/* * include/linux/irqchip/irq-st.h * * Copyright (C) 2014 STMicroelectronics – All Rights Reserved * * Author: Lee Jones * * 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_INTERRUPT_CONTROLLER_ST_H #define _DT_BINDINGS_INTERRUPT_CONTROLLER_ST_H #define ST_IRQ_SYSCFG_EXT_0 0 #define ST_IRQ_SYSCFG_EXT_1 1 #define ST_IRQ_SYSCFG_EXT_2 2 #define ST_IRQ_SYSCFG_CTI_0 3 #define ST_IRQ_SYSCFG_CTI_1 4 #define ST_IRQ_SYSCFG_PMU_0 5 #define ST_IRQ_SYSCFG_PMU_1 6 #define ST_IRQ_SYSCFG_pl310_L2 7 #define ST_IRQ_SYSCFG_DISABLED 0xFFFFFFFF #define ST_IRQ_SYSCFG_EXT_1_INV 0x1 #define ST_IRQ_SYSCFG_EXT_2_INV 0x2 #define ST_IRQ_SYSCFG_EXT_3_INV 0x4 #endif e='hidden' name='id' value='63117f09c768be05a0bf465911297dc76394f686'/> 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 /tools/perf/scripts/perl/bin/rw-by-pid-report
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 'tools/perf/scripts/perl/bin/rw-by-pid-report')