diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-11-06 19:19:39 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-11-17 15:22:07 -0400 |
| commit | 4d34d52c25a042e8fdfcaed9715774759394e32e (patch) | |
| tree | 4b69ca7c75891a894d3726551342d5967fa7f5c2 /drivers/pci/p2pdma.c | |
| parent | 5a7a9e038b032137ae9c45d5429f18a2ffdf7d42 (diff) | |
PCI/P2PDMA: Remove the DMA_VIRT_OPS hacks
Now that all users of dma_virt_ops are gone we can remove the workaround
for it in the PCI peer to peer code.
Link: https://lore.kernel.org/r/20201106181941.1878556-9-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/pci/p2pdma.c')
| -rw-r--r-- | drivers/pci/p2pdma.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index de1c331dbed4..b07018af5387 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -556,15 +556,6 @@ int pci_p2pdma_distance_many(struct pci_dev *provider, struct device **clients, return -1; for (i = 0; i < num_clients; i++) { -#ifdef CONFIG_DMA_VIRT_OPS - if (clients[i]->dma_ops == &dma_virt_ops) { - if (verbose) - dev_warn(clients[i], - "cannot be used for peer-to-peer DMA because the driver makes use of dma_virt_ops\n"); - return -1; - } -#endif - pci_client = find_parent_pci_dev(clients[i]); if (!pci_client) { if (verbose) @@ -837,17 +828,6 @@ static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap, phys_addr_t paddr; int i; - /* - * p2pdma mappings are not compatible with devices that use - * dma_virt_ops. If the upper layers do the right thing - * this should never happen because it will be prevented - * by the check in pci_p2pdma_distance_many() - */ -#ifdef CONFIG_DMA_VIRT_OPS - if (WARN_ON_ONCE(dev->dma_ops == &dma_virt_ops)) - return 0; -#endif - for_each_sg(sg, s, nents, i) { paddr = sg_phys(s); |