/* * wm8727.c * * Created on: 15-Oct-2009 * Author: neil.jones@imgtec.com * * Copyright (C) 2009 Imagination Technologies Ltd. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include #include #include #include #include #include #include #include #include #include static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("VOUTL"), SND_SOC_DAPM_OUTPUT("VOUTR"), }; static const struct snd_soc_dapm_route wm8727_dapm_routes[] = { { "VOUTL", NULL, "Playback" }, { "VOUTR", NULL, "Playback" }, }; /* * Note this is a simple chip with no configuration interface, sample rate is * determined automatically by examining the Master clock and Bit clock ratios */ #define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\ SNDRV_PCM_RATE_192000) static struct snd_soc_dai_driver wm8727_dai = { .name = "wm8727-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = WM8727_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, }, }; static const struct snd_soc_codec_driver soc_codec_dev_wm8727 = { .component_driver = { .dapm_widgets = wm8727_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets), .dapm_routes = wm8727_dapm_routes, .num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes), }, }; static int wm8727_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wm8727, &wm8727_dai, 1); } static int wm8727_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver wm8727_codec_driver = { .driver = { .name = "wm8727", }, .probe = wm8727_probe, .remove = wm8727_remove, }; module_platform_driver(wm8727_codec_driver); MODULE_DESCRIPTION("ASoC wm8727 driver"); MODULE_AUTHOR("Neil Jones"); MODULE_LICENSE("GPL"); b02d0a143'/>
path: root/fs/xfs/xfs_trans.c
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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 /fs/xfs/xfs_trans.c
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 'fs/xfs/xfs_trans.c')