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Date:   Wed, 2 Dec 2020 12:25:15 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>
Cc:     Wang ShaoBo <bobo.shaobowang@huawei.com>, mchehab@kernel.org,
        james.morse@arm.com, linux-edac@vger.kernel.org,
        linux-kernel@vger.kernel.org, huawei.libin@huawei.com,
        cj.chengjian@huawei.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] EDAC, mv64x60: Fix error return code in
 mv64x60_pci_err_probe()
Message-ID: <20201202112515.GC2951@zn.tnic>
References: <20201124063009.1529-1-bobo.shaobowang@huawei.com>
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In-Reply-To: <20201124063009.1529-1-bobo.shaobowang@huawei.com>
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On Tue, Nov 24, 2020 at 02:30:09PM +0800, Wang ShaoBo wrote:
> Fix to return -ENODEV error code when edac_pci_add_device() failed instaed
> of 0 in mv64x60_pci_err_probe(), as done elsewhere in this function.
> 
> Fixes: 4f4aeeabc061 ("drivers-edac: add marvell mv64x60 driver")
> Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
> ---
>  drivers/edac/mv64x60_edac.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/edac/mv64x60_edac.c b/drivers/edac/mv64x60_edac.c
> index 3c68bb525d5d..456b9ca1fe8d 100644
> --- a/drivers/edac/mv64x60_edac.c
> +++ b/drivers/edac/mv64x60_edac.c
> @@ -168,6 +168,7 @@ static int mv64x60_pci_err_probe(struct platform_device *pdev)
>  
>  	if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
>  		edac_dbg(3, "failed edac_pci_add_device()\n");
> +		res = -ENODEV;
>  		goto err;
>  	}

That driver depends on MV64X60 and I don't see anything in the tree
enabling it and I can't select it AFAICT:

config MV64X60
        bool
        select PPC_INDIRECT_PCI
        select CHECK_CACHE_COHERENCY

PPC folks, what do we do here?

If not used anymore, I'd love to have one less EDAC driver.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette