diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2009-02-06 08:13:07 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-02-06 09:47:12 +0100 |
| commit | 894dcd78782842924527598b0b764c9b4e679e21 (patch) | |
| tree | f0522de45c1d10a2e3da460b2359b9ef198a061f /sound/usb | |
| parent | Linux 2.6.29-rc3 (diff) | |
| download | linux-894dcd78782842924527598b0b764c9b4e679e21.tar.xz linux-894dcd78782842924527598b0b764c9b4e679e21.zip | |
sound: usb-audio: handle wMaxPacketSize for FIXED_ENDPOINT devices
For audio devices that do not have proper audio descriptors (e.g.,
Edirol UA-20), we use hardcoded parameters from our quirks list.
However, we must still read the maximum packet size from the standard
endpoint descriptor; otherwise, we might use packets that are too big
and therefore rejected by the USB core.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/usbaudio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index c709b9563226..2ab83129d9b0 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -2966,6 +2966,7 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip, return -EINVAL; } alts = &iface->altsetting[fp->altset_idx]; + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); usb_set_interface(chip->dev, fp->iface, 0); init_usb_pitch(chip->dev, fp->iface, alts, fp); init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); |