linux-kernel - Re: linux-next: manual merge of the generic-ioremap tree with the tegra tree

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Date:   Tue, 28 Jan 2020 10:01:47 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>
Cc:     Christoph Hellwig <hch@....de>, Colin Cross <ccross@...roid.com>,
        Thierry Reding <treding@...dia.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Dmitry Osipenko <digetx@...il.com>,
        ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: linux-next: manual merge of the generic-ioremap tree with the
 tegra tree

Hi all,

On Mon, 13 Jan 2020 16:27:48 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the generic-ioremap tree got a conflict in:
> 
>   drivers/soc/tegra/fuse/tegra-apbmisc.c
> 
> between commit:
> 
>   02676345e9b3 ("soc/tegra: fuse: Unmap registers once they are not needed anymore")
> 
> from the tegra tree and commit:
> 
>   4bdc0d676a64 ("remove ioremap_nocache and devm_ioremap_nocache")
> 
> from the generic-ioremap tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> -- 
> Cheers,
> Stephen Rothwell
> 
> diff --cc drivers/soc/tegra/fuse/tegra-apbmisc.c
> index 4a737f15e401,a2fd6ccd48f9..000000000000
> --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
> +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
> @@@ -157,21 -159,13 +157,21 @@@ void __init tegra_init_apbmisc(void
>   		}
>   	}
>   
> - 	apbmisc_base = ioremap_nocache(apbmisc.start, resource_size(&apbmisc));
> + 	apbmisc_base = ioremap(apbmisc.start, resource_size(&apbmisc));
>  -	if (!apbmisc_base)
>  +	if (!apbmisc_base) {
>   		pr_err("failed to map APBMISC registers\n");
>  +	} else {
>  +		chipid = readl_relaxed(apbmisc_base + 4);
>  +		iounmap(apbmisc_base);
>  +	}
>   
> - 	strapping_base = ioremap_nocache(straps.start, resource_size(&straps));
> + 	strapping_base = ioremap(straps.start, resource_size(&straps));
>  -	if (!strapping_base)
>  +	if (!strapping_base) {
>   		pr_err("failed to map strapping options registers\n");
>  +	} else {
>  +		strapping = readl_relaxed(strapping_base);
>  +		iounmap(strapping_base);
>  +	}
>   
>   	long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
>   }

This is now a conflict between the arm-soc tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

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