[PATCH -v2 01/26] PCI: Add pci_dev_resource_n()

[Yinghai Lu]

Prepare to use it with addon_resource and for_each_resource macro.

Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
 drivers/pci/probe.c |   10 ++++++++++
 include/linux/pci.h |    2 ++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index d626c4e..87e87b5 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -75,6 +75,16 @@ static int __init pcibus_class_init(void)
 }
 postcore_initcall(pcibus_class_init);
 
+struct resource *pci_dev_resource_n(struct pci_dev *dev, int n)
+{
+	struct pci_dev_addon_resource *addon_res;
+
+	if (n < PCI_NUM_RESOURCES)
+		return &dev->resource[n];
+
+	return NULL;
+}
+
 static u64 pci_size(u64 base, u64 maxbase, u64 mask)
 {
 	u64 size = mask & maxbase;	/* Find the significant bits */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 161f6c0..bb81080 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -347,6 +347,8 @@ struct pci_dev {
 #endif
 };
 
+struct resource *pci_dev_resource_n(struct pci_dev *dev, int n);
+
 static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
 {
 #ifdef CONFIG_PCI_IOV
-- 
1.7.7

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