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authorLin Ming <ming.m.lin@intel.com>2010-04-08 14:34:27 +0800
committerLen Brown <len.brown@intel.com>2010-04-20 10:43:16 -0400
commitaa2110cb1a7510f9b834adfb39b05d4843a35d35 (patch)
tree0dda563bb8a8251fb6f6b878f16598a3901f992f /drivers/acpi/acpica
parent43323cb4c4b619414913f54fef9d492aabadd033 (diff)
ACPI: add boot option acpi=copy_dsdt to fix corrupt DSDT
Some BIOS on Toshiba machines corrupt the DSDT, so add a new boot option acpi=copy_dsdt to workaround it. Add warning message to ask users to use this option if corrupt DSDT detected. Also build a DMI blacklist to check it and automatically copy DSDT. https://bugzilla.kernel.org/show_bug.cgi?id=14679 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
-rw-r--r--drivers/acpi/acpica/tbutils.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 54a8712bae62..a9b105fc2e55 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -373,6 +373,10 @@ void acpi_tb_check_dsdt_header(void)
acpi_tb_print_table_header(0, &acpi_gbl_original_dsdt_header);
acpi_tb_print_table_header(0, acpi_gbl_DSDT);
+ ACPI_ERROR((AE_INFO,
+ "Please send DMI info to linux-acpi@vger.kernel.org\n"
+ "If system does not work as expected, please boot with acpi=copy_dsdt"));
+
/* Disable further error messages */
acpi_gbl_original_dsdt_header.length = acpi_gbl_DSDT->length;