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Re: "Fix ATAPI transfer lengths" causes CD writing regression

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From: Alan Cox <alan@...>
To: Tejun Heo <htejun@...>
Cc: <albertl@...>, <albertcc@...>, Daniel Drake <dsd@...>, Jeff Garzik <jeff@...>, Jens Axboe <jens.axboe@...>, linux list <linux-kernel@...>, <linux-ide@...>
Subject: Re: "Fix ATAPI transfer lengths" causes CD writing regression
Date: Tuesday, November 6, 2007 - 8:48 am

> Just to make sure I'm not misunderstanding it.  So, PDC202xx will lock

The following hang mine:

	PIO transfer
	Reset state machine
	Read data register


	DMA transfer in progress
	Read data register

And this does not

	PIO transfer
	Keep reading data register while checking DRQ

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Messages in current thread:
"Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Tue Oct 30, 11:14 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Tue Oct 30, 12:02 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Tue Oct 30, 12:10 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Tue Oct 30, 11:34 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Tue Oct 30, 1:45 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Tue Oct 30, 3:01 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Tue Oct 30, 3:21 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Wed Oct 31, 7:49 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jens Axboe, (Wed Oct 31, 7:57 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Thu Nov 1, 5:48 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Thu Nov 1, 6:53 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Thu Nov 1, 7:09 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Thu Nov 1, 10:15 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Thu Nov 1, 11:33 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Fri Nov 2, 1:58 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Thu Nov 1, 12:04 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Fri Nov 2, 5:19 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Fri Nov 2, 9:17 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Sat Nov 3, 4:02 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Sat Nov 3, 8:07 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Sun Nov 4, 8:15 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Albert Lee, (Sun Nov 4, 12:02 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Sun Nov 4, 7:42 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Sun Nov 4, 8:05 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Mon Nov 5, 9:03 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Tue Nov 6, 6:18 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Tue Nov 6, 8:48 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Sat Nov 3, 8:34 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Thu Nov 1, 11:57 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Thu Nov 1, 12:06 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Wed Oct 31, 8:49 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Wed Oct 31, 8:20 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Wed Oct 31, 8:40 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Thu Nov 1, 6:50 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Tejun Heo, (Thu Nov 1, 3:24 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jens Axboe, (Wed Oct 31, 8:26 am)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jeff Garzik, (Wed Oct 31, 12:05 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Jens Axboe, (Wed Oct 31, 1:55 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Daniel Drake, (Wed Oct 31, 12:34 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Alan Cox, (Wed Oct 31, 12:29 pm)
Re: "Fix ATAPI transfer lengths" causes CD writing regression, Frans Pop, (Tue Oct 30, 2:26 pm)