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| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2015-08-04 04:27:10 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-08-20 19:02:49 +0200 |
| commit | d2a7926d42b3b46e45b4e44dc3302b2701ec0856 (patch) | |
| tree | 5e7780fed9d456c0e99b0584e2692630876e019d /drivers/pci | |
| parent | ARM/PCI: Replace panic with WARN messages on failures (diff) | |
| download | linux-d2a7926d42b3b46e45b4e44dc3302b2701ec0856.tar.xz linux-d2a7926d42b3b46e45b4e44dc3302b2701ec0856.zip | |
PCI: Add pci_scan_root_bus_msi()
Add a pci_scan_root_bus_msi() interface so an arch can specify the MSI
controller up front. This removes the need for a pcibios callback to set
the MSI controller later.
This is not exported because I'd like to replace the variety of "scan root
bus" interfaces with a single, more extensible interface that can handle
the MSI controller, domain, pci_ops, resources, etc. I hope this interface
is temporary.
[bhelgaas: changelog, split into separate patch]
Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/probe.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index cefd636681b6..9ff4df0db0c3 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2096,8 +2096,9 @@ void pci_bus_release_busn_res(struct pci_bus *b) res, ret ? "can not be" : "is"); } -struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, - struct pci_ops *ops, void *sysdata, struct list_head *resources) +struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus, + struct pci_ops *ops, void *sysdata, + struct list_head *resources, struct msi_controller *msi) { struct resource_entry *window; bool found = false; @@ -2114,6 +2115,8 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, if (!b) return NULL; + b->msi = msi; + if (!found) { dev_info(&b->dev, "No busn resource found for root bus, will use [bus %02x-ff]\n", @@ -2128,6 +2131,13 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, return b; } + +struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, + struct pci_ops *ops, void *sysdata, struct list_head *resources) +{ + return pci_scan_root_bus_msi(parent, bus, ops, sysdata, resources, + NULL); +} EXPORT_SYMBOL(pci_scan_root_bus); struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, |