ACPI, i915: Register ACPI video even when not modesetting

The ACPI video driver defers registration to the i915 driver if the
system supports opregion-mediated backlight control. This registration
was only being performed in the KMS case. Ensure it's done even if we
don't have modesetting enabled.

http://bugzilla.kernel.org/show_bug.cgi?id=13048

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/i915_opregion.c
index 6942772..8dc1fd3 100644 (file)
--- a/drivers/gpu/drm/i915/i915_opregion.c
+++ b/drivers/gpu/drm/i915/i915_opregion.c
@@ -370,11 +370,8 @@ int intel_opregion_init(struct drm_device *dev, int resume)
        if (mboxes & MBOX_ACPI) {
                DRM_DEBUG("Public ACPI methods supported\n");
                opregion->acpi = base + OPREGION_ACPI_OFFSET;
-               if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+               if (drm_core_check_feature(dev, DRIVER_MODESET))
                        intel_didl_outputs(dev);
-                       if (!resume)
-                               acpi_video_register();
-               }
        } else {
                DRM_DEBUG("Public ACPI methods not supported\n");
                err = -ENOTSUPP;
@@ -391,6 +388,10 @@ int intel_opregion_init(struct drm_device *dev, int resume)
                opregion->asle = base + OPREGION_ASLE_OFFSET;
        }
 
+       if (!resume)
+               acpi_video_register();
+
+
        /* Notify BIOS we are ready to handle ACPI video ext notifs.
         * Right now, all the events are handled by the ACPI video module.
         * We don't actually need to do anything with them. */