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-rw-r--r--sound/core/misc.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/sound/core/misc.c b/sound/core/misc.c
index 03fc711f4127..6db86a7c9704 100644
--- a/sound/core/misc.c
+++ b/sound/core/misc.c
@@ -78,3 +78,31 @@ void snd_verbose_printd(const char *file, int line, const char *format, ...)
78 78
79EXPORT_SYMBOL(snd_verbose_printd); 79EXPORT_SYMBOL(snd_verbose_printd);
80#endif 80#endif
81
82#ifdef CONFIG_PCI
83#include <linux/pci.h>
84/**
85 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
86 * @pci: pci_dev handle
87 * @list: quirk list, terminated by a null entry
88 *
89 * Look through the given quirk list and finds a matching entry
90 * with the same PCI SSID. When subdevice is 0, all subdevice
91 * values may match.
92 *
93 * Returns the matched entry pointer, or NULL if nothing matched.
94 */
95const struct snd_pci_quirk *
96snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
97{
98 const struct snd_pci_quirk *q;
99
100 for (q = list; q->subvendor; q++)
101 if (q->subvendor == pci->subsystem_vendor &&
102 (!q->subdevice || q->subdevice == pci->subsystem_device))
103 return q;
104 return NULL;
105}
106
107EXPORT_SYMBOL(snd_pci_quirk_lookup);
108#endif