On 05/03/2013 03:40 AM, Tony Breeds wrote:
> On Thu, May 02, 2013 at 12:21:37PM -0300, Kleber Sacilotto de Souza wrote:
>
>> Hi Tony,
>>
>> It seems Lucas' change is a bit incomplete and is not handling the reference counter to
>> the device_node correctly. Is the following change what you had in mind?
>
> Ahh Sorry I expected there would be a for_each_parent_of_node macro.
> I did a quick grep and it seems that's not very common, so open coding
> it should be fine.
>
>>
>> dn = pcibios_get_phb_of_node(bus);
>> if (!dn)
>> return 0;
>>
>> for (pdn = dn; pdn != NULL; pdn = of_get_next_parent(pdn)) {
>> pcie_link_speed_stats = (const uint32_t *) of_get_property(pdn,
>> "ibm,pcie-link-speed-stats", NULL);
>> if (pcie_link_speed_stats)
>> break;
>> }
>>
>> of_node_put(pdn);
>
> I think you need the of_node_put() in the body of the loop, otherwise
> aren't you leaking refcounts?
of_get_next_parent() takes care of that. It does of_node_put() on the
current node after doing of_node_get() on the parent.
Thanks,
--
Kleber Sacilotto de Souza
IBM Linux Technology Center
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