linux-kernel - Re: sparc: patch to fix parport

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Date: Fri, 23 Feb 2024 10:34:16 +0100
From: Sam Ravnborg <sam@...nborg.org>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: sparclinux <sparclinux@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andreas Larsson <andreas@...sler.com>,
	"Maciej W. Rozycki" <macro@...am.me.uk>
Subject: Re: sparc: patch to fix parport_pc build on 32-bit

Hi Randy/Andreas.

On Thu, Feb 22, 2024 at 09:15:28PM -0800, Randy Dunlap wrote:
> Hi Andreas,
> 
> Please pick up this patch from June/2023. I have already replied to
> the patch with:
> 
> Acked-by: Randy Dunlap <rdunlap@...radead.org>
> Tested-by: Randy Dunlap <rdunlap@...radead.org> # build-tested
> 
> and I just rechecked it on linux-next-20240223 to make sure that it
> builds cleanly. It does; however, there is one trivial merge warning:
> 
> patching file arch/sparc/include/asm/parport.h
> Hunk #1 succeeded at 20 (offset 1 line).
> Hunk #2 succeeded at 252 (offset 1 line).
> 
> The patch:
> https://lore.kernel.org/lkml/alpine.DEB.2.21.2306190121540.14084@angie.orcam.me.uk/

I took a quick look at the patch. It does the minimal to fix the build
but the ebus_dma thing is only used by sparc64 an should not be visible
at all for sparc32.

I think the right fix is to make the current
arch/sparc/include/asm/parport.h sparc64 specific and use
asm-generic/parport.h for sparc32.

	Sam