/* * Header providing constants for bcm2835 pinctrl bindings. * * Copyright (C) 2015 Stefan Wahren * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #ifndef __DT_BINDINGS_PINCTRL_BCM2835_H__ #define __DT_BINDINGS_PINCTRL_BCM2835_H__ /* brcm,function property */ #define BCM2835_FSEL_GPIO_IN 0 #define BCM2835_FSEL_GPIO_OUT 1 #define BCM2835_FSEL_ALT5 2 #define BCM2835_FSEL_ALT4 3 #define BCM2835_FSEL_ALT0 4 #define BCM2835_FSEL_ALT1 5 #define BCM2835_FSEL_ALT2 6 #define BCM2835_FSEL_ALT3 7 /* brcm,pull property */ #define BCM2835_PUD_OFF 0 #define BCM2835_PUD_DOWN 1 #define BCM2835_PUD_UP 2 #endif /* __DT_BINDINGS_PINCTRL_BCM2835_H__ */ ethod='get'> net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/include/net/netns/core.h
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 /include/net/netns/core.h
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 'include/net/netns/core.h')