[PATCH 1/2] IPMI and acpi=off|ht : acpi-get-firmware-failure.patch

[Yann Droneaud <ydroneaud@mandriva.com>]

This patch check that rsdt_info->pointer is not NULL before trying to
unmap ACPI tables, which can happen if acpi_tb_get_rsdt_address() failed.

In my case, with ipmi_si_intf module and acpi=ht|off parameter, the call
failed because acpi_gbl_table_flags is not initialised, so the
address.pointer_type is not setup correctly, leading to message like:

May 16 11:18:29 localhost kernel:     ACPI-0166: *** Error: Invalid address flags 8

and rsdt_info->pointer equal to NULL leading to the Oops.

--- linux-2.6.11.9/drivers/acpi/tables/tbxfroot.c	2005-05-11 18:42:39.000000000 -0400
+++ linux-2.6.11.9-fixes/drivers/acpi/tables/tbxfroot.c	2005-05-16 16:51:33.115768232 -0400
@@ -313,7 +313,9 @@ acpi_get_firmware_table (
 
 
 cleanup:
-	acpi_os_unmap_memory (rsdt_info->pointer, (acpi_size) rsdt_info->pointer->length);
+	if (rsdt_info->pointer) {
+		acpi_os_unmap_memory (rsdt_info->pointer, (acpi_size) rsdt_info->pointer->length);
+	}
 	ACPI_MEM_FREE (rsdt_info);
 
 	if (header) {


Signed-Off-by: ydroneaud@mandriva.com

-- 
Yann Droneaud <ydroneaud@mandriva.com>
Consulting Engineer
Professional Services
Mandriva http://mandriva.com/ (previously known as Mandrakesoft)