linux-kernel - Re: [PATCH] of: return of_get_cpu_node from of_cpu_device_node

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Message-ID: <75ed0ec4-2276-c098-f7d4-7d9ce168f10c@arm.com>
Date:   Mon, 24 Jul 2017 17:32:21 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Sudeep Holla <sudeep.holla@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Frank Rowand <frowand.list@...il.com>
Subject: Re: [PATCH] of: return of_get_cpu_node from of_cpu_device_node_get if
 CPUs are not registered



On 24/07/17 17:00, Rob Herring wrote:
> On Mon, Jul 24, 2017 at 8:55 AM, Sudeep Holla <sudeep.holla@....com> wrote:
>> Instead of the callsites choosing between of_cpu_device_node_get if the
>> CPUs are registered as of_node is populated by then and of_get_cpu_node
>> when the CPUs are not yet registered as CPU of_nodes are not yet stashed
>> thereby needing to parse the device tree, we can call of_get_cpu_node
>> in case the CPUs are not yet registered.
>>
>> This will allow to use of_cpu_device_node_get anywhere hiding the
>> details from the caller.
>>
>> Cc: Rob Herring <robh+dt@...nel.org>
>> Cc: Frank Rowand <frowand.list@...il.com>
>> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
>> ---
>>  include/linux/of_device.h | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> Hi Rob,
>>
>> Let me know if you are OK with this change. I keep seeing different
>> drivers calling of_get_cpu_node or of_cpu_device_node_get based on what
>> they are aware of or copying from other place without knowing the
>> details. I am trying to avoid that and ask to use of_cpu_device_node_get
>> at all places instead.
> 
> Seems fine to me.
> 
> Acked-by: Rob Herring <robh@...nel.org>
> 

Thanks. Can you take it through your tree itself ? I can make any follow
patches(if any) once this lands in the tree. I don't have any for now
just to avoid all cross dependencies.

-- 
Regards,
Sudeep