[Bug 192755] snd_uaudio incorrect handling of version 1 audio format type descriptor

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192755

--- Comment #3 from commit-hook at freebsd.org ---
A commit references this bug:

Author: hselasky
Date: Mon Aug 18 14:30:44 UTC 2014
New revision: 270134
URL: http://svnweb.freebsd.org/changeset/base/270134

Log:
  Use the "bSubslotSize" and "bSubFrameSize" fields to obtain the actual
  sample size. According to the USB audio frame format specification
  from USB.org, the value in the "bBitResolution" field can be less than
  the actual sample size, depending on the actual hardware, and should
  not be used for this computation.

  PR:        192755
  MFC after:    1 week

Changes:
  head/sys/dev/sound/usb/uaudio.c

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