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powerpc/eeh: Remove PE at appropriate time

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During PCI hotplug and EEH recovery, the PE hierarchy tree might be
changed due to the PCI topology changes. At later point when the
PCI device is added, the PE will be created dynamically again.

The patch introduces new function to remove EEH devices from the
associated PE. That also can cause that the parent PE is removed
from the PE tree if the parent PE doesn't include valid EEH devices
and child PEs.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan
2012-09-07 22:44:10 +00:00
committed by Benjamin Herrenschmidt
parent 9b84348c92
commit 82e8882f7f
3 changed files with 49 additions and 0 deletions
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arch/powerpc/include/asm/eeh.h
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@@ -167,6 +167,7 @@ static inline void eeh_unlock(void)
typedef void *(*eeh_traverse_func)(void *data, void *flag);
int __devinit eeh_phb_pe_create(struct pci_controller *phb);
int eeh_add_to_parent_pe(struct eeh_dev *edev);
int eeh_rmv_from_parent_pe(struct eeh_dev *edev);
void * __devinit eeh_dev_init(struct device_node *dn, void *data);
void __devinit eeh_dev_phb_init_dynamic(struct pci_controller *phb);