linux-kernel - Re: [PATCH] drivers/edac: NO_IRQ removal from powerpc-only drivers

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Date:   Mon, 12 Sep 2016 09:36:22 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Borislav Petkov <bp@...en8.de>, dougthompson@...ssion.com,
        mchehab@...nel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] drivers/edac: NO_IRQ removal from powerpc-only drivers

On Monday, September 12, 2016 2:47:37 PM CEST Michael Ellerman wrote:
> >> @@ -1058,7 +1058,7 @@ static int mpc85xx_mc_err_probe(struct platform_device *op)
> >>  
> >>      pdata = mci->pvt_info;
> >>      pdata->name = "mpc85xx_mc_err";
> >> -    pdata->irq = NO_IRQ;
> >> +    pdata->irq = 0;
> >>      mci->pdev = &op->dev;
> >>      pdata->edac_idx = edac_mc_idx++;
> >>      dev_set_drvdata(mci->pdev, mci);
> >
> > That part went into drivers/edac/fsl_ddr_edac.c which is only the
> > freescale memory controller being shared between ARM and PPC, see
> >
> > http://git.kernel.org/cgit/linux/kernel/git/bp/bp.git/log/?h=for-next
> >
> > But that shouldn't change the issue wrt ->irq as now it is implicitly 0.
> 
> Ah OK.
> 
> NO_IRQ is -1 on ARM (or at least it can be?), see arch/arm/include/asm/irq.h.
> 
> So I'll leave that one alone for now.

I don't think there is any way to build the mpc85xx on ARM, it depends
on the powerpc-specific "FSL_SOC" symbol and it uses the in_be32/out_be32
MMIO helpers that are not defined on ARM.

I've sent patches to remove all uses of NO_IRQ that happen on ARM.
Please remove this instance too.

	Arnd