linux-kernel - [PATCH v4 25/29] PCI: Update pci_resource_bar() to support addon

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Message-Id: <1365806683-26717-26-git-send-email-yinghai@kernel.org>
Date:	Fri, 12 Apr 2013 15:44:39 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>, Ram Pai <linuxram@...ibm.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v4 25/29] PCI: Update pci_resource_bar() to support addon_resource

Need to loop addon resource list to retrieve reg_addr in it.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 drivers/pci/pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c1010be..7677c6b 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3613,6 +3613,13 @@ int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
 		reg = pci_iov_resource_bar(dev, resno, type);
 		if (reg)
 			return reg;
+	} else if (resno >= PCI_NUM_RESOURCES) {
+		struct resource *res = pci_dev_resource_n(dev, resno);
+
+		if (res) {
+			*type = pci_bar_unknown;
+			return to_pci_dev_addon_resource(res)->reg_addr;
+		}
 	}
 
 	dev_err(&dev->dev, "BAR %d: invalid resource\n", resno);
-- 
1.8.1.4

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