On Tue, Apr 19, 2016 at 03:48:26PM +1000, Alexey Kardashevskiy wrote:
>On 02/17/2016 02:44 PM, Gavin Shan wrote:
>>This implements and exports pci_remove_device_node_info(). It's
>>used to remove the pdn (struct pci_dn) for the indicated device
>>node. The function is going to be used by PowerNV PCI hotplug
>>driver.
>>
>>Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
>
>Kind of strange that there is no such helper for pseries, is there?
>
I don't find one actually. If you find one, pls let me know, thanks!
>
>Reviewed-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
>
>
>>---
>> arch/powerpc/include/asm/pci-bridge.h | 1 +
>> arch/powerpc/kernel/pci_dn.c | 23 +++++++++++++++++++++++
>> 2 files changed, 24 insertions(+)
>>
>>diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
>>index 72a9d4e..c6310e2 100644
>>--- a/arch/powerpc/include/asm/pci-bridge.h
>>+++ b/arch/powerpc/include/asm/pci-bridge.h
>>@@ -240,6 +240,7 @@ extern struct pci_dn *add_dev_pci_data(struct pci_dev *pdev);
>> extern void remove_dev_pci_data(struct pci_dev *pdev);
>> extern struct pci_dn *pci_add_device_node_info(struct pci_controller *hose,
>> struct device_node *dn);
>>+extern void pci_remove_device_node_info(struct device_node *dn);
>>
>> static inline int pci_device_from_OF_node(struct device_node *np,
>> u8 *bus, u8 *devfn)
>>diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
>>index 0a249ff..ce10281 100644
>>--- a/arch/powerpc/kernel/pci_dn.c
>>+++ b/arch/powerpc/kernel/pci_dn.c
>>@@ -331,6 +331,29 @@ struct pci_dn *pci_add_device_node_info(struct pci_controller *hose,
>> }
>> EXPORT_SYMBOL_GPL(pci_add_device_node_info);
>>
>>+void pci_remove_device_node_info(struct device_node *dn)
>>+{
>>+ struct pci_dn *pdn = dn ? PCI_DN(dn) : NULL;
>>+#ifdef CONFIG_EEH
>>+ struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
>>+
>>+ if (edev)
>>+ edev->pdn = NULL;
>>+#endif
>>+
>>+ if (!pdn)
>>+ return;
>>+
>>+ WARN_ON(!list_empty(&pdn->child_list));
>>+ list_del(&pdn->list);
>>+ if (pdn->parent)
>>+ of_node_put(pdn->parent->node);
>>+
>>+ dn->data = NULL;
>>+ kfree(pdn);
>>+}
>>+EXPORT_SYMBOL_GPL(pci_remove_device_node_info);
>>+
>> /*
>> * Traverse a device tree stopping each PCI device in the tree.
>> * This is done depth first. As each node is processed, a "pre"
>>
>
>
>--
>Alexey
>
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