On Thu, Apr 18, 2013 at 3:05 PM, Olof Johansson <o...@lixom.net> wrote: > On Thu, Apr 18, 2013 at 2:55 PM, Olof Johansson <o...@lixom.net> wrote: >> If chromeos_laptop is loaded before the DRM driver, the i2c busses will >> not yet be available. Defer probe for that case and try again later. >> >> Trickling the error up to the module init function is unfortuantely a >> little awkward, since the i2c bus lookup and device registration happens >> as a dmi callback. > > Uh, wait, hold off on this. I'm returning -EPROBE_DEFER from the > module init function. It's not valid outside of the driver model.
Ugh. Ok, so that worked just because any error seem to re-trigger an attempt to load the module later on my system (three times, it seems), and most of the reproductions I had happened to work out on the second load. Looks like keeping the module loaded and adding a bus notifier to wait for the right busses to show up is the only way to do this in a foolproof way. Revised patch tonight or tomorrow. -Olof -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
