Subject: Re: [PATCH v8 40/45] drivers/of: Split unflatten_dt_node()

From: Gavin Shan <[email-masked]>
Date: Mon, 2 May 2016 12:02:21 +1000

On Wed, Feb 17, 2016 at 08:30:42AM -0600, Rob Herring wrote:
>On Tue, Feb 16, 2016 at 9:44 PM, Gavin Shan <[email-masked]> wrote:
>> The function unflatten_dt_node() is called recursively to unflatten
>> device nodes and properties in the FDT blob. It looks complicated
>> and hard to be understood.
>>
>> This splits the function into 3 functions: populate_properties(),
>> populate_node() and unflatten_dt_node(). populate_properties(),
>> which is called by populate_node(), creates properties for the
>> indicated device node. The later one creates the device nodes
>> from FDT blob. populate_node() gets the offset in FDT blob for
>> next device nodes and then calls populate_node(). No logical
>> changes introduced.
>>
>> Signed-off-by: Gavin Shan <[email-masked]>
>> ---
>>  drivers/of/fdt.c | 249 ++++++++++++++++++++++++++++++++-----------------------
>>  1 file changed, 147 insertions(+), 102 deletions(-)
>
>One nit, otherwise:
>
>Acked-by: Rob Herring <[email-masked]>
>
>[...]
>
>> +               /* And we process the "ibm,phandle" property
>> +                * used in pSeries dynamic device tree
>> +                * stuff
>> +                */
>> +               if (!strcmp(pname, "ibm,phandle"))
>> +                       np->phandle = be32_to_cpup(val);
>> +
>> +               pp->name   = (char *)pname;
>> +               pp->length = sz;
>> +               pp->value  = (__be32 *)val;
>
>This cast should not be needed.
>

It's needed. Otherwise, we will have warning. So I will keep it. I just
went through this one for next revision and sorry for late response.

drivers/of/fdt.c:225:14: warning: assignment discards ‘const’ qualifier from pointer target type
   pp->value  = val;
              ^

Thanks,
Gavin

>> +               *pprev     = pp;
>> +               pprev      = &pp->next;
>> +       }