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OpenCloudOS-Kernel
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Pull bugzilla-8346 into release branch

This commit is contained in:
Len Brown 2007-04-28 23:19:25 -04:00
parent 12a5a71212 79fff27002
commit aac60c1113
1 changed files with 12 additions and 0 deletions
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12
drivers/acpi/tables/tbfadt.c
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@ -347,6 +347,18 @@ static void acpi_tb_convert_fadt(void)
acpi_gbl_xpm1b_enable.space_id = acpi_gbl_FADT.xpm1a_event_block.space_id;
}
/*
* For ACPI 1.0 FADTs, ensure that reserved fields (which should be zero)
* are indeed zero. This will workaround BIOSs that inadvertently placed
* values in these fields.
*/
if (acpi_gbl_FADT.header.revision < 3) {
acpi_gbl_FADT.preferred_profile = 0;
acpi_gbl_FADT.pstate_control = 0;
acpi_gbl_FADT.cst_control = 0;
acpi_gbl_FADT.boot_flags = 0;
}
}
/******************************************************************************