diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2013-04-27 12:10:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 20:33:10 -0700 |
| commit | ff865cae825f9be5a0281f6af55dfb2f9a0fa5d3 (patch) | |
| tree | 0e7720576bc489eb167030d7a0724ba5bfa3bb77 /sound/usb/misc/ua101.c | |
| parent | 62d585f3410da7aa83b5cefdebb9eab3e64d739c (diff) | |
ALSA: USB: adjust for changed 3.8 USB API
commit c75c5ab575af7db707689cdbb5a5c458e9a034bb upstream.
The recent changes in the USB API ("implement new semantics for
URB_ISO_ASAP") made the former meaning of the URB_ISO_ASAP flag the
default, and changed this flag to mean that URBs can be delayed.
This is not the behaviour wanted by any of the audio drivers because
it leads to discontinuous playback with very small period sizes.
Therefore, our URBs need to be submitted without this flag.
Reported-by: Joe Rayhawk <jrayhawk@fairlystable.org>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/usb/misc/ua101.c')
| -rw-r--r-- | sound/usb/misc/ua101.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 8b81cb54026..6ad617b9473 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -1120,8 +1120,7 @@ static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream, usb_init_urb(&urb->urb); urb->urb.dev = ua->dev; urb->urb.pipe = stream->usb_pipe; - urb->urb.transfer_flags = URB_ISO_ASAP | - URB_NO_TRANSFER_DMA_MAP; + urb->urb.transfer_flags = URB_NO_TRANSFER_DMA_MAP; urb->urb.transfer_buffer = addr; urb->urb.transfer_dma = dma; urb->urb.transfer_buffer_length = max_packet_size; |