linux-kernel - Re: [PATCH v4 34/78] atari_NCR5380: Use arbitration timeout

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Date:	Tue, 26 Jan 2016 12:13:20 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Finn Thain <fthain@...egraphics.com.au>
Cc:	"James E.J. Bottomley" <JBottomley@...n.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Michael Schmitz <schmitzmic@...il.com>,
	"Linux/m68k" <linux-m68k@...r.kernel.org>,
	scsi <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 34/78] atari_NCR5380: Use arbitration timeout

Hi Finn,

On Tue, Jan 26, 2016 at 1:18 AM, Finn Thain <fthain@...egraphics.com.au> wrote:
> On Mon, 25 Jan 2016, Geert Uytterhoeven wrote:
>> > In principle I think that Linux drivers should not carry workarounds
>> > for emulators.
>>
>> Please consider ARAnyM is the current m68k workhorse, so it would be
>> nice to handle this someway.
>
> AFAICT atari_scsi on aranym never did anything useful. Those aranym users
> who need to run Linux 4.5 can set CONFIG_ATARI_SCSI=n or blacklist the
> atari_scsi module (up until aranym can be patched).

FTR. adding "initcall_blacklist=atari_scsi_driver_init" to the kernel command
line makes it boot again.

>> Alternatively, we need to fix ARAnyM,
>
> I'll look into writing a patch for the emulator after I've finished
> testing the exception handling fixes for the driver.

Thank you!

>> or can make the creation of the atari_scsi platform device conditional
>> on not running under ARAnyM.
>
> Fixing the emulator is the only sensible approach. If S operating systems
> have to carry workarounds for B emulator bugs, the cost is (at least)
> proportional to S * B.

Sure.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds