/* * General structure definitions for universal mode switching modules * * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria * * If distributed as part of the Linux kernel, the following license terms * apply: * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the named License, * * or any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA * * Otherwise, the following license terms apply: * * * Redistribution and use in source and binary forms, with or without * * modification, are permitted provided that the following conditions * * are met: * * 1) Redistributions of source code must retain the above copyright * * notice, this list of conditions and the following disclaimer. * * 2) Redistributions in binary form must reproduce the above copyright * * notice, this list of conditions and the following disclaimer in the * * documentation and/or other materials provided with the distribution. * * 3) The name of the author may not be used to endorse or promote products * * derived from this software without specific prior written permission. * * * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Author: Thomas Winischhofer * */ #ifndef _SISUSB_STRUCT_H_ #define _SISUSB_STRUCT_H_ struct SiS_St { unsigned char St_ModeID; unsigned short St_ModeFlag; unsigned char St_StTableIndex; unsigned char St_CRT2CRTC; unsigned char St_ResInfo; unsigned char VB_StTVFlickerIndex; unsigned char VB_StTVEdgeIndex; unsigned char VB_StTVYFilterIndex; unsigned char St_PDC; }; struct SiS_StandTable { unsigned char CRT_COLS; unsigned char ROWS; unsigned char CHAR_HEIGHT; unsigned short CRT_LEN; unsigned char SR[4]; unsigned char MISC; unsigned char CRTC[0x19]; unsigned char ATTR[0x14]; unsigned char GRC[9]; }; struct SiS_StResInfo_S { unsigned short HTotal; unsigned short VTotal; }; struct SiS_Ext { unsigned char Ext_ModeID; unsigned short Ext_ModeFlag; unsigned short Ext_VESAID; unsigned char Ext_RESINFO; unsigned char VB_ExtTVFlickerIndex; unsigned char VB_ExtTVEdgeIndex; unsigned char VB_ExtTVYFilterIndex; unsigned char VB_ExtTVYFilterIndexROM661; unsigned char REFindex; char ROMMODEIDX661; }; struct SiS_Ext2 { unsigned short Ext_InfoFlag; unsigned char Ext_CRT1CRTC; unsigned char Ext_CRTVCLK; unsigned char Ext_CRT2CRTC; unsigned char Ext_CRT2CRTC_NS; unsigned char ModeID; unsigned short XRes; unsigned short YRes; unsigned char Ext_PDC; unsigned char Ext_FakeCRT2CRTC; unsigned char Ext_FakeCRT2Clk; }; struct SiS_CRT1Table { unsigned char CR[17]; }; struct SiS_VCLKData { unsigned char SR2B, SR2C; unsigned short CLOCK; }; struct SiS_ModeResInfo { unsigned short HTotal; unsigned short VTotal; unsigned char XChar; unsigned char YChar; }; struct SiS_Private { void *sisusb; unsigned long IOAddress; unsigned long SiS_P3c4; unsigned long SiS_P3d4; unsigned long SiS_P3c0; unsigned long SiS_P3ce; unsigned long SiS_P3c2; unsigned long SiS_P3ca; unsigned long SiS_P3c6; unsigned long SiS_P3c7; unsigned long SiS_P3c8; unsigned long SiS_P3c9; unsigned long SiS_P3cb; unsigned long SiS_P3cc; unsigned long SiS_P3cd; unsigned long SiS_P3da; unsigned long SiS_Part1Port; unsigned char SiS_MyCR63; unsigned short SiS_CRT1Mode; unsigned short SiS_ModeType; unsigned short SiS_SetFlag; const struct SiS_StandTable *SiS_StandTable; const struct SiS_St *SiS_SModeIDTable; const struct SiS_Ext *SiS_EModeIDTable; const struct SiS_Ext2 *SiS_RefIndex; const struct SiS_CRT1Table *SiS_CRT1Table; const struct SiS_VCLKData *SiS_VCLKData; const struct SiS_ModeResInfo *SiS_ModeResInfo; }; #endif ' class='oid'>030305d69fc6963c16003f50d7e8d74b02d0a143 (patch) tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/bluetooth/hidp/core.c parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/bluetooth/hidp/core.c')