/* * Driver for the PCM512x CODECs * * Author: Mark Brown * Copyright 2014 Linaro Ltd * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include #include #include #include "pcm512x.h" static int pcm512x_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct regmap *regmap; struct regmap_config config = pcm512x_regmap; /* msb needs to be set to enable auto-increment of addresses */ config.read_flag_mask = 0x80; config.write_flag_mask = 0x80; regmap = devm_regmap_init_i2c(i2c, &config); if (IS_ERR(regmap)) return PTR_ERR(regmap); return pcm512x_probe(&i2c->dev, regmap); } static int pcm512x_i2c_remove(struct i2c_client *i2c) { pcm512x_remove(&i2c->dev); return 0; } static const struct i2c_device_id pcm512x_i2c_id[] = { { "pcm5121", }, { "pcm5122", }, { "pcm5141", }, { "pcm5142", }, { } }; MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id); static const struct of_device_id pcm512x_of_match[] = { { .compatible = "ti,pcm5121", }, { .compatible = "ti,pcm5122", }, { .compatible = "ti,pcm5141", }, { .compatible = "ti,pcm5142", }, { } }; MODULE_DEVICE_TABLE(of, pcm512x_of_match); static struct i2c_driver pcm512x_i2c_driver = { .probe = pcm512x_i2c_probe, .remove = pcm512x_i2c_remove, .id_table = pcm512x_i2c_id, .driver = { .name = "pcm512x", .of_match_table = pcm512x_of_match, .pm = &pcm512x_pm_ops, }, }; module_i2c_driver(pcm512x_i2c_driver); MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL v2"); ctive' href='/cgit.cgi/linux/net-next.git/commit/include/net/mpls_iptunnel.h?h=nds-private-remove&id=030305d69fc6963c16003f50d7e8d74b02d0a143'>commitdiff
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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 /include/net/mpls_iptunnel.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/mpls_iptunnel.h')