/* * Copyright (C) 2005-2006 by Texas Instruments * * The Inventra Controller Driver for Linux is free software; you * can redistribute it and/or modify it under the terms of the GNU * General Public License version 2 as published by the Free Software * Foundation. */ #ifndef __MUSB_OMAP243X_H__ #define __MUSB_OMAP243X_H__ #include /* * OMAP2430-specific definitions */ #define OTG_REVISION 0x400 #define OTG_SYSCONFIG 0x404 # define MIDLEMODE 12 /* bit position */ # define FORCESTDBY (0 << MIDLEMODE) # define NOSTDBY (1 << MIDLEMODE) # define SMARTSTDBY (2 << MIDLEMODE) # define SIDLEMODE 3 /* bit position */ # define FORCEIDLE (0 << SIDLEMODE) # define NOIDLE (1 << SIDLEMODE) # define SMARTIDLE (2 << SIDLEMODE) # define ENABLEWAKEUP (1 << 2) # define SOFTRST (1 << 1) # define AUTOIDLE (1 << 0) #define OTG_SYSSTATUS 0x408 # define RESETDONE (1 << 0) #define OTG_INTERFSEL 0x40c # define EXTCP (1 << 2) # define PHYSEL 0 /* bit position */ # define UTMI_8BIT (0 << PHYSEL) # define ULPI_12PIN (1 << PHYSEL) # define ULPI_8PIN (2 << PHYSEL) #define OTG_SIMENABLE 0x410 # define TM1 (1 << 0) #define OTG_FORCESTDBY 0x414 # define ENABLEFORCE (1 << 0) #endif /* __MUSB_OMAP243X_H__ */ oop-back net-next plumbingsTobias Klauser
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/bluetooth/a2mp.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/a2mp.c')