CVS commit: src/sys/dev/ic

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Mon Dec 20 23:05:55 UTC 2021

Modified Files:
        src/sys/dev/ic: tpm.c tpmvar.h

Log Message:
tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source.  Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.


To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 src/sys/dev/ic/tpm.c
cvs rdiff -u -r1.9 -r1.10 src/sys/dev/ic/tpmvar.h

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