diff options
| -rw-r--r-- | drivers/acpi/osl.c | 12 | ||||
| -rw-r--r-- | drivers/acpi/video.c | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 147bc1b91b42..3f2bdc812d23 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1810,6 +1810,16 @@ acpi_status __init acpi_os_initialize(void) acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block); acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block); acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block); + if (acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) { + /* + * Use acpi_os_map_generic_address to pre-map the reset + * register if it's in system memory. + */ + int rv; + + rv = acpi_os_map_generic_address(&acpi_gbl_FADT.reset_register); + pr_debug(PREFIX "%s: map reset_reg status %d\n", __func__, rv); + } return AE_OK; } @@ -1838,6 +1848,8 @@ acpi_status acpi_os_terminate(void) acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block); acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block); acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block); + if (acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) + acpi_os_unmap_generic_address(&acpi_gbl_FADT.reset_register); destroy_workqueue(kacpid_wq); destroy_workqueue(kacpi_notify_wq); diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 101fb090dcb9..fb9ffe9adc64 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -82,7 +82,7 @@ module_param(allow_duplicates, bool, 0644); * For Windows 8 systems: used to decide if video module * should skip registering backlight interface of its own. */ -static int use_native_backlight_param = -1; +static int use_native_backlight_param = 1; module_param_named(use_native_backlight, use_native_backlight_param, int, 0444); static bool use_native_backlight_dmi = false; |