| Message ID | 1386546869-31900-2-git-send-email-yinghai@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Sun, Dec 8, 2013 at 4:54 PM, Yinghai Lu <yinghai@kernel.org> wrote: > For allocating resource under bus path, we do not have dev to pass along, > and we only have bus to use instead. > > -v2: drop pcibios_bus_addr_to_resource(). > > Signed-off-by: Yinghai Lu <yinghai@kernel.org> > Cc: stable@vger.kernel.org > --- > drivers/pci/host-bridge.c | 34 +++++++++++++++++++++------------- > include/linux/pci.h | 5 +++++ > 2 files changed, 26 insertions(+), 13 deletions(-) > > diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c > index a68dc61..c988a30 100644 > --- a/drivers/pci/host-bridge.c > +++ b/drivers/pci/host-bridge.c > @@ -9,22 +9,19 @@ > > #include "pci.h" > > -static struct pci_bus *find_pci_root_bus(struct pci_dev *dev) > +static struct pci_bus *find_pci_root_bus(struct pci_bus *bus) > { > - struct pci_bus *bus; > - > - bus = dev->bus; > while (bus->parent) > bus = bus->parent; > > return bus; > } > > -static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev) > +static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus) > { > - struct pci_bus *bus = find_pci_root_bus(dev); > + struct pci_bus *root_bus = find_pci_root_bus(bus); > > - return to_pci_host_bridge(bus->bridge); > + return to_pci_host_bridge(root_bus->bridge); > } > > void pci_set_host_bridge_release(struct pci_host_bridge *bridge, > @@ -40,10 +37,11 @@ static bool resource_contains(struct resource *res1, struct resource *res2) > return res1->start <= res2->start && res1->end >= res2->end; > } > > -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, > - struct resource *res) > +void __pcibios_resource_to_bus(struct pci_bus *bus, > + struct pci_bus_region *region, > + struct resource *res) > { > - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); > + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); > struct pci_host_bridge_window *window; > resource_size_t offset = 0; > > @@ -60,6 +58,11 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, > region->start = res->start - offset; > region->end = res->end - offset; > } > +void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, > + struct resource *res) > +{ > + __pcibios_resource_to_bus(dev->bus, region, res); > +} > EXPORT_SYMBOL(pcibios_resource_to_bus); > > static bool region_contains(struct pci_bus_region *region1, > @@ -68,10 +71,10 @@ static bool region_contains(struct pci_bus_region *region1, > return region1->start <= region2->start && region1->end >= region2->end; > } > > -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, > - struct pci_bus_region *region) > +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, > + struct pci_bus_region *region) > { > - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); > + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); > struct pci_host_bridge_window *window; > resource_size_t offset = 0; > > @@ -93,4 +96,9 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, > res->start = region->start + offset; > res->end = region->end + offset; > } > +void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, > + struct pci_bus_region *region) > +{ > + __pcibios_bus_to_resource(dev->bus, res, region); > +} > EXPORT_SYMBOL(pcibios_bus_to_resource); > diff --git a/include/linux/pci.h b/include/linux/pci.h > index 1084a15..5c2cf8e 100644 > --- a/include/linux/pci.h > +++ b/include/linux/pci.h > @@ -737,8 +737,13 @@ void pci_fixup_cardbus(struct pci_bus *); > > /* Generic PCI functions used internally */ > > +void __pcibios_resource_to_bus(struct pci_bus *bus, > + struct pci_bus_region *region, > + struct resource *res); > void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, > struct resource *res); > +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, > + struct pci_bus_region *region); > void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, > struct pci_bus_region *region); > void pcibios_scan_specific_bus(int busn); Ugh. Why would we add new functions with "__" prefixes? There are only a handful of callers to pcibios_bus_to_resource() and pcibios_resource_to_bus(). We can just change them to supply a "struct pci_bus *" directly. That's a better match for how the hardware works anyway. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Dec 9, 2013 at 9:52 AM, Bjorn Helgaas <bhelgaas@google.com> wrote: > On Sun, Dec 8, 2013 at 4:54 PM, Yinghai Lu <yinghai@kernel.org> wrote: >> For allocating resource under bus path, we do not have dev to pass along, >> and we only have bus to use instead. >> >> -v2: drop pcibios_bus_addr_to_resource(). >> >> Signed-off-by: Yinghai Lu <yinghai@kernel.org> >> Cc: stable@vger.kernel.org >> --- >> drivers/pci/host-bridge.c | 34 +++++++++++++++++++++------------- >> include/linux/pci.h | 5 +++++ >> 2 files changed, 26 insertions(+), 13 deletions(-) >> >> diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c >> index a68dc61..c988a30 100644 >> --- a/drivers/pci/host-bridge.c >> +++ b/drivers/pci/host-bridge.c >> @@ -9,22 +9,19 @@ >> >> #include "pci.h" >> >> -static struct pci_bus *find_pci_root_bus(struct pci_dev *dev) >> +static struct pci_bus *find_pci_root_bus(struct pci_bus *bus) >> { >> - struct pci_bus *bus; >> - >> - bus = dev->bus; >> while (bus->parent) >> bus = bus->parent; >> >> return bus; >> } >> >> -static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev) >> +static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus) >> { >> - struct pci_bus *bus = find_pci_root_bus(dev); >> + struct pci_bus *root_bus = find_pci_root_bus(bus); >> >> - return to_pci_host_bridge(bus->bridge); >> + return to_pci_host_bridge(root_bus->bridge); >> } >> >> void pci_set_host_bridge_release(struct pci_host_bridge *bridge, >> @@ -40,10 +37,11 @@ static bool resource_contains(struct resource *res1, struct resource *res2) >> return res1->start <= res2->start && res1->end >= res2->end; >> } >> >> -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, >> - struct resource *res) >> +void __pcibios_resource_to_bus(struct pci_bus *bus, >> + struct