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| author | Bob Moore <robert.moore@intel.com> | 2011-11-30 09:35:05 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-01-17 03:36:27 -0500 |
| commit | ec4636669bf9c6ff157121ab42709650a9e0cc2a (patch) | |
| tree | 41b10cf575dde3d9e83beae5b0511ac8d7531f31 /drivers/acpi/acpica/excreate.c | |
| parent | 46dfb09c024a1a92ead63b40f6993dcb5eb7d153 (diff) | |
| download | linux-ec4636669bf9c6ff157121ab42709650a9e0cc2a.tar.gz linux-ec4636669bf9c6ff157121ab42709650a9e0cc2a.tar.bz2 linux-ec4636669bf9c6ff157121ab42709650a9e0cc2a.zip | |
ACPICA: Do not abort table load on invalid space ID
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>
Diffstat (limited to 'drivers/acpi/acpica/excreate.c')
| -rw-r--r-- | drivers/acpi/acpica/excreate.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index 8a06dc523af7..c66562b4311b 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -267,7 +267,7 @@ acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) * * PARAMETERS: aml_start - Pointer to the region declaration AML * aml_length - Max length of the declaration AML - * region_space - space_iD for the region + * space_id - Address space ID for the region * walk_state - Current state * * RETURN: Status @@ -279,7 +279,7 @@ acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) acpi_status acpi_ex_create_region(u8 * aml_start, u32 aml_length, - u8 region_space, struct acpi_walk_state *walk_state) + u8 space_id, struct acpi_walk_state *walk_state) { acpi_status status; union acpi_operand_object *obj_desc; @@ -304,16 +304,19 @@ acpi_ex_create_region(u8 * aml_start, * Space ID must be one of the predefined IDs, or in the user-defined * range */ - if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && - (region_space < ACPI_USER_REGION_BEGIN) && - (region_space != ACPI_ADR_SPACE_DATA_TABLE)) { - ACPI_ERROR((AE_INFO, "Invalid AddressSpace type 0x%X", - region_space)); - return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); + if (!acpi_is_valid_space_id(space_id)) { + /* + * Print an error message, but continue. We don't want to abort + * a table load for this exception. Instead, if the region is + * actually used at runtime, abort the executing method. + */ + ACPI_ERROR((AE_INFO, + "Invalid/unknown Address Space ID: 0x%2.2X", + space_id)); } ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n", - acpi_ut_get_region_name(region_space), region_space)); + acpi_ut_get_region_name(space_id), space_id)); /* Create the region descriptor */ @@ -339,7 +342,7 @@ acpi_ex_create_region(u8 * aml_start, /* Init the region from the operands */ - obj_desc->region.space_id = region_space; + obj_desc->region.space_id = space_id; obj_desc->region.address = 0; obj_desc->region.length = 0; obj_desc->region.node = node; |