On 2014/3/4 23:50, Liviu Dudau wrote: > Before commit 7b5436635800 the pci_host_bridge was created before the root bus. > As that commit has added a needless dependency on the bus for pci_alloc_host_bridge() > the creation order has been changed for no good reason. Revert the order of > creation as we are going to depend on the pci_host_bridge structure to retrieve the > domain number of the root bus. > > Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx> > > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c > index 6e34498..78ccba0 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -505,7 +505,7 @@ static void pci_release_host_bridge_dev(struct device *dev) > kfree(bridge); > } > > -static struct pci_host_bridge *pci_alloc_host_bridge(struct pci_bus *b) > +static struct pci_host_bridge *pci_alloc_host_bridge(void) > { > struct pci_host_bridge *bridge; > > @@ -514,7 +514,6 @@ static struct pci_host_bridge *pci_alloc_host_bridge(struct pci_bus *b) > return NULL; > > INIT_LIST_HEAD(&bridge->windows); > - bridge->bus = b; > return bridge; > } > > @@ -1727,9 +1726,21 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, > char bus_addr[64]; > char *fmt; > > + bridge = pci_alloc_host_bridge(); > + if (!bridge) > + return NULL; > + > + bridge->dev.parent = parent; > + bridge->dev.release = pci_release_host_bridge_dev; > + error = pcibios_root_bridge_prepare(bridge); > + if (error) { > + kfree(bridge); > + return NULL; What about use goto err_out? > + } > + > b = pci_alloc_bus(); > if (!b) > - return NULL; > + goto err_out; > > b->sysdata = sysdata; > b->ops = ops; > @@ -1738,26 +1749,15 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, > if (b2) { > /* If we already got to this bus through a different bridge, ignore it */ > dev_dbg(&b2->dev, "bus already known\n"); > - goto err_out; > + goto err_bus_out; > } > > - bridge = pci_alloc_host_bridge(b); > - if (!bridge) > - goto err_out; > - > - bridge->dev.parent = parent; > - bridge->dev.release = pci_release_host_bridge_dev; > + bridge->bus = b; > dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus); > - error = pcibios_root_bridge_prepare(bridge); > - if (error) { > - kfree(bridge); > - goto err_out; > - } > - > error = device_register(&bridge->dev); > if (error) { > put_device(&bridge->dev); > - goto err_out; > + goto err_bus_out; > } > b->bridge = get_device(&bridge->dev); > device_enable_async_suspend(b->bridge); > @@ -1814,8 +1814,10 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, > class_dev_reg_err: > put_device(&bridge->dev); > device_unregister(&bridge->dev); > -err_out: > +err_bus_out: > kfree(b); > +err_out: > + kfree(bridge); > return NULL; > } > > -- Thanks! Yijing -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html