linux-kernel - Re: ata_sff_data

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Message-ID: <20091108200050.20d96a44@lxorguk.ukuu.org.uk>
Date:	Sun, 8 Nov 2009 20:00:50 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Krzysztof Halasa <khc@...waw.pl>
Cc:	linux-ide@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>
Subject: Re: ata_sff_data_xfer* return value

On Sun, 08 Nov 2009 20:27:02 +0100
Krzysztof Halasa <khc@...waw.pl> wrote:

> Hi,
> 
> I wonder if this is entirely correct? If so, why?

It is correct. We return the bytes consumed as it may well not be the
same as the total bytes requested. In practice we don't currently do a
great deal with it even with ATAPI but it's useful for doing bug checks.

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