#include #include #include #include #include #include #include #include #include "str.h" #include "tstamping.h" int set_sockopt_hwtimestamp(int sock, const char *dev) { int timesource, ret; struct hwtstamp_config hwconfig; struct ifreq ifr; if (!strncmp("any", dev, strlen("any"))) return -1; memset(&hwconfig, 0, sizeof(hwconfig)); hwconfig.tx_type = HWTSTAMP_TX_OFF; hwconfig.rx_filter = HWTSTAMP_FILTER_ALL; memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name)); ifr.ifr_data = &hwconfig; ret = ioctl(sock, SIOCSHWTSTAMP, &ifr); if (ret < 0) return -1; timesource = SOF_TIMESTAMPING_RAW_HARDWARE; return setsockopt(sock, SOL_PACKET, PACKET_TIMESTAMP, ×ource, sizeof(timesource)); } '> 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 /sound/firewire/tascam
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 'sound/firewire/tascam')