spi/spi-ep93xx.c: use dma_transfer_direction instead of dma_data_direction

A new enum indicating the dma channel direction was introduced by:

commit 49920bc66984a512f4bcc7735a61642cd0e4d6f2
    dmaengine: add new enum dma_transfer_direction

The following commit changed spi-ep93xx to use the new enum:

commit a485df4b4404379786c4bdd258bc528b2617449d
    spi, serial: move to dma_transfer_direction

In doing so a sparse warning was introduced:

warning: mixing different enum types
   int enum dma_data_direction  versus
   int enum dma_transfer_direction

This is produced because the 'dir' passed in ep93xx_spi_dma_prepare
is an enum dma_data_direction and is being used to set the
dma_slave_config 'direction' which is now an enum dma_transfer_direction.

Fix this by converting spi-ep93xx to use the new enum type in all
places.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 6db2887..e805507 100644 (file)
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -545,13 +545,12 @@ static void ep93xx_spi_pio_transfer(struct ep93xx_spi *espi)
  * in case of failure.
  */
 static struct dma_async_tx_descriptor *
-ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir)
+ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_transfer_direction dir)
 {
        struct spi_transfer *t = espi->current_msg->state;
        struct dma_async_tx_descriptor *txd;
        enum dma_slave_buswidth buswidth;
        struct dma_slave_config conf;
-       enum dma_transfer_direction slave_dirn;
        struct scatterlist *sg;
        struct sg_table *sgt;
        struct dma_chan *chan;
@@ -567,14 +566,13 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir)
        memset(&conf, 0, sizeof(conf));
        conf.direction = dir;
 
-       if (dir == DMA_FROM_DEVICE) {
+       if (dir == DMA_DEV_TO_MEM) {
                chan = espi->dma_rx;
                buf = t->rx_buf;
                sgt = &espi->rx_sgt;
 
                conf.src_addr = espi->sspdr_phys;
                conf.src_addr_width = buswidth;
-               slave_dirn = DMA_DEV_TO_MEM;
        } else {
                chan = espi->dma_tx;
                buf = t->tx_buf;
@@ -582,7 +580,6 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir)
 
                conf.dst_addr = espi->sspdr_phys;
                conf.dst_addr_width = buswidth;
-               slave_dirn = DMA_MEM_TO_DEV;
        }
 
        ret = dmaengine_slave_config(chan, &conf);
@@ -633,8 +630,7 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir)
        if (!nents)
                return ERR_PTR(-ENOMEM);
 
-       txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents,
-                                       slave_dirn, DMA_CTRL_ACK);
+       txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, dir, DMA_CTRL_ACK);
        if (!txd) {
                dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir);
                return ERR_PTR(-ENOMEM);
@@ -651,12 +647,12 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir)
  * unmapped.
  */
 static void ep93xx_spi_dma_finish(struct ep93xx_spi *espi,
-                                 enum dma_data_direction dir)
+                                 enum dma_transfer_direction dir)
 {
        struct dma_chan *chan;
        struct sg_table *sgt;
 
-       if (dir == DMA_FROM_DEVICE) {
+       if (dir == DMA_DEV_TO_MEM) {
                chan = espi->dma_rx;
                sgt = &espi->rx_sgt;
        } else {
@@ -677,16 +673,16 @@ static void ep93xx_spi_dma_transfer(struct ep93xx_spi *espi)
        struct spi_message *msg = espi->current_msg;
        struct dma_async_tx_descriptor *rxd, *txd;
 
-       rxd = ep93xx_spi_dma_prepare(espi, DMA_FROM_DEVICE);
+       rxd = ep93xx_spi_dma_prepare(espi, DMA_DEV_TO_MEM);
        if (IS_ERR(rxd)) {
                dev_err(&espi->pdev->dev, "DMA RX failed: %ld\n", PTR_ERR(rxd));
                msg->status = PTR_ERR(rxd);
                return;
        }
 
-       txd = ep93xx_spi_dma_prepare(espi, DMA_TO_DEVICE);
+       txd = ep93xx_spi_dma_prepare(espi, DMA_MEM_TO_DEV);
        if (IS_ERR(txd)) {
-               ep93xx_spi_dma_finish(espi, DMA_FROM_DEVICE);
+               ep93xx_spi_dma_finish(espi, DMA_DEV_TO_MEM);
                dev_err(&espi->pdev->dev, "DMA TX failed: %ld\n", PTR_ERR(rxd));
                msg->status = PTR_ERR(txd);
                return;
@@ -705,8 +701,8 @@ static void ep93xx_spi_dma_transfer(struct ep93xx_spi *espi)
 
        wait_for_completion(&espi->wait);
 
-       ep93xx_spi_dma_finish(espi, DMA_TO_DEVICE);
-       ep93xx_spi_dma_finish(espi, DMA_FROM_DEVICE);
+       ep93xx_spi_dma_finish(espi, DMA_MEM_TO_DEV);
+       ep93xx_spi_dma_finish(espi, DMA_DEV_TO_MEM);
 }
 
 /**