CVS commit: src/sys/dev

["Nathanial Sloss" <nat%netbsd.org@localhost>]

Module Name:    src
Committed By:   nat
Date:           Sun Oct  1 21:49:20 UTC 2017

Modified Files:
        src/sys/dev: audio.c

Log Message:
Ensure proper use of sc_opens (play back) and sc_recopens (recording).
Fix logic for /dev/sound so audiosetinfo is only called once.

These changes are to ensure that init_output/input is only called once for
the respective function play back or recording.  For multiple recording or
plack back streams init_input/output is only called once fot the first
play/rec stream.

This addresses PR kern/52580, PR kern/52581 and PR kern/52582 analyzed and
reported by isaki@.


To generate a diff of this commit:
cvs rdiff -u -r1.409 -r1.410 src/sys/dev/audio.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.