linux-kernel - [PATCH] i915: Register ACPI video even when not modesetting

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Message-ID: <20090415204636.GA32365@srcf.ucam.org>
Date:	Wed, 15 Apr 2009 21:46:36 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	intel-gfx@...ts.freedesktop.org
Cc:	acpi-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] 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.

Signed-off-by: Matthew Garrett <mjg@...hat.com>

diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/i915_opregion.c
index 6942772..8dc1fd3 100644
--- 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. */

-- 
Matthew Garrett | mjg59@...f.ucam.org
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