/* * ALSA SoC driver for Migo-R * * Copyright (C) 2009-2010 Guennadi Liakhovetski * * 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. */ #include #include #include #include #include #include #include #include #include #include "../codecs/wm8978.h" #include "siu.h" /* Default 8000Hz sampling frequency */ static unsigned long codec_freq = 8000 * 512; static unsigned int use_count; /* External clock, sourced from the codec at the SIUMCKB pin */ static unsigned long siumckb_recalc(struct clk *clk) { return codec_freq; } static struct sh_clk_ops siumckb_clk_ops = { .recalc = siumckb_recalc, }; static struct clk siumckb_clk = { .ops = &siumckb_clk_ops, .rate = 0, /* initialised at run-time */ }; static struct clk_lookup *siumckb_lookup; static int migor_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; int ret; unsigned int rate = params_rate(params); ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000, SND_SOC_CLOCK_IN); if (ret < 0) return ret; ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512); if (ret < 0) return ret; codec_freq = rate * 512; /* * This propagates the parent frequency change to children and * recalculates the frequency table */ clk_set_rate(&siumckb_clk, codec_freq); dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq); ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, SIU_CLKB_EXT, codec_freq / 2, SND_SOC_CLOCK_IN); if (!ret) use_count++; return ret; } static int migor_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; if (use_count) { use_count--; if (!use_count) snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0, SND_SOC_CLOCK_IN); } else { dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n"); } return 0; } static struct snd_soc_ops migor_dai_ops = { .hw_params = migor_hw_params, .hw_free = migor_hw_free, }; static const struct snd_soc_dapm_widget migor_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_MIC("Onboard Microphone", NULL), SND_SOC_DAPM_MIC("External Microphone", NULL), }; static const struct snd_soc_dapm_route audio_map[] = { /* Headphone output connected to LHP/RHP, enable OUT4 for VMID */ { "Headphone", NULL, "OUT4 VMID" }, { "OUT4 VMID", NULL, "LHP" }, { "OUT4 VMID", NULL, "RHP" }, /* On-board microphone */ { "RMICN", NULL, "Mic Bias" }, { "RMICP", NULL, "Mic Bias" }, { "Mic Bias", NULL, "Onboard Microphone" }, /* External microphone */ { "LMICN", NULL, "Mic Bias" }, { "LMICP", NULL, "Mic Bias" }, { "Mic Bias", NULL, "External Microphone" }, }; /* migor digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link migor_dai = { .name = "wm8978", .stream_name = "WM8978", .cpu_dai_name = "siu-pcm-audio", .codec_dai_name = "wm8978-hifi", .platform_name = "siu-pcm-audio", .codec_name = "wm8978.0-001a", .dai_fmt = SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, .ops = &migor_dai_ops, }; /* migor audio machine driver */ static struct snd_soc_card snd_soc_migor = { .name = "Migo-R", .owner = THIS_MODULE, .dai_link = &migor_dai, .num_links = 1, .dapm_widgets = migor_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(migor_dapm_widgets), .dapm_routes = audio_map, .num_dapm_routes = ARRAY_SIZE(audio_map), }; static struct platform_device *migor_snd_device; static int __init migor_init(void) { int ret; ret = clk_register(&siumckb_clk); if (ret < 0) return ret; siumckb_lookup = clkdev_create(&siumckb_clk, "siumckb_clk", NULL); if (!siumckb_lookup) { ret = -ENOMEM; goto eclkdevalloc; } /* Port number used on this machine: port B */ migor_snd_device = platform_device_alloc("soc-audio", 1); if (!migor_snd_device) { ret = -ENOMEM; goto epdevalloc; } platform_set_drvdata(migor_snd_device, &snd_soc_migor); ret = platform_device_add(migor_snd_device); if (ret) goto epdevadd; return 0; epdevadd: platform_device_put(migor_snd_device); epdevalloc: clkdev_drop(siumckb_lookup); eclkdevalloc: clk_unregister(&siumckb_clk); return ret; } static void __exit migor_exit(void) { clkdev_drop(siumckb_lookup); clk_unregister(&siumckb_clk); platform_device_unregister(migor_snd_device); } module_init(migor_init); module_exit(migor_exit); MODULE_AUTHOR("Guennadi Liakhovetski "); MODULE_DESCRIPTION("ALSA SoC Migor"); MODULE_LICENSE("GPL v2"); '/cgit.cgi/linux/net-next.git/patch/net/tipc/Makefile?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>patch) treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /net/tipc/Makefile parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'net/tipc/Makefile')