On Sat, 2013-07-06 at 17:45 +0900, Jonghwan Choi wrote:
> From: Benjamin Herrenschmidt <[email protected]>
> 
> This patch looks like it should be in the 3.9-stable tree, should we apply
> it?

My original email had a

CC: <[email protected]> [v3.6+]

Grant, any reason why you stripped it ?

Cheers,
Ben.

> ------------------
> 
> From: "Benjamin Herrenschmidt <[email protected]>"
> 
> commit 6dd18e4684f3d188277bbbc27545248487472108 upstream
> 
>  Commit:
> 
>   e38c0a1fbc5803cbacdaac0557c70ac8ca5152e7
>   of/address: Handle #address-cells > 2 specially
> 
> broke real time clock access on Bimini, js2x, and similar powerpc
> machines using the "maple" platform. That code was indirectly relying
> on the old (broken) behaviour of the translation for the hypertransport
> to ISA bridge.
> 
> This fixes it by treating hypertransport as a PCI bus
> 
> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
> Acked-by: Rob Herring <[email protected]>
> Signed-off-by: Grant Likely <[email protected]>
> Signed-off-by: Jonghwan Choi <[email protected]>
> ---
>  drivers/of/address.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/of/address.c b/drivers/of/address.c
> index 04da786..7c8221d 100644
> --- a/drivers/of/address.c
> +++ b/drivers/of/address.c
> @@ -106,8 +106,12 @@ static unsigned int of_bus_default_get_flags(const 
> __be32 *addr)
>  
>  static int of_bus_pci_match(struct device_node *np)
>  {
> -     /* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */
> -     return !strcmp(np->type, "pci") || !strcmp(np->type, "vci");
> +     /*
> +      * "vci" is for the /chaos bridge on 1st-gen PCI powermacs
> +      * "ht" is hypertransport
> +      */
> +     return !strcmp(np->type, "pci") || !strcmp(np->type, "vci") ||
> +             !strcmp(np->type, "ht");
>  }
>  
>  static void of_bus_pci_count_cells(struct device_node *np,


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