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Diffstat (limited to 'sound/usb/helper.h')
-rw-r--r--sound/usb/helper.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/usb/helper.h b/sound/usb/helper.h
index e2b51ec96ec6..0372e050b3dc 100644
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -17,6 +17,12 @@ unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
struct usb_host_interface *
snd_usb_get_host_interface(struct snd_usb_audio *chip, int ifnum, int altsetting);
+int snd_usb_add_ctrl_interface_link(struct snd_usb_audio *chip, int ifnum,
+ int ctrlif);
+
+struct usb_host_interface *snd_usb_find_ctrl_interface(struct snd_usb_audio *chip,
+ int ifnum);
+
/*
* retrieve usb_interface descriptor from the host interface
* (conditional for compatibility with the older API)
@@ -28,9 +34,9 @@ snd_usb_get_host_interface(struct snd_usb_audio *chip, int ifnum, int altsetting
#define snd_usb_get_speed(dev) ((dev)->speed)
-static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip)
+static inline int snd_usb_ctrl_intf(struct usb_host_interface *ctrl_intf)
{
- return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber;
+ return get_iface_desc(ctrl_intf)->bInterfaceNumber;
}
/* in validate.c */