Messages in this thread | | | Date | Wed, 17 Feb 2021 12:26:18 -0800 | From | Dmitry Torokhov <> | Subject | Re: [PATCH 3/3] Input: applespi: Add trace_event module param for early tracing. |
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Hi Ronald,
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
Thanks.
-- Dmitry
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