linux-kernel - Re: linux-next: manual merge of the devicetree tree with the powerpc tree

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Date:	Tue, 13 Mar 2012 12:26:11 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Gavin Shan <shangw@...ux.vnet.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: linux-next: manual merge of the devicetree tree with the powerpc tree

On Tue, 13 Mar 2012 16:01:00 +1100, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> Hi Grant,
> 
> Today's linux-next merge of the devicetree tree got a conflict in
> include/linux/of.h between commit eb740b5f3e65 ("powerpc/eeh: Introduce
> EEH device") from the powerpc tree and commit 0f22dd395fc4 ("of: Only
> compile OF_DYNAMIC on PowerPC pseries and iseries") from the devicetree
> tree.
> 
> Just context changes.  I fixed it up (see below) and can carry the fix as
> necessary.
> -- 
> Cheers,
> Stephen Rothwell                    sfr@...b.auug.org.au
> 
> diff --cc include/linux/of.h
> index bdb1c07,533603e..0000000
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> @@@ -75,14 -72,10 +75,17 @@@ struct of_phandle_args 
>   	uint32_t args[MAX_PHANDLE_ARGS];
>   };
>   
>  +#if defined(CONFIG_EEH)
>  +static inline struct eeh_dev *of_node_to_eeh_dev(struct device_node *dn)
>  +{
>  +	return dn->edev;
>  +}
>  +#endif

Ben, What is this?  I don't want the eeh_dev pointer in struct device_node.  Up to
now we've avoided putting any reverse references into device_nodes.  For everything
else we use a reverse lookup, particularly for devices, to avoid growing the
device_node for each new type of lookup.

g.

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