ALSA: usb-audio: fix regression for fixed stream quirk
Commit 8f898e92ae
removed the redundant
reads of bInterfaceProtocol from the descriptors, but introduced a
regression to devices with quirks of type QUIRK_AUDIO_FIXED_ENDPOINT,
since fp->protocol is not set in setup process.
As a consequence, audio streams would not get initialized, as the
following logs show:
[ 48.923043] setting usb interface 3:1
[ 48.923056] Creating new capture data endpoint #81
[ 48.923484] 4:3:1: cannot set freq 48000 to ep 0x81
This patch sets fp->protocol in create_fixed_stream_quirk() and
resolves the regression.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
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1 changed files with 4 additions and 0 deletions
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@ -129,6 +129,7 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
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{
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struct audioformat *fp;
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struct usb_host_interface *alts;
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struct usb_interface_descriptor *altsd;
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int stream, err;
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unsigned *rate_table = NULL;
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@ -166,6 +167,9 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
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return -EINVAL;
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}
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alts = &iface->altsetting[fp->altset_idx];
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altsd = get_iface_desc(alts);
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fp->protocol = altsd->bInterfaceProtocol;
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if (fp->datainterval == 0)
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fp->datainterval = snd_usb_parse_datainterval(chip, alts);
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if (fp->maxpacksize == 0)
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