Re: [PATCH] of/device: Don't register disabled devices

On Thu, Jan 06, 2011 at 10:35:35AM +1100, David Gibson wrote:

On Wed, Jan 05, 2011 at 02:53:27PM -0800, Blanchard, Hollis wrote:

quoted

On 01/03/2011 03:01 PM, Grant Likely wrote:

quoted

Device nodes with the property status="disabled" are not usable and so
don't register them when parsing the device tree for devices.

This is great and all, but a fair amount of driver code explicitly 
searches the tree, rather than registering a probe function. That's why 
our earlier patches in this area were more comprehensive.

As your patch set shows, the total set isn't unmanageable, and the
preference for new code is to use the device model infrastructure if
at all possible.

quoted

What are your thoughts on handling those cases?

One by one.  Trying to handle the explicit searches automagically is
just asking for trouble.

Just as David says, the special cases are... well... special.
Anything making decisions about registering devices needs to follow
the status!="okay" rules.

g.