Re: [PATCH v4 2/5] drivers/of: do not add memory for unavailable nodes

Hi Alistair,

On Fri, Oct 21, 2016 at 05:22:54PM +1100, Alistair Popple wrote:

From what I can tell it seems that kernels without this patch will try 
and use this memory even if it is marked in the device-tree as 
status="disabled" which could lead to problems for older kernels when 
we start exporting this property from firmware.

Arguably this might not be such a problem in practice as we probably 
don't have many (if any) existing kernels that will boot on hardware 
exporting these properties.

Yes, I think you've got it right.

However given this patch seems fairly independent perhaps it is worth 
sending as a separate fix if it is not going to make it into this 
release?

Michael,

If this set as a whole is going to miss the release, would it be helpful 
for me to resend 1/5 and 2/5 as a separate set? They are the minimum 
needed to prevent the possible forward compatibility issue Alistair 
describes.

-- 
Reza Arbab