From mboxrd@z Thu Jan  1 00:00:00 1970
From: Robert Hancock <hancockr@shaw.ca>
Subject: Re: serial flow control appears broken
Date: Thu, 02 Aug 2007 11:02:10 -0600
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Mark Lord <lkml@rtr.ca>, "Maciej W. Rozycki" <macro@linux-mips.org>, Russell King <rmk+lkml@arm.linux.org.uk>, Lee Howard <faxguy@howardsilvan.com>, linux-serial@vger.kernel.org, tytso@mit.edu, linux-kernel@vger.kernel.org

Alan Cox wrote:
>> I think that PIO transfers only have to be done with interrupts disabled 
>> on really old, evil controllers (without unmask set). I don't think 
>> libata ever disables interrupts during transfers(?)
> 
> Currently libata PIO is mostly done in the IRQ path. Albert Lee was doing
> some work on that but its actually very hard to fix without doing polled
> PIO.

Ah, right. Misread the code.