diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index 7099ff9cf8c5..b8d4e07d2043 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -147,6 +147,7 @@ static union acpi_object *amdgpu_atif_call(struct amdgpu_atif *atif, struct acpi_buffer *params) { acpi_status status; + union acpi_object *obj; union acpi_object atif_arg_elements[2]; struct acpi_object_list atif_arg; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; @@ -169,16 +170,24 @@ static union acpi_object *amdgpu_atif_call(struct amdgpu_atif *atif, status = acpi_evaluate_object(atif->handle, NULL, &atif_arg, &buffer); + obj = (union acpi_object *)buffer.pointer; - /* Fail only if calling the method fails and ATIF is supported */ - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + /* Fail if calling the method fails */ + if (ACPI_FAILURE(status)) { DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n", acpi_format_exception(status)); - kfree(buffer.pointer); + kfree(obj); return NULL; } - return buffer.pointer; + if (obj->type != ACPI_TYPE_BUFFER) { + DRM_DEBUG_DRIVER("bad object returned from ATIF: %d\n", + obj->type); + kfree(obj); + return NULL; + } + + return obj; } /** @@ -383,6 +392,8 @@ static int amdgpu_atif_query_backlight_caps(struct amdgpu_atif *atif) characteristics.min_input_signal; atif->backlight_caps.max_input_signal = characteristics.max_input_signal; + atif->backlight_caps.ac_level = characteristics.ac_level; + atif->backlight_caps.dc_level = characteristics.dc_level; out: kfree(info); return err; @@ -789,6 +800,7 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, return -EIO; } + kfree(info); return 0; } @@ -1268,6 +1280,8 @@ void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps) caps->caps_valid = atif->backlight_caps.caps_valid; caps->min_input_signal = atif->backlight_caps.min_input_signal; caps->max_input_signal = atif->backlight_caps.max_input_signal; + caps->ac_level = atif->backlight_caps.ac_level; + caps->dc_level = atif->backlight_caps.dc_level; } /** |