Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752612AbaDYJ0E (ORCPT ); Fri, 25 Apr 2014 05:26:04 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:45838 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752434AbaDYJTp (ORCPT ); Fri, 25 Apr 2014 05:19:45 -0400 From: Yijing Wang To: Bjorn Helgaas CC: , , Tony Luck , , "David S. Miller" , , Thomas Gleixner , , Benjamin Herrenschmidt , Yijing Wang Subject: [PATCH 02/13] PCI: Introduce new pci_is_bridge() helper function Date: Fri, 25 Apr 2014 17:18:24 +0800 Message-ID: <1398417515-8740-3-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.11.msysgit.1 In-Reply-To: <1398417515-8740-1-git-send-email-wangyijing@huawei.com> References: <1398417515-8740-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.27.212] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PCIe Spec define the PCI bridge is the PCI device which header type(bit 0 through 6) is 0x1(PCI bridge) or 0x2(CardBus bridge). Signed-off-by: Yijing Wang --- include/linux/pci.h | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/include/linux/pci.h b/include/linux/pci.h index aab57b4..827077a 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -477,6 +477,12 @@ static inline bool pci_is_root_bus(struct pci_bus *pbus) return !(pbus->parent); } +static inline bool pci_is_bridge(struct pci_dev *dev) +{ + return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || + dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; +} + static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) { dev = pci_physfn(dev); -- 1.7.1 -- 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/