CVS commit: src/sys/dev/wscons

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

Module Name:    src
Committed By:   jmcneill
Date:           Sun Jan 17 16:51:12 UTC 2021

Modified Files:
        src/sys/dev/wscons: wsdisplay_vcons.c

Log Message:
The change from config_interrupts to a kthread for VCONS_DRAW_INTR init
unfortunately makes it easier to trigger a race that results in characters
not being erased properly at boot. Work around the original issue a
different way by creating a fake device_t and defer initialization until
we are sure that config_interrupt threads are done. This is not ideal and
the race is still present but fixing this properly would require a rewrite
to make this code MP-safe.


To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.46 src/sys/dev/wscons/wsdisplay_vcons.c

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