/* * Linux driver for TerraTec DMX 6Fire USB * * Main routines and module definitions. * * Author: Torsten Schenk * Created: Jan 01, 2011 * Copyright: (C) Torsten Schenk * * 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 "chip.h" #include "firmware.h" #include "pcm.h" #include "control.h" #include "comm.h" #include "midi.h" #include #include #include #include #include #include MODULE_AUTHOR("Torsten Schenk "); MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver"); MODULE_LICENSE("GPL v2"); MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}"); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */ static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */ static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for the 6fire sound device"); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for the 6fire sound device."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable the 6fire sound device."); static DEFINE_MUTEX(register_mutex); static void usb6fire_chip_abort(struct sfire_chip *chip) { if (chip) { if (chip->pcm) usb6fire_pcm_abort(chip); if (chip->midi) usb6fire_midi_abort(chip); if (chip->comm) usb6fire_comm_abort(chip); if (chip->control) usb6fire_control_abort(chip); if (chip->card) { snd_card_disconnect(chip->card); snd_card_free_when_closed(chip->card); chip->card = NULL; } } } static void usb6fire_chip_destroy(struct sfire_chip *chip) { if (chip) { if (chip->pcm) usb6fire_pcm_destroy(chip); if (chip->midi) usb6fire_midi_destroy(chip); if (chip->comm) usb6fire_comm_destroy(chip); if (chip->control) usb6fire_control_destroy(chip); if (chip->card) snd_card_free(chip->card); } } static int usb6fire_chip_probe(struct usb_interface *intf, const struct usb_device_id *usb_id) { int ret; int i; struct sfire_chip *chip = NULL; struct usb_device *device = interface_to_usbdev(intf); int regidx = -1; /* index in module parameter array */ struct snd_card *card = NULL; /* look if we already serve this card and return if so */ mutex_lock(®ister_mutex); for (i = 0; i < SNDRV_CARDS; i++) { if (devices[i] == device) { if (chips[i]) chips[i]->intf_count++; usb_set_intfdata(intf, chips[i]); mutex_unlock(®ister_mutex); return 0; } else if (!devices[i] && regidx < 0) regidx = i; } if (regidx < 0) { mutex_unlock(®ister_mutex); dev_err(&intf->dev, "too many cards registered.\n"); return -ENODEV; } devices[regidx] = device; mutex_unlock(®ister_mutex); /* check, if firmware is present on device, upload it if not */ ret = usb6fire_fw_init(intf); if (ret < 0) return ret; else if (ret == FW_NOT_READY) /* firmware update performed */ return 0; /* if we are here, card can be registered in alsa. */ if (usb_set_interface(device, 0, 0) != 0) { dev_err(&intf->dev, "can't set first interface.\n"); return -EIO; } ret = snd_card_new(&intf->dev, index[regidx], id[regidx], THIS_MODULE, sizeof(struct sfire_chip), &card); if (ret < 0) { dev_err(&intf->dev, "cannot create alsa card.\n"); return ret; } strcpy(card->driver, "6FireUSB"); strcpy(card->shortname, "TerraTec DMX6FireUSB"); sprintf(card->longname, "%s at %d:%d", card->shortname, device->bus->busnum, device->devnum); chip = card->private_data; chips[regidx] = chip; chip->dev = device; chip->regidx = regidx; chip->intf_count = 1; chip->card = card; ret = usb6fire_comm_init(chip); if (ret < 0) { usb6fire_chip_destroy(chip); return ret; } ret = usb6fire_midi_init(chip); if (ret < 0) { usb6fire_chip_destroy(chip); return ret; } ret = usb6fire_pcm_init(chip); if (ret < 0) { usb6fire_chip_destroy(chip); return ret; } ret = usb6fire_control_init(chip); if (ret < 0) { usb6fire_chip_destroy(chip); return ret; } ret = snd_card_register(card); if (ret < 0) { dev_err(&intf->dev, "cannot register card."); usb6fire_chip_destroy(chip); return ret; } usb_set_intfdata(intf, chip); return 0; } static void usb6fire_chip_disconnect(struct usb_interface *intf) { struct sfire_chip *chip; struct snd_card *card; chip = usb_get_intfdata(intf); if (chip) { /* if !chip, fw upload has been performed */ card = chip->card; chip->intf_count--; if (!chip->intf_count) { mutex_lock(®ister_mutex); devices[chip->regidx] = NULL; chips[chip->regidx] = NULL; mutex_unlock(®ister_mutex); chip->shutdown = true; usb6fire_chip_abort(chip); usb6fire_chip_destroy(chip); } } } static struct usb_device_id device_table[] = { { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x0ccd, .idProduct = 0x0080 }, {} }; MODULE_DEVICE_TABLE(usb, device_table); static struct usb_driver usb_driver = { .name = "snd-usb-6fire", .probe = usb6fire_chip_probe, .disconnect = usb6fire_chip_disconnect, .id_table = device_table, }; module_usb_driver(usb_driver); ='oid'>0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'security/tomoyo/load_policy.c')