[PATCH v2 1/2] of: add optional options parameter to of_find_node_by_path()

[Grant Likely]

On Wed, Nov 26, 2014 at 5:40 PM, Leif Lindholm <leif.lindholm at linaro.org> wrote:
> Update of_find_node_by_path():
> 1) Ignore any part of the path beyond and including the ':' separator.
> 2) Set the new provided pointer argument to the beginning of the string
>    following the ':' separator.
>
> Coccinelle fixup using:
>
> @@
> expression E1;
> @@
>
> - of_find_node_by_path(E1)
> + of_find_node_by_path(E1, NULL)
>
> drivers/of/resolver.c manually updated, since spatch fails to parse
> it correctly.
>
> Signed-off-by: Leif Lindholm <leif.lindholm at linaro.org>

Okay, so you're probably going to kill me for the next comment...
After actually looking at this I can see that it's going to be a hard
patch to merge because of conflicts. It will need to be merged at the
end of a merge window to catch all the users, but that will mean that
the important part of the patch won't be able to be queued up in
linux-next.

So you were right the first time around. Create a new function name
that adds the extra argument and make of_find_node_by_path() a static
inline wrapper. That way I can queue it up into linux-next immediately
and the cleanup across the tree can be generated and submitted at the
very end of the merge window.

> @@ -380,7 +380,8 @@ static inline struct device_node *of_find_matching_node_and_match(
>         return NULL;
>  }
>
> -static inline struct device_node *of_find_node_by_path(const char *path)
> +static inline struct device_node *of_find_node_by_path(const char *path,
> +       char **opts)

const char **opts

>  {
>         return NULL;
>  }
> diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
> index e695517..0056963 100644
> --- a/sound/soc/fsl/fsl_ssi.c
> +++ b/sound/soc/fsl/fsl_ssi.c
> @@ -1427,7 +1427,7 @@ static int fsl_ssi_probe(struct platform_device *pdev)
>          * device tree.  We also pass the address of the CPU DAI driver
>          * structure.
>          */
> -       sprop = of_get_property(of_find_node_by_path("/"), "compatible", NULL);
> +       sprop = of_get_property(of_find_node_by_path("/", NULL), "compatible", NULL);
>         /* Sometimes the compatible name has a "fsl," prefix, so we strip it. */
>         p = strrchr(sprop, ',');
>         if (p)
> --
> 1.7.10.4
>