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| author |   Logan Gunthorpe <logang@deltatee.com> | 2019-08-12 11:30:43 -0600 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2019-08-16 08:41:26 -0500 |
| commit | 7f73eac3a7137eabfb0c005c7ba55eb7994b9673 (patch) | |
| tree | 71b1700c9f04a1a35c9abdc59a4b7104dff03901 /drivers/infiniband/core/rw.c | |
| parent | PCI/P2PDMA: Add attrs argument to pci_p2pdma_map_sg() (diff) | |
| download | linux-dev-7f73eac3a7137eabfb0c005c7ba55eb7994b9673.tar.xz linux-dev-7f73eac3a7137eabfb0c005c7ba55eb7994b9673.zip | |
PCI/P2PDMA: Introduce pci_p2pdma_unmap_sg()
Add pci_p2pdma_unmap_sg() to the two places that call pci_p2pdma_map_sg().
This is a prep patch to introduce correct mappings for p2pdma transactions
that go through the root complex.
Link: https://lore.kernel.org/r/20190730163545.4915-10-logang@deltatee.com
Link: https://lore.kernel.org/r/20190812173048.9186-10-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/infiniband/core/rw.c')
| -rw-r--r-- | drivers/infiniband/core/rw.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c index dce06108c8c3..5337393d4dfe 100644 --- a/drivers/infiniband/core/rw.c +++ b/drivers/infiniband/core/rw.c @@ -583,8 +583,10 @@ void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num, break; } - /* P2PDMA contexts do not need to be unmapped */ - if (!is_pci_p2pdma_page(sg_page(sg))) + if (is_pci_p2pdma_page(sg_page(sg))) + pci_p2pdma_unmap_sg(qp->pd->device->dma_device, sg, + sg_cnt, dir); + else ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir); } EXPORT_SYMBOL(rdma_rw_ctx_destroy); |