ACPICA: Update default space handlers.

This patch adds code that is already in ACPICA upstream, so applying
it can help to reduce the source code differences between Linux and
ACPICA upstream.

This code fragment is only useful for ACPICA utilities and no
functional changes to the Linux kernel should result from it.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 303429bb4d5d6631878878a872b3f0c46f82f390..9d28867e60dc8b2c907e8cc76c92d10d95caa68e 100644 (file)
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -400,6 +400,7 @@ acpi_ex_pci_config_space_handler(u32 function,
        switch (function) {
        case ACPI_READ:
 
+               *value = 0;
                status = acpi_os_read_pci_configuration(pci_id, pci_register,
                                                        value, bit_width);
                break;