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authorTobias Klauser <tklauser@distanz.ch>2014-04-22 14:09:22 +0200
committerTobias Klauser <tklauser@distanz.ch>2014-04-22 14:09:22 +0200
commitbcd86fee383d25b14a2a85ec53b8a10e93d1e590 (patch)
tree847e5fb7ab87e82205d7e8576757eecdd2232c2b /epoll2.c
parent0f86cd6c1dcc2129285e6081751bae3a53058aeb (diff)
doc: AUTHORS: Add Oliver Smith to contributors
Oliver contributed a patch to astraceroute back in August 2013, but he was never properly credited in AUTHORS. Do that now. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'epoll2.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-02-16 23:56:20 +0000
c16003f50d7e8d74b02d0a143&id2=4d191b1b63c209e37bf27938ef365244d3c41084'>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 'sound/soc/codecs/wm8903.c')