ALSA: usb-audio: simplify control interface access

As the control interface is now carried in struct snd_usb_audio, we can
simplify the API a little and also drop the private ctrlif field from
struct usb_mixer_interface.

Also remove a left-over function prototype in pcm.h.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 5 deletions

diff --git a/sound/usb/format.c b/sound/usb/format.c
index 30364aba79cc..4387f54d73db 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -264,13 +264,12 @@ static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
  * on the audioformat table (audio class v2).
  */
 static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
-                                       struct audioformat *fp,
-                                       struct usb_host_interface *iface)
+                                       struct audioformat *fp)
 {
         struct usb_device *dev = chip->dev;
         unsigned char tmp[2], *data;
         int nr_triplets, data_size, ret = 0;
-        int clock = snd_usb_clock_find_source(chip, chip->ctrl_intf, fp->clock);
+        int clock = snd_usb_clock_find_source(chip, fp->clock);
 
         if (clock < 0) {
                 snd_printk(KERN_ERR "%s(): unable to find clock source (clock %d)\n",
@@ -391,7 +390,7 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
                 break;
         case UAC_VERSION_2:
                 /* fp->channels is already set in this case */
-                ret = parse_audio_format_rates_v2(chip, fp, iface);
+                ret = parse_audio_format_rates_v2(chip, fp);
                 break;
         }
 
@@ -450,7 +449,7 @@ static int parse_audio_format_ii(struct snd_usb_audio *chip,
                 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
                 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
                 fp->frame_size = framesize;
-                ret = parse_audio_format_rates_v2(chip, fp, iface);
+                ret = parse_audio_format_rates_v2(chip, fp);
                 break;
         }
         }