CVS commit: src/sys/dev/ic

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Mon Oct 11 18:39:06 UTC 2021

Modified Files:
        src/sys/dev/ic: com.c

Log Message:
com: speed up close with HUPCL set

Instead of incurring a 1s penalty on close of a com device with HUPCL set,
defer the sleep until the next open, and only sleep if necessary.

This has a side effect of making `ttyflags -a` with a default install not
pause for 1s for every non-console com device, which happens every boot
via /etc/rc.d/ttys.


To generate a diff of this commit:
cvs rdiff -u -r1.365 -r1.366 src/sys/dev/ic/com.c

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