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Date:      Sun, 23 Dec 2001 13:31:56 +1030
From:      Greg Lehey <grog@FreeBSD.org>
To:        Bruce Evans <bde@zeta.org.au>, Matthew Dillon <dillon@apollo.backplane.com>, Bruce Evans <bde@FreeBSD.org>, Matt Dillon <dillon@FreeBSD.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, FreeBSD Core Team <core@FreeBSD.org>
Subject:   Re: cvs commit: src/sys/dev/sio sio.c
Message-ID:  <20011223133156.I88202@monorchid.lemis.com>
In-Reply-To: <200112230248.fBN2mPE46699@freefall.freebsd.org> <200112230238.fBN2c4P45953@freefall.freebsd.org> <200112230242.fBN2gqh99138@apollo.backplane.com> <20011223132947.K10139-100000@gamplex.bde.org>
References:  <200112230248.fBN2mPE46699@freefall.freebsd.org> <200112230238.fBN2c4P45953@freefall.freebsd.org> <20011223132947.K10139-100000@gamplex.bde.org> <200112230242.fBN2gqh99138@apollo.backplane.com> <200112230048.fBN0mb624793@freefall.freebsd.org> <20011223132947.K10139-100000@gamplex.bde.org>

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(dons -core hat)

Come on, people, this isn't appropriate behaviour.  I'd have expected
a more mature approach from both of you.  Please don't touch these
sources until we've had time to talk about it (which probably means at
least 24 hours).

Greg

On Sunday, 23 December 2001 at 13:33:53 +1100, Bruce Evans wrote:
> On Sat, 22 Dec 2001, Matt Dillon wrote:
>
>> dillon      2001/12/22 16:48:37 PST
>>
>>   Modified files:
>>     sys/dev/sio          sio.c
>>   Log:
>>   This problem has been in the serial driver for years, and I occassionally
>>   see people trip over it.  Do not set the FIFO trigger to just before it
>>   would otherwise overflow.  Give it a little more slop so characters aren't
>>   lost if the interrupt is delayed by other system activities.
>>
>>   MFC maybe: 7 days
>>
>>   Revision  Changes    Path
>>   1.354     +6 -1      src/sys/dev/sio/sio.c
>
> This setting is intentional.  The default setting provides twice as much
> slop as the 8250 UARTs which the driver was designed to support on systems
> hundreds of times slower than current ones.  Making it twice as large
> again doesn't help much.
>
> This commit will was not approved or even sent for review to the maintainer
> and will be backed out in a minute.
>
> Bruce

On Saturday, 22 December 2001 at 18:42:52 -0800, Matthew Dillon wrote:
>>
>> This setting is intentional.  The default setting provides twice as much
>> slop as the 8250 UARTs which the driver was designed to support on systems
>> hundreds of times slower than current ones.  Making it twice as large
>> again doesn't help much.
>>
>> This commit will was not approved or even sent for review to the maintainer
>> and will be backed out in a minute.
>>
>> Bruce
>
>     If you back it out I will put it right back in.  You will need a core
>     action to take it out.  Three people (inclusive of me) have had this
>     problem.  People have had this problem before.  People have had this
>     problem for YEARS.  This fixed it for one, a second just emailed me
>     and said he had to do exactly the same thing, and I've had this problem
>     before to and this fixed it for me.
>
>     If you want to go back to HI, you can damn well FIX all the problems
>     people are having with it in the first place.  Otherwise it stays
>     at MEDHI.
>
> 					-Matt
> 					Matthew Dillon
> 					<dillon@backplane.com>

On Saturday, 22 December 2001 at 18:38:04 -0800, Bruce Evans wrote:
> bde         2001/12/22 18:38:04 PST
>
>   Modified files:
>     sys/dev/sio          sio.c
>   Log:
>   Backed out previous unapproved commit.
>
>   Revision  Changes    Path
>   1.355     +1 -6      src/sys/dev/sio/sio.c

On Saturday, 22 December 2001 at 18:48:25 -0800, Matt Dillon wrote:
> dillon      2001/12/22 18:48:25 PST
>
>   Modified files:
>     sys/dev/sio          sio.c
>   Log:
>   Back out an inappropriate backout.  If Anyone wants to set the FIFO
>   level that high they should first fix the problems with the system that
>   cause silo overflows.  It is far more important for the serial device
>   to work.
>
>   Revision  Changes    Path
>   1.356     +6 -1      src/sys/dev/sio/sio.c


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