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authorVivien Didelot <vivien.didelot@savoirfairelinux.com>2017-02-03 13:20:21 -0500
committerDavid S. Miller <davem@davemloft.net>2017-02-06 16:53:29 -0500
commit04d3a4c6af52a58370795bc9f70dc15f51f8bb84 (patch)
tree07ed46ceedeb980d62da34ae26e3aac5f8af7dfb /net/iucv/Makefile
parentf515f192ab4f45bb695146b82432d63d98775787 (diff)
net: dsa: introduce bridge notifier
A slave device will now notify the switch fabric once its port is bridged or unbridged, instead of calling directly its switch operations. This code allows propagating cross-chip bridging events in the fabric. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/iucv/Makefile')
0 files changed, 0 insertions, 0 deletions
r 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/ieee802154/6lowpan/tx.c')