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authorLogan Gunthorpe <logang@deltatee.com>2019-08-12 20:30:42 +0300
committerBjorn Helgaas <bhelgaas@google.com>2019-08-16 16:41:15 +0300
commit2b9f4bb2a4fb77da4862f9ddf5209de2bcdaa0c0 (patch)
treefa5ea414b73d49f329c5c7d4bb153d29c9a0c0ed /drivers/pci/p2pdma.c
parent494d63b0d5d0a481f6ac23bc61e94647ab9c4390 (diff)
downloadlinux-2b9f4bb2a4fb77da4862f9ddf5209de2bcdaa0c0.tar.xz
PCI/P2PDMA: Add attrs argument to pci_p2pdma_map_sg()
This is to match the dma_map_sg() API which this function will have to call in an future patch. Add a pci_p2pdma_map_sg_attrs() function and helper to call it with no attributes just like the dma_map_sg() function. Link: https://lore.kernel.org/r/20190730163545.4915-9-logang@deltatee.com Link: https://lore.kernel.org/r/20190812173048.9186-9-logang@deltatee.com Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/pci/p2pdma.c')
-rw-r--r--drivers/pci/p2pdma.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 2c4a8e92ed64..94fbacbcbbd0 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -798,13 +798,14 @@ EXPORT_SYMBOL_GPL(pci_p2pmem_publish);
* @sg: scatter list to map
* @nents: elements in the scatterlist
* @dir: DMA direction
+ * @attrs: DMA attributes passed to dma_map_sg() (if called)
*
* Scatterlists mapped with this function should not be unmapped in any way.
*
* Returns the number of SG entries mapped or 0 on error.
*/
-int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir)
+int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir, unsigned long attrs)
{
struct pci_p2pdma_pagemap *p2p_pgmap;
struct scatterlist *s;
@@ -831,7 +832,7 @@ int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
return nents;
}
-EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg);
+EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg_attrs);
/**
* pci_p2pdma_enable_store - parse a configfs/sysfs attribute store