At least when I build acpi as a module under 2.4.0-test13-pre5 (which requires tweaking the Makefiles and a config.in, but no modifications to .c or .h files), acpi gets into an infinite loop when it is loaded as a module on a Transmeta-based Sony PictureBook. The same kernel+module loads fine on a desktop machine that I tried, and doing the same on 2.4.0-test13-pre3 works fine on both computers. The problem is still in test13-pre7. From a day of reboots and printk's, I know that the infinite loop includes at the following call hierarchy: acpi_resolve_to_value acpi_resolve_node_to_value acpi_aml_access_named_field acpi_aml_read_field acpi_aml_read_field_data I also know that, elsewhere in the inifinite loop, acpi_release_parse_tree is called, as are acpi_cm_{acquire,release}_mutex. I know that the following calls are made shortly before the infinite loop starts: acpi_aml_exec_store acpi_aml_store_object_to_node acpi_aml_access_named_field acpi_aml_write_field acpi_aml_write_field_data I will explore this more tomorrow, but I have been exploring this problem on and off for three days, so I thought I ought to mention it on linux-kernel. Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104 [EMAIL PROTECTED] \ / San Jose, California 95129-1034 +1 408 261-6630 | g g d r a s i l United States of America fax +1 408 261-6631 "Free Software For The Rest Of Us." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/