Date: Sat, 19 Dec 1998 08:28:59 -0800 (PST) From: Bruce Evans <bde@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: cvs commit: src/sys/i386/isa cy.c Message-ID: <199812191628.IAA13127@freefall.freebsd.org>
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bde 1998/12/19 08:28:58 PST
Modified files:
sys/i386/isa cy.c
Log:
Wait for channel commands to complete after issuing the commands.
The optimisation of only waiting before issuing new commands is
obviously invalid in general and it caused many errors in NIST-PCTS.
I think the errors were mostly for characters sent with the wrong
parity, etc., after a half complete tcsetattr().
Use microtime() instead of a magic loop count to limit the wait.
The wait is a busy-wait :-( and normally takes about 500 usec.
Revision Changes Path
1.81 +30 -16 src/sys/i386/isa/cy.c
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