"Move pcibios_find_pci_bus() from pSeries to generic powerpc code"?
On Thu, Jun 04, 2015 at 04:42:00PM +1000, Gavin Shan wrote:
> The patch moves pcibios_find_pci_bus() to PPC kerenl directory so
s/kerenl/kernel/
> that it can be reused by hotplug code for pSeries and PowerNV
> platform at the same time.
>
> Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
> Acked-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> ---
> v5:
> * Derived from PATCH[v4 12/21]
> ---
> arch/powerpc/kernel/pci-hotplug.c | 36 ++++++++++++++++++++++++++++++
> arch/powerpc/platforms/pseries/pci_dlpar.c | 32 --------------------------
> 2 files changed, 36 insertions(+), 32 deletions(-)
>
> diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c
> index ca392fc..1482bc1 100644
> --- a/arch/powerpc/kernel/pci-hotplug.c
> +++ b/arch/powerpc/kernel/pci-hotplug.c
> @@ -21,6 +21,42 @@
> #include <asm/firmware.h>
> #include <asm/eeh.h>
>
> +static struct pci_bus *find_pci_bus(struct pci_bus *bus,
> + struct device_node *dn)
> +{
> + struct pci_bus *tmp, *child = NULL;
> + struct device_node *busdn;
> +
> + busdn = pci_bus_to_OF_node(bus);
> + if (busdn == dn)
> + return bus;
> +
> + list_for_each_entry(tmp, &bus->children, node) {
> + child = find_pci_bus(tmp, dn);
> + if (child)
> + break;
> + }
> +
> + return child;
> +}
> +
> +/**
> + * pcibios_find_pci_bus - find PCI bus according to the given device node
> + * @dn: Device node
> + *
> + * Find the corresponding PCI bus according to the given device node.
> + */
> +struct pci_bus *pcibios_find_pci_bus(struct device_node *dn)
> +{
> + struct pci_dn *pdn = PCI_DN(dn);
> +
> + if (!pdn || !pdn->phb || !pdn->phb->bus)
> + return NULL;
> +
> + return find_pci_bus(pdn->phb->bus, dn);
> +}
> +EXPORT_SYMBOL_GPL(pcibios_find_pci_bus);
> +
> /**
> * pcibios_release_device - release PCI device
> * @dev: PCI device
> diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
> index 5d4a3df..906dbaa 100644
> --- a/arch/powerpc/platforms/pseries/pci_dlpar.c
> +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
> @@ -34,38 +34,6 @@
>
> #include "pseries.h"
>
> -static struct pci_bus *
> -find_bus_among_children(struct pci_bus *bus,
> - struct device_node *dn)
> -{
> - struct pci_bus *child = NULL;
> - struct pci_bus *tmp;
> - struct device_node *busdn;
> -
> - busdn = pci_bus_to_OF_node(bus);
> - if (busdn == dn)
> - return bus;
> -
> - list_for_each_entry(tmp, &bus->children, node) {
> - child = find_bus_among_children(tmp, dn);
> - if (child)
> - break;
> - };
> - return child;
> -}
> -
> -struct pci_bus *
> -pcibios_find_pci_bus(struct device_node *dn)
> -{
> - struct pci_dn *pdn = dn->data;
> -
> - if (!pdn || !pdn->phb || !pdn->phb->bus)
> - return NULL;
> -
> - return find_bus_among_children(pdn->phb->bus, dn);
> -}
> -EXPORT_SYMBOL_GPL(pcibios_find_pci_bus);
> -
> struct pci_controller *init_phb_dynamic(struct device_node *dn)
> {
> struct pci_controller *phb;
> --
> 2.1.0
>
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