Messages in this thread | | | Date | Sun, 18 Mar 2007 11:21:32 +0100 | From | Johannes Weiner <> | Subject | ACPI initialization failure with v2.6.21-rc4 |
| |
Hi,
The kernel version mentioned in the subject won't boot because the ACPI system does not get initialized; the system freezes on an outb() in acpi_os_write_port() i.e. it does not do anything anymore and just hangs.
Here is the `stack trace' I managed to extract via debugging output:
-- acpi_os_write_port(0xb2, 240, 8) -- acpi_hw_set_mode(ACPI_SYS_MODE_ACPI) -- acpi_enable() -- acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE) -- acpi_early_init() ...
Notes: * acpi_os_write_port(): I printk'd the arguments; the port formatted with %#x and the value with %u.
* acpi_enable_subsystem(): I removed ACPI_NO_HARDWARE_INIT from the arguments because it is not used anymore. In this context I want to mention that it probably can be removed from include/acpi/actypes.h generally.
Random question:
I noticed that acpi_gbl_FADT is declared in include/acpi/acglobal.h but where is it actually defined and initialized?
HTH, Hannes - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |