Function prototype or declaration at drivers/dma/virt-dma.h, line 46 References: drivers/dma/amba-pl08x.c, line 1577 drivers/dma/dma-jz4780.c, line 648 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c, line 284 drivers/dma/dw-edma/dw-edma-core.c, line 313 drivers/dma/fsl-edma-common.c, line 329 drivers/dma/imx-sdma.c, line 1719 drivers/dma/milbeaut-hdmac.c, line 364 drivers/dma/moxart-dma.c, line 493 drivers/dma/owl-dma.c, line 821 drivers/dma/pxa_dma.c, line 1140 drivers/dma/qcom/bam_dma.c, line 921 drivers/dma/qcom/qcom_adm.c, line 634 drivers/dma/s3c24xx-dma.c, line 780 drivers/dma/sa11x0-dma.c, line 441 drivers/dma/sf-pdma/sf-pdma.c, line 184 drivers/dma/sprd-dma.c, line 676 drivers/dma/stm32-dma.c, line 1183 drivers/dma/stm32-mdma.c, line 1321 drivers/dma/sun4i-dma.c, line 961 drivers/dma/sun6i-dma.c, line 946 drivers/dma/tegra210-adma.c, line 523