Date: Thu, 3 Feb 2005 10:35:05 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/sio sio.c Message-ID: <200502031035.j13AZ5jd022995@repoman.freebsd.org>
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rwatson 2005-02-03 10:35:05 UTC
FreeBSD src repository
Modified files:
sys/dev/sio sio.c
Log:
When entering siocnputc() with (kdb_active), don't acquire (or
release) the sio spin mutex, as use of synchronization primitives in
the debugger can result in substantial problems. With this patch in
place entering the debugger via a serial console is made
substantially more reliable.
MFC after: 1 week
Tested by: kris
Discussed with: bde
Revision Changes Path
1.457 +9 -5 src/sys/dev/sio/sio.c
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