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author | Bob Moore <robert.moore@intel.com> | 2009-04-22 02:48:57 (GMT) |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2009-05-27 04:30:48 (GMT) |
commit | 33a1d461d294722dd15ffe17651bdd48b5763883 (patch) | |
tree | 4e4dd08443d0a6454e3b054eb693c0c7180d0922 | |
parent | 8eb7b2477c4e4fec4788605e4edb5f7acafb59ff (diff) | |
download | linux-33a1d461d294722dd15ffe17651bdd48b5763883.tar.xz |
ACPICA: Change behavior of object copy for mutex/event objects
When copying these internal objects, cannot simply copy the
underlying OS object. A new OS object must be created.
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>
-rw-r--r-- | drivers/acpi/acpica/utcopy.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c index 919624f..0f0c64b 100644 --- a/drivers/acpi/acpica/utcopy.c +++ b/drivers/acpi/acpica/utcopy.c @@ -676,6 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, { u16 reference_count; union acpi_operand_object *next_object; + acpi_status status; /* Save fields from destination that we don't want to overwrite */ @@ -768,6 +769,28 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, } break; + /* + * For Mutex and Event objects, we cannot simply copy the underlying + * OS object. We must create a new one. + */ + case ACPI_TYPE_MUTEX: + + status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex); + if (ACPI_FAILURE(status)) { + return status; + } + break; + + case ACPI_TYPE_EVENT: + + status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, + &dest_desc->event. + os_semaphore); + if (ACPI_FAILURE(status)) { + return status; + } + break; + default: /* Nothing to do for other simple objects */ break; |