and no functional changes.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-sprd.c

@@ -135,14 +135,14 @@
 #define SPRD_SPI_DMA_STEP		8
 
 enum sprd_spi_dma_channel {
-	SPI_RX,
-	SPI_TX,
-	SPI_MAX,
+	SPRD_SPI_RX,
+	SPRD_SPI_TX,
+	SPRD_SPI_MAX,
 };
 
 struct sprd_spi_dma {
 	bool enable;
-	struct dma_chan *dma_chan[SPI_MAX];
+	struct dma_chan *dma_chan[SPRD_SPI_MAX];
 	enum dma_slave_buswidth width;
 	u32 fragmens_len;
 	u32 rx_len;
@@ -514,7 +514,7 @@ static int sprd_spi_dma_submit(struct dma_chan *dma_chan,
 
 static int sprd_spi_dma_rx_config(struct sprd_spi *ss, struct spi_transfer *t)
 {
-	struct dma_chan *dma_chan = ss->dma.dma_chan[SPI_RX];
+	struct dma_chan *dma_chan = ss->dma.dma_chan[SPRD_SPI_RX];
 	struct dma_slave_config config = {
 		.src_addr = ss->phy_base,
 		.src_addr_width = ss->dma.width,
@@ -532,7 +532,7 @@ static int sprd_spi_dma_rx_config(struct sprd_spi *ss, struct spi_transfer *t)
 
 static int sprd_spi_dma_tx_config(struct sprd_spi *ss, struct spi_transfer *t)
 {
-	struct dma_chan *dma_chan = ss->dma.dma_chan[SPI_TX];
+	struct dma_chan *dma_chan = ss->dma.dma_chan[SPRD_SPI_TX];
 	struct dma_slave_config config = {
 		.dst_addr = ss->phy_base,
 		.src_addr_width = ss->dma.width,
@@ -550,23 +550,23 @@ static int sprd_spi_dma_tx_config(struct sprd_spi *ss, struct spi_transfer *t)
 
 static int sprd_spi_dma_request(struct sprd_spi *ss)
 {
-	ss->dma.dma_chan[SPI_RX] = dma_request_chan(ss->dev, "rx_chn");
-	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPI_RX])) {
-		if (PTR_ERR(ss->dma.dma_chan[SPI_RX]) == -EPROBE_DEFER)
-			return PTR_ERR(ss->dma.dma_chan[SPI_RX]);
+	ss->dma.dma_chan[SPRD_SPI_RX] = dma_request_chan(ss->dev, "rx_chn");
+	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_RX])) {
+		if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]) == -EPROBE_DEFER)
+			return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]);
 
 		dev_err(ss->dev, "request RX DMA channel failed!\n");
-		return PTR_ERR(ss->dma.dma_chan[SPI_RX]);
+		return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]);
 	}
 
-	ss->dma.dma_chan[SPI_TX]  = dma_request_chan(ss->dev, "tx_chn");
-	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPI_TX])) {
-		if (PTR_ERR(ss->dma.dma_chan[SPI_TX]) == -EPROBE_DEFER)
-			return PTR_ERR(ss->dma.dma_chan[SPI_TX]);
+	ss->dma.dma_chan[SPRD_SPI_TX]  = dma_request_chan(ss->dev, "tx_chn");
+	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_TX])) {
+		if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]) == -EPROBE_DEFER)
+			return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
 
 		dev_err(ss->dev, "request TX DMA channel failed!\n");
-		dma_release_channel(ss->dma.dma_chan[SPI_RX]);
-		return PTR_ERR(ss->dma.dma_chan[SPI_TX]);
+		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]);
+		return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
 	}
 
 	return 0;
@@ -574,11 +574,11 @@ static int sprd_spi_dma_request(struct sprd_spi *ss)
 
 static void sprd_spi_dma_release(struct sprd_spi *ss)
 {
-	if (ss->dma.dma_chan[SPI_RX])
-		dma_release_channel(ss->dma.dma_chan[SPI_RX]);
+	if (ss->dma.dma_chan[SPRD_SPI_RX])
+		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]);
 
-	if (ss->dma.dma_chan[SPI_TX])
-		dma_release_channel(ss->dma.dma_chan[SPI_TX]);
+	if (ss->dma.dma_chan[SPRD_SPI_TX])
+		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_TX]);
 }
 
 static int sprd_spi_dma_txrx_bufs(struct spi_device *sdev,