Hi Dmitry, On Wed, Feb 17, 2021 at 12:26:18PM -0800, Dmitry Torokhov wrote: > > On Wed, Feb 17, 2021 at 11:07:18AM -0800, Ronald Tschalär wrote: > > The problem is that tracing can't be set via sysfs until the module is > > loaded, at which point the keyboard and trackpad initialization commands > > have already been run and hence tracing can't be used to debug problems > > here. > > > > Adding this param allows tracing to be enabled for messages sent and > > received during module probing. It takes comma-separated list of events, > > e.g. > > > > trace_event=applespi_tp_ini_cmd,applespi_bad_crc > > You can unbind and rebind a device to a driver via sysfs as many times > as needed (see bind and unbind driver sysfs attributes), so I believe Hmm, I'm going to have to play with that a bit, but one place it still won't help I think is something we ran into in practise: init was failing during boot, but was successfull later on. Cheers, Ronald
