Change the way PCI bus domain number is assigned and improve function
name to reflect what function does. No functional changes.
Instead of assigning bus domain number inside of pci_bus_assign_domain_nr()
simply return domain number and let pci_create_root_bus() do assignment.
This way pci_create_root_bus() setups bus structure data in the consistent
way. Since pci_bus_assign_domain_nr() now does not assign but retrieves
domain number instead, rename it to pci_bus_find_domain_nr().
Signed-off-by: Tomasz Nowicki <tn@xxxxxxxxxxxx>
---
drivers/pci/pci.c | 4 ++--
drivers/pci/probe.c | 4 +++-
include/linux/pci.h | 7 +------
3 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index eb431b5..b9a7833 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4941,7 +4941,7 @@ int pci_get_new_domain_nr(void)
}
#ifdef CONFIG_PCI_DOMAINS_GENERIC
-void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
+int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent)
{
static int use_dt_domains = -1;
int domain = -1;
@@ -4985,7 +4985,7 @@ void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
domain = -1;
}
- bus->domain_nr = domain;
+ return domain;
}
#endif
#endif
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8e3ef72..380d46d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2127,7 +2127,9 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
b->sysdata = sysdata;
b->ops = ops;
b->number = b->busn_res.start = bus;
- pci_bus_assign_domain_nr(b, parent);
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
+ b->domain_nr = pci_bus_find_domain_nr(b, parent);
+#endif
b2 = pci_find_bus(pci_domain_nr(b), bus);
if (b2) {
/* If we already got to this bus through a different bridge, ignore it */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index ce03d65..48839e8 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1390,12 +1390,7 @@ static inline int pci_domain_nr(struct pci_bus *bus)
{
return bus->domain_nr;
}
-void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent);
-#else
-static inline void pci_bus_assign_domain_nr(struct pci_bus *bus,
- struct device *parent)
-{
-}
+int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent);
#endif
/* some architectures require additional setup to direct VGA traffic */
--
1.9.1
--
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