From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rcsinet15.oracle.com ([148.87.113.117]:35490 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753764Ab2IYI0l (ORCPT ); Tue, 25 Sep 2012 04:26:41 -0400 From: Yinghai Lu To: Bjorn Helgaas , Len Brown Cc: linux-pci@vger.kernel.org, Yinghai Lu Subject: [PATCH 12/29] PCI: Add for_each_pci_host_bridge() and pci_get_next_host_bridge Date: Tue, 25 Sep 2012 01:26:13 -0700 Message-Id: <1348561590-28067-13-git-send-email-yinghai@kernel.org> In-Reply-To: <1348561590-28067-1-git-send-email-yinghai@kernel.org> References: <1348561590-28067-1-git-send-email-yinghai@kernel.org> Sender: linux-pci-owner@vger.kernel.org List-ID: use bus_find_device to loop host_bridges. Signed-off-by: Yinghai Lu --- drivers/pci/search.c | 23 +++++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/pci/search.c b/drivers/pci/search.c index bf969ba..f072b54 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -178,6 +178,29 @@ struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, } EXPORT_SYMBOL(pci_get_domain_bus_and_slot); +static int match_pci_host_bridge(struct device *dev, void *data) +{ + return 1; +} + +struct pci_host_bridge *pci_get_next_host_bridge(struct pci_host_bridge *from) +{ + struct device *dev; + struct device *dev_start = NULL; + struct pci_host_bridge *bridge = NULL; + + WARN_ON(in_interrupt()); + if (from) + dev_start = &from->dev; + dev = bus_find_device(&pci_host_bridge_bus_type, dev_start, NULL, + match_pci_host_bridge); + if (dev) + bridge = to_pci_host_bridge(dev); + if (from) + put_device(&from->dev); + return bridge; +} + static int match_pci_dev_by_id(struct device *dev, void *data) { struct pci_dev *pdev = to_pci_dev(dev); diff --git a/include/linux/pci.h b/include/linux/pci.h index cc8b558..1e45d6f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -394,6 +394,8 @@ struct pci_host_bridge { }; #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) +#define for_each_pci_host_bridge(d) while (d = pci_get_next_host_bridge(d)) + void pci_set_host_bridge_release(struct pci_host_bridge *bridge, void (*release_fn)(struct pci_host_bridge *), void *release_data); @@ -758,6 +760,7 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); struct pci_bus *pci_find_next_bus(const struct pci_bus *from); +struct pci_host_bridge *pci_get_next_host_bridge(struct pci_host_bridge *from); struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from); struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, -- 1.7.7