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spi: rspi: use correct enum for DMA transfer direction 

Use enum dma_transfer_direction as required by dmaengine_prep_slave_sg
instead of enum dma_data_direction. This won't change behavior in
practice as the enum values are equivalent.

This fixes two warnings when building with clang:
  drivers/spi/spi-rspi.c:538:26: warning: implicit conversion from enumeration
      type 'enum dma_data_direction' to different enumeration type
      'enum dma_transfer_direction' [-Wenum-conversion]
                                        rx->sgl, rx->nents, DMA_FROM_DEVICE,
                                                            ^~~~~~~~~~~~~~~
  drivers/spi/spi-rspi.c:558:26: warning: implicit conversion from enumeration
      type 'enum dma_data_direction' to different enumeration type
      'enum dma_transfer_direction' [-Wenum-conversion]
                                        tx->sgl, tx->nents, DMA_TO_DEVICE,
                                                            ^~~~~~~~~~~~~

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stefan Agner 2018-03-19 23:16:22 +01:00 committed by Mark Brown
parent 7928b2cbe5
commit 768d59f5d0
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-rspi.c
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@ -535,7 +535,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
/* First prepare and submit the DMA request(s), as this may fail */
if (rx) {
desc_rx = dmaengine_prep_slave_sg(rspi->master->dma_rx,
rx->sgl, rx->nents, DMA_FROM_DEVICE,
rx->sgl, rx->nents, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_rx) {
ret = -EAGAIN;
@ -555,7 +555,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
if (tx) {
desc_tx = dmaengine_prep_slave_sg(rspi->master->dma_tx,
tx->sgl, tx->nents, DMA_TO_DEVICE,
tx->sgl, tx->nents, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_tx) {
ret = -EAGAIN;