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spi: pic32: Use proper enum in dmaengine_prep_slave_rg 

Clang warns when one enumerated type is converted implicitly to another:

drivers/spi/spi-pic32.c:323:8: warning: implicit conversion from
enumeration type 'enum dma_data_direction' to different enumeration type
'enum dma_transfer_direction' [-Wenum-conversion]
                                          DMA_FROM_DEVICE,
                                          ^~~~~~~~~~~~~~~
drivers/spi/spi-pic32.c:333:8: warning: implicit conversion from
enumeration type 'enum dma_data_direction' to different enumeration type
'enum dma_transfer_direction' [-Wenum-conversion]
                                          DMA_TO_DEVICE,
                                          ^~~~~~~~~~~~~
2 warnings generated.

Use the proper enums from dma_transfer_direction (DMA_FROM_DEVICE =
DMA_DEV_TO_MEM = 2, DMA_TO_DEVICE = DMA_MEM_TO_DEV = 1) to satify Clang.

Link: https://github.com/ClangBuiltLinux/linux/issues/159
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Nathan Chancellor 2018-09-20 16:13:37 -07:00 committed by Mark Brown
parent 380583227c
commit 8cfde7847d
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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-pic32.c
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@ -320,7 +320,7 @@ static int pic32_spi_dma_transfer(struct pic32_spi *pic32s,
desc_rx = dmaengine_prep_slave_sg(master->dma_rx,
xfer->rx_sg.sgl,
xfer->rx_sg.nents,
DMA_FROM_DEVICE,
DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_rx) {
ret = -EINVAL;
@ -330,7 +330,7 @@ static int pic32_spi_dma_transfer(struct pic32_spi *pic32s,
desc_tx = dmaengine_prep_slave_sg(master->dma_tx,
xfer->tx_sg.sgl,
xfer->tx_sg.nents,
DMA_TO_DEVICE,
DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_tx) {
ret = -EINVAL;