The patch moves pcibios_find_pci_bus() to PPC kerenl directory so
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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