# # CAIF net configurations # menuconfig CAIF tristate "CAIF support" select CRC_CCITT default n ---help--- The "Communication CPU to Application CPU Interface" (CAIF) is a packet based connection-oriented MUX protocol developed by ST-Ericsson for use with its modems. It is accessed from user space as sockets (PF_CAIF). Say Y (or M) here if you build for a phone product (e.g. Android or MeeGo ) that uses CAIF as transport, if unsure say N. If you select to build it as module then CAIF_NETDEV also needs to be built as modules. You will also need to say yes to any CAIF physical devices that your platform requires. See Documentation/networking/caif for a further explanation on how to use and configure CAIF. config CAIF_DEBUG bool "Enable Debug" depends on CAIF default n ---help--- Enable the inclusion of debug code in the CAIF stack. Be aware that doing this will impact performance. If unsure say N. config CAIF_NETDEV tristate "CAIF GPRS Network device" depends on CAIF default CAIF ---help--- Say Y if you will be using a CAIF based GPRS network device. This can be either built-in or a loadable module, If you select to build it as a built-in then the main CAIF device must also be a built-in. If unsure say Y. config CAIF_USB tristate "CAIF USB support" depends on CAIF default n ---help--- Say Y if you are using CAIF over USB CDC NCM. This can be either built-in or a loadable module, If you select to build it as a built-in then the main CAIF device must also be a built-in. If unsure say N. le class='tabs'> summaryrefslogtreecommitdiff
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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 /net/ieee802154/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/ieee802154/Kconfig')