On Wednesday 17 April 2013 at 14:05:58, Javier Martinez Canillas wrote:

...

> Yes, in fact I just realized that for_each_node_by_name() expand to:
> 
> #define for_each_node_by_name(dn, name) \
>         for (dn = of_find_node_by_name(NULL, name); dn; \
>              dn = of_find_node_by_name(dn, name))
> 
> which means that it will search for a node with "name" on the complete
> DeviceTree and this is wrong. It should only search on GPMC childs.
> 
> Could you please test the following patch? If it works for you I'll add
> a proper description and submit it as a PATCH.

I see discussion is already going on, I just want to report:
I tested the patch and it work as intended. Probing of the gpmc childs 
succeeds on am335x with another ethernet node in device tree.


Lars

> From d8dab9ae9a0284f17553875c2fddd806d9f6ab2e Mon Sep 17 00:00:00 2001
> From: Javier Martinez Canillas <javier.marti...@collabora.co.uk>
> Date: Wed, 17 Apr 2013 13:50:30 +0200
> Subject: [PATCH] ARM: OMAP2+: only search for GPMC DT child nodes on
>  probe
> 
> Signed-off-by: Javier Martinez Canillas
> <javier.marti...@collabora.co.uk> ---
>  arch/arm/mach-omap2/gpmc.c |   51
> ++++++++++++++++++++----------------------- 1 files changed, 24
> insertions(+), 27 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
> index ed946df..58e2415 100644
> --- a/arch/arm/mach-omap2/gpmc.c
> +++ b/arch/arm/mach-omap2/gpmc.c
> @@ -1520,35 +1520,32 @@ static int gpmc_probe_dt(struct platform_device
> *pdev) return ret;
>       }
> 
> -     for_each_node_by_name(child, "nand") {
> -             ret = gpmc_probe_nand_child(pdev, child);
> -             if (ret < 0) {
> -                     of_node_put(child);
> -                     return ret;
> -             }
> -     }
> -
> -     for_each_node_by_name(child, "onenand") {
> -             ret = gpmc_probe_onenand_child(pdev, child);
> -             if (ret < 0) {
> -                     of_node_put(child);
> -                     return ret;
> -             }
> -     }
> +     for_each_child_of_node(pdev->dev.of_node, child) {
> +             if (child->name) {
> +                     if (of_node_cmp(child->name, "nand") == 0) {
> +                             ret = gpmc_probe_nand_child(pdev, child);
> +                             if (ret < 0) {
> +                                     of_node_put(child);
> +                                     return ret;
> +                             }
> +                     }
> 
> -     for_each_node_by_name(child, "nor") {
> -             ret = gpmc_probe_generic_child(pdev, child);
> -             if (ret < 0) {
> -                     of_node_put(child);
> -                     return ret;
> -             }
> -     }
> +                     if (of_node_cmp(child->name, "onenand") == 0) {
> +                             ret = gpmc_probe_onenand_child(pdev, child);
> +                             if (ret < 0) {
> +                                     of_node_put(child);
> +                                     return ret;
> +                             }
> +                     }
> 
> -     for_each_node_by_name(child, "ethernet") {
> -             ret = gpmc_probe_generic_child(pdev, child);
> -             if (ret < 0) {
> -                     of_node_put(child);
> -                     return ret;
> +                     if (of_node_cmp(child->name, "ethernet") == 0 ||
> +                         of_node_cmp(child->name, "nor") == 0) {
> +                             ret = gpmc_probe_generic_child(pdev, child);
> +                             if (ret < 0) {
> +                                     of_node_put(child);
> +                                     return ret;
> +                             }
> +                     }
>               }
>       }

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