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| author | Andreas Pape <apape@de.adit-jv.com> | 2016-12-06 06:46:14 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-12-06 13:55:59 +0100 |
| commit | fd1a5059610cd3887f1050171a840ca864108730 (patch) | |
| tree | 749a58c5972b72aec1a78c765f2f9cf4b3e1a776 /sound/pci | |
| parent | ALSA: usb-audio: avoid setting of sample rate multiple times on bus (diff) | |
| download | linux-fd1a5059610cd3887f1050171a840ca864108730.tar.xz linux-fd1a5059610cd3887f1050171a840ca864108730.zip | |
ALSA: usb-audio: more tolerant packetsize
since commit 57e6dae1087b ("ALSA: usb-audio: do not trust too-big
wMaxPacketSize values"), the expected packetsize is always limited
to nominal + 25%. It was discovered, that some devices (Android audio
accessory) have a much higher jitter in used packetsizes than 25%
which would result in BABBLE condition and dropping of packets.
A better solution is so assume the jitter to be the nominal packetsize:
-one nearly empty packet followed by a almost 150% sized one.
V2: changed to assume max frequency is +50 of nominal packetsize.
Signed-off-by: Andreas Pape <apape@de.adit-jv.com>
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
0 files changed, 0 insertions, 0 deletions