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| author |   Bob Moore <robert.moore@intel.com> | 2017-08-03 14:26:38 +0800 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-08-03 23:34:16 +0200 |
| commit | 583abc9bd585ff0d5fb7411e5601053b21fdd9d9 (patch) | |
| tree | 4c83bd0e735ae8a2ab2f61aeb2ceb3505adeff61 | |
| parent | ACPICA: Namespace: Update/fix an error message (diff) | |
| download | linux-dev-583abc9bd585ff0d5fb7411e5601053b21fdd9d9.tar.xz linux-dev-583abc9bd585ff0d5fb7411e5601053b21fdd9d9.zip | |
ACPICA: Add a comment, no functional change
ACPICA commit d586c29a026a6172c1113df4d75fd6d764196e77
Describe 2nd byte of the end_tag resource descriptor.
Link: https://github.com/acpica/acpica/commit/d586c29a
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/acpica/utresrc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c index d955bf852a03..517acf8e77c8 100644 --- a/drivers/acpi/acpica/utresrc.c +++ b/drivers/acpi/acpica/utresrc.c @@ -239,6 +239,13 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state, return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG); } + /* + * Don't attempt to perform any validation on the 2nd byte. + * Although all known ASL compilers insert a zero for the 2nd + * byte, it can also be a checksum (as per the ACPI spec), + * and this is occasionally seen in the field. July 2017. + */ + /* Return the pointer to the end_tag if requested */ if (!user_function) { |