[PATCH v2 20/21] dma-mapping: return error code from dma_dummy_map_sg()
From: Logan Gunthorpe <logang@deltatee.com>
Date: 2021-07-23 17:50:29
Also in:
linux-alpha, linux-arm-kernel, linux-iommu, linux-mips, linux-s390, lkml, sparclinux, xen-devel
Subsystem:
dma mapping helpers, the rest · Maintainers:
Marek Szyprowski, Linus Torvalds
From: Martin Oliveira <redacted> The .map_sg() op now expects an error code instead of zero on failure. The only errno to return is -EINVAL in the case when DMA is not supported. Signed-off-by: Martin Oliveira <redacted> Signed-off-by: Logan Gunthorpe <logang@deltatee.com> --- kernel/dma/dummy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/dummy.c b/kernel/dma/dummy.c
index eacd4c5b10bf..b492d59ac77e 100644
--- a/kernel/dma/dummy.c
+++ b/kernel/dma/dummy.c@@ -22,7 +22,7 @@ static int dma_dummy_map_sg(struct device *dev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, unsigned long attrs) { - return 0; + return -EINVAL; } static int dma_dummy_supported(struct device *hwdev, u64 mask)
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2.20.1