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PCI: Allow root and child buses to have different pci_ops

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PCI host bridges often have different ways to access the root and child
bus config spaces. The host bridge drivers have invented their own
abstractions to handle this. Let's support having different root and
child bus pci_ops so these per driver abstractions can be removed.

Link: https://lore.kernel.org/r/20200821035420.380495-2-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rob Herring
2020-08-20 21:53:41 -06:00
committed by Lorenzo Pieralisi
parent 16270a9235
commit 07e292950b
2 changed files with 8 additions and 1 deletions
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1
include/linux/pci.h
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@@ -523,6 +523,7 @@ struct pci_host_bridge {
struct device dev;
struct pci_bus *bus; /* Root bus */
struct pci_ops *ops;
struct pci_ops *child_ops;
void *sysdata;
int busnr;
struct list_head windows; /* resource_entry */