From d9ea472c743ccd7344055cb118bc210befbd8007 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 24 Nov 2006 15:34:06 +0100 Subject: [ALSA] Add PCI quirk list helper function Added a helper function snd_pci_quirk_lookup() to look up PCI SSID quirk list. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/core/misc.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'sound/core/misc.c') 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, ...) EXPORT_SYMBOL(snd_verbose_printd); #endif + +#ifdef CONFIG_PCI +#include +/** + * 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) +{ + const struct snd_pci_quirk *q; + + for (q = list; q->subvendor; q++) + if (q->subvendor == pci->subsystem_vendor && + (!q->subdevice || q->subdevice == pci->subsystem_device)) + return q; + return NULL; +} + +EXPORT_SYMBOL(snd_pci_quirk_lookup); +#endif -- cgit v1.2.1