linux-kernel - Re: [PATCH] scsi: aic7xxx: Remove dead code

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Date:   Mon, 26 Aug 2019 17:40:57 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     James Bottomley <jejb@...ux.ibm.com>
Cc:     hare@...e.com, "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi <linux-scsi@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: aic7xxx: Remove dead code

On Mon, Aug 26, 2019 at 2:03 PM James Bottomley <jejb@...ux.ibm.com> wrote:
>
> On Sat, 2019-08-24 at 20:38 +0530, Souptick Joarder wrote:
> > These are dead code since 2.6.13. If there is no plan
> > to use it further, these can be removed forever.
>
> Unless you can articulate a clear useful reason for the removal I'd
> rather keep this and the other code.  Most of the documentation for
> this chip is lost in the mists of time, so code fragments like this are
> the only way we know how it was supposed to work.

Considering your feedback, let's keep this code :)
>
> A clear reason might be that it's impossible for aic7xxx ever to make
> use of IU and QAS because they're LVD parameters and it's a SE/HVD
> card, so the documentation in the code is actively wrong, but you'd
> need to research that.

I need to look further to come up with a clear reason.