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PCI: Add generic function to probe PCI host controllers

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This patchs moves generic source code from
drivers/pci/host/pci-host-common.c into drivers/pci/probe.c.

Indeed the extracted lines of code were duplicated by many host
controller drivers. Regrouping them into a generic function gives a
change to properly share this code without introducing a useless
dependency to PCI_HOST_COMMON, which selects PCI_ECAM when not needed by
most host controller drivers.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Cyrille Pitchen 2018-01-30 21:56:52 +01:00 • committed by Lorenzo Pieralisi
parent c6dd8ecf30
commit 49b8e3f3ed
3 changed files with 35 additions and 21 deletions
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1
include/linux/pci.h
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@ -887,6 +887,7 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
int pci_host_probe(struct pci_host_bridge *bridge);
int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
void pci_bus_release_busn_res(struct pci_bus *b);