linux-kernel - Re: libata git tree, mbox queue status and contents

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Message-ID: <20070803172040.52853316@the-village.bc.nu>
Date:	Fri, 3 Aug 2007 17:20:40 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: libata git tree, mbox queue status and contents

> * Alan: IORDY handling -- upstream whenever Alan is happy

I'm happy with it from testing. Just a little worried about it going
upstream mid -rc as it could have a weird side effect somewhere. I've
verified an original pre ATA IDE drive with it too now 8)

> * Alan: ACPI checks for 80wire cable -- upstream whenever Alan is happy

Happy

> * Albert: irq_on/off.  Really need to give this some thought.  Not sure 
> I like where this model is going.  Polling and twiddling irq on/off 
> should be kept to a minimum, because it's sorta an admission that the 
> host state machine has broken down, and we need to bandaid.  Its a 
> bandaid not a root-cause solution.

I think of it more as an admission that the IDE design is lacking in a
few areas. No suprise as its an emulation of a 15 year old interface that
was normally used polled.

> * Ben Collins: cleanup HPA support.  Need to review and see what's 
> needed today, from this patch.

We need to track the HPA case Bartlomiej is working on with old IDE - one
drive out there is reporting its geometry wrong.
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