diff options
| -rw-r--r-- | sound/usb/stream.c | 52 |
1 files changed, 36 insertions, 16 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 956be9f7c72a..8ec0a5206ebe 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -626,6 +626,37 @@ snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface, return NULL; } +static struct audioformat * +audio_format_alloc_init(struct snd_usb_audio *chip, + struct usb_host_interface *alts, + int protocol, int iface_no, int altset_idx, + int altno, int num_channels, int clock) +{ + struct audioformat *fp; + + fp = kzalloc(sizeof(*fp), GFP_KERNEL); + if (!fp) + return NULL; + + fp->iface = iface_no; + fp->altsetting = altno; + fp->altset_idx = altset_idx; + fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; + fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; + fp->datainterval = snd_usb_parse_datainterval(chip, alts); + fp->protocol = protocol; + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); + fp->channels = num_channels; + if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH) + fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) + * (fp->maxpacksize & 0x7ff); + fp->clock = clock; + INIT_LIST_HEAD(&fp->list); + + return fp; +} + + int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) { struct usb_device *dev; @@ -928,25 +959,14 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) continue; } - fp = kzalloc(sizeof(*fp), GFP_KERNEL); + fp = audio_format_alloc_init(chip, alts, protocol, iface_no, i, + altno, num_channels, clock); if (!fp) return -ENOMEM; - fp->iface = iface_no; - fp->altsetting = altno; - fp->altset_idx = i; - fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; - fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; - fp->datainterval = snd_usb_parse_datainterval(chip, alts); - fp->protocol = protocol; - fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); - fp->channels = num_channels; - if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) - fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) - * (fp->maxpacksize & 0x7ff); - fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no); - fp->clock = clock; - INIT_LIST_HEAD(&fp->list); + fp->attributes = parse_uac_endpoint_attributes(chip, alts, + protocol, + iface_no); /* some quirks for attributes here */ snd_usb_audioformat_attributes_quirk(chip, fp, stream); |