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ACPICA: Do not abort table load on invalid space ID

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Ignore an invalid space ID during a table load. Instead, detect it
if a control method attempts access - then abort the method.

http://www.acpica.org/bugzilla/show_bug.cgi?id=925

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
2011-11-30 09:35:05 +08:00
committed by Len Brown
parent 46dfb09c02
commit ec4636669b
4 changed files with 54 additions and 12 deletions
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25
drivers/acpi/acpica/exutils.c
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@@ -435,4 +435,29 @@ void acpi_ex_integer_to_string(char *out_string, u64 value)
}
}
/*******************************************************************************
*
* FUNCTION: acpi_is_valid_space_id
*
* PARAMETERS: space_id - ID to be validated
*
* RETURN: TRUE if valid/supported ID.
*
* DESCRIPTION: Validate an operation region space_iD.
*
******************************************************************************/
u8 acpi_is_valid_space_id(u8 space_id)
{
if ((space_id >= ACPI_NUM_PREDEFINED_REGIONS) &&
(space_id < ACPI_USER_REGION_BEGIN) &&
(space_id != ACPI_ADR_SPACE_DATA_TABLE) &&
(space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
return (FALSE);
}
return (TRUE);
}
#endif