Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757981Ab3DLWrq (ORCPT ); Fri, 12 Apr 2013 18:47:46 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:47878 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757803Ab3DLWrp (ORCPT ); Fri, 12 Apr 2013 18:47:45 -0400 From: Yinghai Lu To: Bjorn Helgaas , Ram Pai Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v4 04/29] PCI: Add pci_dev_resource_idx() helper Date: Fri, 12 Apr 2013 15:44:18 -0700 Message-Id: <1365806683-26717-5-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1365806683-26717-1-git-send-email-yinghai@kernel.org> References: <1365806683-26717-1-git-send-email-yinghai@kernel.org> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1547 Lines: 51 Use resource pointer to get index in pci resources array/list. -v2: export symbol for acpiphp compiling error, found by Steven Newbury Signed-off-by: Yinghai Lu --- drivers/pci/probe.c | 9 +++++++++ include/linux/pci.h | 1 + 2 files changed, 10 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 9cb3eb3..1df75f7 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -114,6 +114,15 @@ struct resource *pci_dev_resource_n(struct pci_dev *dev, int n) } EXPORT_SYMBOL(pci_dev_resource_n); +int pci_dev_resource_idx(struct pci_dev *dev, struct resource *res) +{ + if (res >= dev->resource && + res <= dev->resource + (PCI_NUM_RESOURCES - 1)) + return res - dev->resource; + + return -1; +} + 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 6d450d2..f4da78d 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -354,6 +354,7 @@ struct pci_dev { }; struct resource *pci_dev_resource_n(struct pci_dev *dev, int n); +int pci_dev_resource_idx(struct pci_dev *dev, struct resource *res); static inline struct pci_dev *pci_physfn(struct pci_dev *dev) { -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/