diff mbox series

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

Message ID 20190812173048.9186-3-logang@deltatee.com (mailing list archive)
State Mainlined, archived
Commit 0afea3814358c97e2964710ba16fbb0b54ceda0e
Headers show
Series PCI/P2PDMA: Support transactions that hit the host bridge | expand

Commit Message

Logan Gunthorpe Aug. 12, 2019, 5:30 p.m. UTC 
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(+)

Comments

Christoph Hellwig Aug. 16, 2019, 8:06 a.m. UTC | #1 
On Mon, Aug 12, 2019 at 11:30:36AM -0600, Logan Gunthorpe wrote:
> 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>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

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);