On Wed, 17 Oct 2012, Greg Kroah-Hartman wrote: > On Wed, Oct 17, 2012 at 10:27:36AM +0200, Guennadi Liakhovetski wrote: > > Hi > > > > I've got a situation, for which I currently don't have a (good) solution. > > > > 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()? > > No, no driver should ever have to mess with that at all, it is up to the > bus to do this. Do you have a pointer to the code you are concerned > about? No, not yet. I'm currently working on it. I'll do it using the device_release_driver(sd->dev); device_attach(sd->dev); trick and post to linux-media. I'll (try to remember to) add you to cc, then we can see how to properly implement it. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
