[PATCH v1 02/16] dma-direct: Return appropriate error code from dma_direct_map_sg()
From: Logan Gunthorpe <logang@deltatee.com>
Date: 2021-07-15 16:46:17
Also in:
linux-alpha, linux-iommu, linux-mips, linux-s390, linuxppc-dev, lkml, sparclinux, xen-devel
Subsystem:
dma mapping helpers, the rest · Maintainers:
Marek Szyprowski, Linus Torvalds
Now that the map_sg() op expects error codes instead of return zero on error, convert dma_direct_map_sg() to return an error code. The only error to return presently is EINVAL if a page could not be mapped. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> --- kernel/dma/direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index f737e3347059..803ee9321170 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c@@ -411,7 +411,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents, out_unmap: dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); - return 0; + return -EINVAL; } dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,
--
2.20.1
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