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authorClemens Ladisch <clemens@ladisch.de>2013-04-27 14:10:32 +0400
committerTakashi Iwai <tiwai@suse.de>2013-04-29 12:57:35 +0400
commitc75c5ab575af7db707689cdbb5a5c458e9a034bb (patch)
tree66bf7a427bcb7a46de41f58efdaa3be853b42e6f /sound/usb/caiaq
parentfa92dd77ec5623cc0546acb77ee61a0a7ea4f0f0 (diff)
downloadlinux-c75c5ab575af7db707689cdbb5a5c458e9a034bb.tar.xz
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/caiaq')
-rw-r--r--sound/usb/caiaq/audio.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index 67330af21b0e..c1916184e2e1 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -683,7 +683,6 @@ static void read_completed(struct urb *urb)
if (send_it) {
out->number_of_packets = outframe;
- out->transfer_flags = URB_ISO_ASAP;
usb_submit_urb(out, GFP_ATOMIC);
} else {
struct snd_usb_caiaq_cb_info *oinfo = out->context;
@@ -699,7 +698,6 @@ requeue:
}
urb->number_of_packets = FRAMES_PER_URB;
- urb->transfer_flags = URB_ISO_ASAP;
usb_submit_urb(urb, GFP_ATOMIC);
}
@@ -765,7 +763,6 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret)
* BYTES_PER_FRAME;
urbs[i]->context = &cdev->data_cb_info[i];
urbs[i]->interval = 1;
- urbs[i]->transfer_flags = URB_ISO_ASAP;
urbs[i]->number_of_packets = FRAMES_PER_URB;
urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
read_completed : write_completed;