pci_bus_region *region, >> + struct resource *res) >> { >> - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); >> + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); >> struct pci_host_bridge_window *window; >> resource_size_t offset = 0; >> >> @@ -60,6 +58,11 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, >> region->start = res->start - offset; >> region->end = res->end - offset; >> } >> +void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, >> + struct resource *res) >> +{ >> + __pcibios_resource_to_bus(dev->bus, region, res); >> +} >> EXPORT_SYMBOL(pcibios_resource_to_bus); >> >> static bool region_contains(struct pci_bus_region *region1, >> @@ -68,10 +71,10 @@ static bool region_contains(struct pci_bus_region *region1, >> return region1->start <= region2->start && region1->end >= region2->end; >> } >> >> -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, >> - struct pci_bus_region *region) >> +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, >> + struct pci_bus_region *region) >> { >> - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); >> + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); >> struct pci_host_bridge_window *window; >> resource_size_t offset = 0; >> >> @@ -93,4 +96,9 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, >> res->start = region->start + offset; >> res->end = region->end + offset; >> } >> +void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, >> + struct pci_bus_region *region) >> +{ >> + __pcibios_bus_to_resource(dev->bus, res, region); >> +} >> EXPORT_SYMBOL(pcibios_bus_to_resource); >> diff --git a/include/linux/pci.h b/include/linux/pci.h >> index 1084a15..5c2cf8e 100644 >> --- a/include/linux/pci.h >> +++ b/include/linux/pci.h >> @@ -737,8 +737,13 @@ void pci_fixup_cardbus(struct pci_bus *); >> >> /* Generic PCI functions used internally */ >> >> +void __pcibios_resource_to_bus(struct pci_bus *bus, >> + struct pci_bus_region *region, >> + struct resource *res); >> void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, >> struct resource *res); >> +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, >> + struct pci_bus_region *region); >> void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, >> struct pci_bus_region *region); >> void pcibios_scan_specific_bus(int busn); > > Ugh. Why would we add new functions with "__" prefixes? There are > only a handful of callers to pcibios_bus_to_resource() and > pcibios_resource_to_bus(). We can just change them to supply a > "struct pci_bus *" directly. That's a better match for how the > hardware works anyway. ok, will update that if you prefer that. Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index a68dc61..c988a30 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -9,22 +9,19 @@ #include "pci.h" -static struct pci_bus *find_pci_root_bus(struct pci_dev *dev) +static struct pci_bus *find_pci_root_bus(struct pci_bus *bus) { - struct pci_bus *bus; - - bus = dev->bus; while (bus->parent) bus = bus->parent; return bus; } -static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev) +static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus) { - struct pci_bus *bus = find_pci_root_bus(dev); + struct pci_bus *root_bus = find_pci_root_bus(bus); - return to_pci_host_bridge(bus->bridge); + return to_pci_host_bridge(root_bus->bridge); } void pci_set_host_bridge_release(struct pci_host_bridge *bridge, @@ -40,10 +37,11 @@ static bool resource_contains(struct resource *res1, struct resource *res2) return res1->start <= res2->start && res1->end >= res2->end; } -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, - struct resource *res) +void __pcibios_resource_to_bus(struct pci_bus *bus, + struct pci_bus_region *region, + struct resource *res) { - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); struct pci_host_bridge_window *window; resource_size_t offset = 0; @@ -60,6 +58,11 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, region->start = res->start - offset; region->end = res->end - offset; } +void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, + struct resource *res) +{ + __pcibios_resource_to_bus(dev->bus, region, res); +} EXPORT_SYMBOL(pcibios_resource_to_bus); static bool region_contains(struct pci_bus_region *region1, @@ -68,10 +71,10 @@ static bool region_contains(struct pci_bus_region *region1, return region1->start <= region2->start && region1->end >= region2->end; } -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, - struct pci_bus_region *region) +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, + struct pci_bus_region *region) { - struct pci_host_bridge *bridge = find_pci_host_bridge(dev); + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); struct pci_host_bridge_window *window; resource_size_t offset = 0; @@ -93,4 +96,9 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, res->start = region->start + offset; res->end = region->end + offset; } +void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, + struct pci_bus_region *region) +{ + __pcibios_bus_to_resource(dev->bus, res, region); +} EXPORT_SYMBOL(pcibios_bus_to_resource); diff --git a/include/linux/pci.h b/include/linux/pci.h index 1084a15..5c2cf8e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -737,8 +737,13 @@ void pci_fixup_cardbus(struct pci_bus *); /* Generic PCI functions used internally */ +void __pcibios_resource_to_bus(struct pci_bus *bus, + struct pci_bus_region *region, + struct resource *res); void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res); +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, + struct pci_bus_region *region); void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region); void pcibios_scan_specific_bus(int busn);
For allocating resource under bus path, we do not have dev to pass along, and we only have bus to use instead. -v2: drop pcibios_bus_addr_to_resource(). Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: stable@vger.kernel.org --- drivers/pci/host-bridge.c | 34 +++++++++++++++++++++------------- include/linux/pci.h | 5 +++++ 2 files changed, 26 insertions(+), 13 deletions(-)