From: Nathan Chancellor natechancellor@gmail.com
[ Upstream commit 900f5e0d8c9edc5dacc57873d22aee2ae699a8e1 ]
Clang warns when one enumerated type is converted implicitly to another.
drivers/mtd/spi-nor/cadence-quadspi.c:962:47: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion] dma_dst = dma_map_single(nor->dev, buf, len, DMA_DEV_TO_MEM); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ ./include/linux/dma-mapping.h:428:66: note: expanded from macro 'dma_map_single' ~~~~~~~~~~~~~~~~~~~~ ^ drivers/mtd/spi-nor/cadence-quadspi.c:997:43: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion] dma_unmap_single(nor->dev, dma_dst, len, DMA_DEV_TO_MEM); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ ./include/linux/dma-mapping.h:429:70: note: expanded from macro 'dma_unmap_single' ~~~~~~~~~~~~~~~~~~~~~~ ^ 2 warnings generated.
Use the proper enums from dma_data_direction to satisfy Clang.
DMA_FROM_DEVICE = DMA_DEV_TO_MEM = 2
Link: https://github.com/ClangBuiltLinux/linux/issues/108 Signed-off-by: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Boris Brezillon boris.brezillon@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/spi-nor/cadence-quadspi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c index 0806c7a81c0f7..04cedd3a2bf66 100644 --- a/drivers/mtd/spi-nor/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/cadence-quadspi.c @@ -972,7 +972,7 @@ static int cqspi_direct_read_execute(struct spi_nor *nor, u_char *buf, return 0; }
- dma_dst = dma_map_single(nor->dev, buf, len, DMA_DEV_TO_MEM); + dma_dst = dma_map_single(nor->dev, buf, len, DMA_FROM_DEVICE); if (dma_mapping_error(nor->dev, dma_dst)) { dev_err(nor->dev, "dma mapping failed\n"); return -ENOMEM; @@ -1007,7 +1007,7 @@ static int cqspi_direct_read_execute(struct spi_nor *nor, u_char *buf, }
err_unmap: - dma_unmap_single(nor->dev, dma_dst, len, DMA_DEV_TO_MEM); + dma_unmap_single(nor->dev, dma_dst, len, DMA_FROM_DEVICE);
return ret; }