linux/sound/core/misc.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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 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 you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

148 lines
3.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Misc and compatibility things
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/init.h>
#include <linux/export.h>
#include <linux/moduleparam.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#ifdef CONFIG_SND_DEBUG
#ifdef CONFIG_SND_DEBUG_VERBOSE
#define DEFAULT_DEBUG_LEVEL 2
#else
#define DEFAULT_DEBUG_LEVEL 1
#endif
static int debug = DEFAULT_DEBUG_LEVEL;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
#endif /* CONFIG_SND_DEBUG */
void release_and_free_resource(struct resource *res)
{
if (res) {
release_resource(res);
kfree(res);
}
}
EXPORT_SYMBOL(release_and_free_resource);
#ifdef CONFIG_SND_VERBOSE_PRINTK
/* strip the leading path if the given path is absolute */
static const char *sanity_file_name(const char *path)
{
if (*path == '/')
return strrchr(path, '/') + 1;
else
return path;
}
#endif
#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
void __snd_printk(unsigned int level, const char *path, int line,
const char *format, ...)
{
va_list args;
#ifdef CONFIG_SND_VERBOSE_PRINTK
int kern_level;
struct va_format vaf;
char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
bool level_found = false;
#endif
#ifdef CONFIG_SND_DEBUG
if (debug < level)
return;
#endif
va_start(args, format);
#ifdef CONFIG_SND_VERBOSE_PRINTK
vaf.fmt = format;
vaf.va = &args;
while ((kern_level = printk_get_level(vaf.fmt)) != 0) {
const char *end_of_header = printk_skip_level(vaf.fmt);
/* Ignore KERN_CONT. We print filename:line for each piece. */
if (kern_level >= '0' && kern_level <= '7') {
memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt);
level_found = true;
}
vaf.fmt = end_of_header;
}
if (!level_found && level)
memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
printk(verbose_fmt, sanity_file_name(path), line, &vaf);
#else
vprintk(format, args);
#endif
va_end(args);
}
EXPORT_SYMBOL_GPL(__snd_printk);
#endif
#ifdef CONFIG_PCI
#include <linux/pci.h>
/**
* snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
* @vendor: PCI SSV id
* @device: PCI SSD id
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
* with the same PCI SSID. When subdevice is 0, all subdevice
* values may match.
*
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
snd_pci_quirk_lookup_id(u16 vendor, u16 device,
const struct snd_pci_quirk *list)
{
const struct snd_pci_quirk *q;
for (q = list; q->subvendor; q++) {
if (q->subvendor != vendor)
continue;
if (!q->subdevice ||
(device & q->subdevice_mask) == q->subdevice)
return q;
}
return NULL;
}
EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
/**
* snd_pci_quirk_lookup - look up a PCI SSID quirk list
* @pci: pci_dev handle
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
* with the same PCI SSID. When subdevice is 0, all subdevice
* values may match.
*
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
{
if (!pci)
return NULL;
return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
pci->subsystem_device,
list);
}
EXPORT_SYMBOL(snd_pci_quirk_lookup);
#endif