linux-kernel - Re: libata passthru: support PIO multi commands

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Message-ID: <46703D8A.4040403@garzik.org>
Date:	Wed, 13 Jun 2007 14:55:06 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
CC:	albertl@...l.com, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: libata passthru: support PIO multi commands

Sergei Shtylyov wrote:
>    This is generally a bad practice to guess protocol based on opcode. 
> What if the code will have to handle a vendor unique command (or some 
> other command not yet known to it but known to issuer)?

Agreed -- we simply cannot rely on guessing protocol from opcode, we 
MUST take the protocol that is specified.

	Jeff


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