Thierry Reding <thierry.reding@xxxxxxxxx> wrote @ Fri, 25 Oct 2013 12:49:38 +0200: > The way notifiers work is that they run completely hidden from whatever > triggers them. For instance you register the IOMMU bus notifier from the > IOMMU driver (by calling bus_set_iommu()). That registers a function to > be called when some event happens on that bus. When a device's driver is > probed successfully, the driver core will notify the bus, which causes > the IOMMU callback to be run. > > Some of this code runs before the driver has successfully been probed, > so I imagine it would be possible to use it to abort probing. But that's > not possible at least with the current code. At least I'll experiment this way to see if it's acceptable or not. > > This looks somewhat similar to the above iommu_bus notifier. > > > > Is there any way to implement the same mechanism rather than using > > bus? > > Yes, I think it should be possible to get this to work without using the > bus notifier at all. I can try to code something up but wanted to wait > for feedback from Grant first. That's interesting too. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
