public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

ALSA: usb-audio: Fix packet size calculation regression

Browse source 
The commit d215f63d49 ("ALSA: usb-audio: Check available frames for
the next packet size") introduced the available frame size check, but
the conversion forgot to initialize the temporary variable properly,
and it resulted in a bogus calculation.  This patch fixes it.

Fixes: d215f63d49 ("ALSA: usb-audio: Check available frames for the next packet size")
Reported-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20211001104417.14291-1-colin.king@canonical.com
Link: https://lore.kernel.org/r/20211001105425.16191-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-10-01 12:54:25 +02:00
parent 28c369e608
commit 23939115be
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
sound/usb/endpoint.c
View file

@ -182,7 +182,7 @@ static int next_packet_size(struct snd_usb_endpoint *ep, unsigned int avail)
if (ep->fill_max) if (ep->fill_max)
return ep->maxframesize; return ep->maxframesize;
sample_accum += ep->sample_rem; sample_accum = ep->sample_accum + ep->sample_rem;
if (sample_accum >= ep->pps) { if (sample_accum >= ep->pps) {
sample_accum -= ep->pps; sample_accum -= ep->pps;
ret = ep->packsize[1]; ret = ep->packsize[1];