/* * Copyright (C) 2016 Cogent Embedded Inc. * * This program 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 __DT_BINDINGS_POWER_R8A7743_SYSC_H__ #define __DT_BINDINGS_POWER_R8A7743_SYSC_H__ /* * These power domain indices match the numbers of the interrupt bits * representing the power areas in the various Interrupt Registers * (e.g. SYSCISR, Interrupt Status Register) */ #define R8A7743_PD_CA15_CPU0 0 #define R8A7743_PD_CA15_CPU1 1 #define R8A7743_PD_CA15_SCU 12 #define R8A7743_PD_SGX 20 /* Always-on power area */ #define R8A7743_PD_ALWAYS_ON 32 #endif /* __DT_BINDINGS_POWER_R8A7743_SYSC_H__ */ ='/cgit.cgi/'>index : net-next.git
net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/net/packet/Kconfig
diff options
context:
space:
mode:
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/packet/Kconfig
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/packet/Kconfig')