[PATCH v3 02/14] PCI/P2PDMA: Add provider's pci_dev to pci_p2pdma_pagemap struct

Logan Gunthorpe
2019-08-12T17:31:50Z

The provider will be needed to figure out how to map a device.

Link: https://lore.kernel.org/r/20190730163545.4915-3-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
drivers/pci/p2pdma.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 03e9c887bdfb..93fbda14f4a9 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -27,6 +27,7 @@ struct pci_p2pdma {

struct pci_p2pdma_pagemap {
struct dev_pagemap pgmap;
+ struct pci_dev *provider;
u64 bus_offset;
};

@@ -178,6 +179,7 @@ int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar, size_t size,
pgmap->res.flags = pci_resource_flags(pdev, bar);
pgmap->type = MEMORY_DEVICE_PCI_P2PDMA;

+ p2p_pgmap->provider = pdev;
p2p_pgmap->bus_offset = pci_bus_address(pdev, bar) -
pci_resource_start(pdev, bar);

--
2.20.1