/*
 *  Misc and compatibility things
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   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
 *
 */

#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
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