[PATCH 3.6.0-rc5] dt: introduce of_get_child to get child node by name.

[Srinivas KANDAGATLA]

On 13/09/12 16:43, Rob Herring wrote:
> On 09/13/2012 10:25 AM, Srinivas KANDAGATLA wrote:
>> On 13/09/12 16:14, Stephen Warren wrote:
>>> On 09/13/2012 05:10 AM, Srinivas KANDAGATLA wrote:
>>>> From: Srinivas Kandagatla <srinivas.kandagatla at st.com>
>>>>
>>>> This patch introduces of_get_child function to get a child node by its
>>>> name in a given parent node.
>>>>
>>>> Without this patch each driver code has to iterate the parent and do
>>>> a string compare, However having of_get_child libary function would
>>>> avoid code duplication, errors and is more convenient.
>>>>
>>>> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at st.com>
>>> You forgot to Cc the drivers/of maintainers, Grant and Rob. I have here.
>> Oops...
>>
>>> I can certainly see a use for this in many places; the "runtime
>>> interpreted power sequences" patch, and the regulator DT parsing code at
>>> least both could benefit from this.
> I would think the power sequences code would always iterate over the nodes.
>
>> There are at-least 7-8 places in the current kernel which could use this
>> function directly.
> Care to point them out and preferably fix them then. That would be more
> convincing that this is needed.
I did plan on sending all the 7 patches with this one, But I wanted to
know overall opinion on introduction of this new function.

Here are the instances of the drivers... which can benefit from this
function..

drivers/tty/hvc/hvc_opal.c
drivers/spi/spi-s3c64xx.c
drivers/net/ethernet/freescale/fsl_pq_mdio.c
arch/powerpc/sysdev/qe_lib/qe.c
arch/powerpc/platforms/powernv/opal.c
arch/powerpc/kernel/prom.c



>
> Rob
>
>
>