On Mon, Nov 19, 2018 at 10:58:12AM +0100, Rafael J. Wysocki wrote: > > +static unsigned long __init > > +acpi_get_entry_length(struct acpi_subtable_entry *entry) > > +{ > > + switch (entry->type) { > > + case ACPI_SUBTABLE_COMMON: > > + return entry->hdr->common.length; > > + } > > + WARN_ONCE(1, "invalid acpi type\n"); > > AFAICS this does a WARN_ONCE() on information obtained from firmware. > > That is not a kernel problem, so generating traces in that case is not > a good idea IMO. Moreover, users can't really do much about this in > the majority of cases, so a pr_info() message should be sufficient. Sure thing, I'll fix that up for the next revision.