From 7f73eac3a7137eabfb0c005c7ba55eb7994b9673 Mon Sep 17 00:00:00 2001 From: Logan Gunthorpe Date: Mon, 12 Aug 2019 11:30:43 -0600 Subject: 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 Signed-off-by: Bjorn Helgaas Reviewed-by: Christoph Hellwig --- drivers/infiniband/core/rw.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/infiniband/core') 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); -- cgit v1.2.3