linux-kernel - Re: [PATCH 5/7] scsi: mac_scsi: Fix pseudo DMA implementation, take 2

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Date:   Tue, 4 Jun 2019 10:05:44 +1000 (AEST)
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Michael Schmitz <schmitzmic@...il.com>
cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        scsi <linux-scsi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH 5/7] scsi: mac_scsi: Fix pseudo DMA implementation, take
 2

On Tue, 4 Jun 2019, Michael Schmitz wrote:

> Hi Finn,
> 
> On 3/06/19 7:40 PM, Finn Thain wrote:
> > 
> > > There are several other drivers that contain pieces of assembler code.
> > > 
> > Does any driver contain assembler code for multiple architectures? I was
> > trying to avoid that -- though admittedly I don't yet have actual code for
> > the PDMA implementation for mac_scsi for Nubus PowerMacs.
> > 
> I've seen that once, for one of the ESP drivers that were supported on both
> m68k and ppc (APUS, PPC upgrade to Amiga computers). But that driver was
> removed long ago (after 2.6?).
> 
> In that case, the assembly file did reside in drivers/scsi/. That still
> appears to be current practice (see drivers/scsi/arm/acornscsi-io.S).
> 

The presence of that file would be an argument for adding 
drivers/scsi/m68k/. This seems to be begging the question.

Since there's no clear policy, I'll combine the two files and avoid the 
question for now.

-- 

> Cheers,
> 
> ??? Michael
> 
> 
>