powerpc/eeh: Make eeh_phb_pe_get() public

One of the possible cases indicated by P7IOC interrupt is fenced
PHB. For that case, we need fetch the PE corresponding to the PHB
and disable the PHB and all subordinate PCI buses/devices, recover
from the fenced state and eventually enable the whole PHB. We need
one function to fetch the PHB PE outside eeh_pe.c and the patch is
going to make eeh_phb_pe_get() public for that purpose.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index e32c3c53eb8b8d3b71e06caf0a865667ab1e90dc..4ac6f70025b4db7035eb46ee7e593d023d910191 100644 (file)
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -184,6 +184,7 @@ static inline void eeh_unlock(void)
 
 typedef void *(*eeh_traverse_func)(void *data, void *flag);
 int eeh_phb_pe_create(struct pci_controller *phb);
+struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb);
 int eeh_add_to_parent_pe(struct eeh_dev *edev);
 int eeh_rmv_from_parent_pe(struct eeh_dev *edev, int purge_pe);
 void *eeh_pe_dev_traverse(struct eeh_pe *root,

diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 9d4a9e8562b2229a7791bb8b069dc13c9c2c9a73..71c4544453cf45ed66636d5f9c03c914b368084f 100644 (file)
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -95,7 +95,7 @@ int eeh_phb_pe_create(struct pci_controller *phb)
  * hierarchy tree is composed of PHB PEs. The function is used
  * to retrieve the corresponding PHB PE according to the given PHB.
  */
-static struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb)
+struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb)
 {
        struct eeh_pe *pe;