Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Misc and compatibility things
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22#include <linux/init.h>
23#include <linux/time.h>
24#include <linux/ioport.h>
25#include <sound/core.h>
26
27#ifdef CONFIG_SND_DEBUG
28
29#ifdef CONFIG_SND_DEBUG_VERBOSE
30#define DEFAULT_DEBUG_LEVEL 2
31#else
32#define DEFAULT_DEBUG_LEVEL 1
33#endif
34
35static int debug = DEFAULT_DEBUG_LEVEL;
36module_param(debug, int, 0644);
37MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
38
39#endif /* CONFIG_SND_DEBUG */
40
41void release_and_free_resource(struct resource *res)
42{
43 if (res) {
44 release_resource(res);
45 kfree(res);
46 }
47}
48
49EXPORT_SYMBOL(release_and_free_resource);
50
51#ifdef CONFIG_SND_VERBOSE_PRINTK
52/* strip the leading path if the given path is absolute */
53static const char *sanity_file_name(const char *path)
54{
55 if (*path == '/')
56 return strrchr(path, '/') + 1;
57 else
58 return path;
59}
60
61/* print file and line with a certain printk prefix */
62static int print_snd_pfx(unsigned int level, const char *path, int line,
63 const char *format)
64{
65 const char *file = sanity_file_name(path);
66 char tmp[] = "<0>";
67 const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT;
68 int ret = 0;
69
70 if (format[0] == '<' && format[2] == '>') {
71 tmp[1] = format[1];
72 pfx = tmp;
73 ret = 1;
74 }
75 printk("%sALSA %s:%d: ", pfx, file, line);
76 return ret;
77}
78#else
79#define print_snd_pfx(level, path, line, format) 0
80#endif
81
82#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
83void __snd_printk(unsigned int level, const char *path, int line,
84 const char *format, ...)
85{
86 va_list args;
87
88#ifdef CONFIG_SND_DEBUG
89 if (debug < level)
90 return;
91#endif
92 va_start(args, format);
93 if (print_snd_pfx(level, path, line, format))
94 format += 3; /* skip the printk level-prefix */
95 vprintk(format, args);
96 va_end(args);
97}
98EXPORT_SYMBOL_GPL(__snd_printk);
99#endif
100
101#ifdef CONFIG_PCI
102#include <linux/pci.h>
103/**
104 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
105 * @pci: pci_dev handle
106 * @list: quirk list, terminated by a null entry
107 *
108 * Look through the given quirk list and finds a matching entry
109 * with the same PCI SSID. When subdevice is 0, all subdevice
110 * values may match.
111 *
112 * Returns the matched entry pointer, or NULL if nothing matched.
113 */
114const struct snd_pci_quirk *
115snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
116{
117 const struct snd_pci_quirk *q;
118
119 for (q = list; q->subvendor; q++) {
120 if (q->subvendor != pci->subsystem_vendor)
121 continue;
122 if (!q->subdevice ||
123 (pci->subsystem_device & q->subdevice_mask) == q->subdevice)
124 return q;
125 }
126 return NULL;
127}
128EXPORT_SYMBOL(snd_pci_quirk_lookup);
129#endif