On Wed, 17 Oct 2012, Guennadi Liakhovetski wrote:
> Hi
>
> I've got a situation, for which I currently don't have a (good) solution.
Ok, right, would it be acceptable to just do something like
if (dev->parent)
device_lock(dev->parent);
device_release_driver(dev);
device_attach(dev);
?
Thanks
Guennadi
> Let's say device A depends on device B and as long as B hasn't probed, A
> requests deferred probing. Now B probes, which causes A to also succeed
> its probing. Next we want to remove B, say, by unloading its driver. A has
> to go back into "deferred-probing" state. How do we do it? This can be
> achieved by unloading B's driver and loading again. Essentially, we have
> to use the sysfs "unbind" and then the "bind" attributes. But how do we do
> this from the kernel? Shall we export driver_bind() and driver_unbind()?
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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