diff options
Diffstat (limited to 'sound/usb/stream.c')
| -rw-r--r-- | sound/usb/stream.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index ad181d538bd9..7db2f8958e79 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -42,12 +42,11 @@ */ static void free_substream(struct snd_usb_substream *subs) { - struct list_head *p, *n; + struct audioformat *fp, *n; if (!subs->num_formats) return; /* not initialized */ - list_for_each_safe(p, n, &subs->fmt_list) { - struct audioformat *fp = list_entry(p, struct audioformat, list); + list_for_each_entry_safe(fp, n, &subs->fmt_list, list) { kfree(fp->rate_table); kfree(fp->chmap); kfree(fp); @@ -94,6 +93,7 @@ static void snd_usb_init_substream(struct snd_usb_stream *as, subs->dev = as->chip->dev; subs->txfr_quirk = as->chip->txfr_quirk; subs->speed = snd_usb_get_speed(subs->dev); + subs->pkt_offset_adj = 0; snd_usb_set_pcm_ops(as->pcm, stream); @@ -313,14 +313,12 @@ int snd_usb_add_audio_stream(struct snd_usb_audio *chip, int stream, struct audioformat *fp) { - struct list_head *p; struct snd_usb_stream *as; struct snd_usb_substream *subs; struct snd_pcm *pcm; int err; - list_for_each(p, &chip->pcm_list) { - as = list_entry(p, struct snd_usb_stream, list); + list_for_each_entry(as, &chip->pcm_list, list) { if (as->fmt_type != fp->fmt_type) continue; subs = &as->substream[stream]; @@ -332,8 +330,7 @@ int snd_usb_add_audio_stream(struct snd_usb_audio *chip, } } /* look for an empty stream */ - list_for_each(p, &chip->pcm_list) { - as = list_entry(p, struct snd_usb_stream, list); + list_for_each_entry(as, &chip->pcm_list, list) { if (as->fmt_type != fp->fmt_type) continue; subs = &as->substream[stream]; @@ -396,6 +393,14 @@ static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip, if (!csep && altsd->bNumEndpoints >= 2) csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); + /* + * If we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra + * bytes after the first endpoint, go search the entire interface. + * Some devices have it directly *before* the standard endpoint. + */ + if (!csep) + csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); + if (!csep || csep->bLength < 7 || csep->bDescriptorSubtype != UAC_EP_GENERAL) { snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" @@ -463,7 +468,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) struct usb_host_interface *alts; struct usb_interface_descriptor *altsd; int i, altno, err, stream; - int format = 0, num_channels = 0; + unsigned int format = 0, num_channels = 0; struct audioformat *fp = NULL; int num, protocol, clock = 0; struct uac_format_type_i_continuous_descriptor *fmt; |