diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2009-02-06 08:13:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-12 09:50:24 -0800 |
| commit | 0e900a8736163bb7c078c815c2c96fac6106d2fd (patch) | |
| tree | 5793a7de2df673d2d45d8d60de6792279a7fab07 /sound | |
| parent | 5f1d5882000a8d13f244165ae8747029958ab3df (diff) | |
sound: usb-audio: handle wMaxPacketSize for FIXED_ENDPOINT devices
commit 894dcd78782842924527598b0b764c9b4e679e21 upstream.
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound')
| -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 bbd70d5814a..f44c15317fa 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); |