diff options
| author | Clemens Ladisch | 2013-04-27 12:10:32 +0200 |
|---|---|---|
| committer | Takashi Iwai | 2013-04-29 10:57:35 +0200 |
| commit | c75c5ab575af7db707689cdbb5a5c458e9a034bb (patch) | |
| tree | 66bf7a427bcb7a46de41f58efdaa3be853b42e6f /sound/usb/misc | |
| parent | ALSA: usb - Avoid unnecessary sample rate changes on USB 2.0 clock sources (diff) | |
| download | kernel-qcow2-linux-c75c5ab575af7db707689cdbb5a5c458e9a034bb.tar.gz kernel-qcow2-linux-c75c5ab575af7db707689cdbb5a5c458e9a034bb.tar.xz kernel-qcow2-linux-c75c5ab575af7db707689cdbb5a5c458e9a034bb.zip | |
ALSA: USB: adjust for changed 3.8 USB API
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>
Cc: <stable@vger.kernel.org> # 3.8 only
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/misc')
| -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 8b81cb54026f..6ad617b94732 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; |