From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751529Ab1AWRpM (ORCPT ); Sun, 23 Jan 2011 12:45:12 -0500 Received: from outpost1.zedat.fu-berlin.de ([130.133.4.66]:45000 "EHLO outpost1.zedat.fu-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751197Ab1AWRpL (ORCPT ); Sun, 23 Jan 2011 12:45:11 -0500 From: Michael Karcher To: chris@chris-wilson.co.uk, airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/1] Use cachable mapping for i915 opregion. Date: Sun, 23 Jan 2011 18:23:34 +0100 Message-Id: <1295803414-5373-1-git-send-email-kernel@mkarcher.dialup.fu-berlin.de> X-Mailer: git-send-email 1.7.2.3 X-Originating-IP: 87.123.113.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The opregion is a shared memory region between ACPI and the graphics driver. As the ACPI mapping has been changed to cachable in commit 6d5bbf00d251cc73223a71422d69e069dc2e0b8d, mapping the intel opregion non-cachable now fails. As no bus-master hardware is involved in the opregion, cachable map should do no harm. Tested on a Fujitsu Lifebook P8010. Signed-off-by: Michael Karcher --- drivers/gpu/drm/i915/intel_opregion.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index f295a7a..dfaccd5 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -476,7 +476,7 @@ int intel_opregion_setup(struct drm_device *dev) return -ENOTSUPP; } - base = ioremap(asls, OPREGION_SIZE); + base = ioremap_cache(asls, OPREGION_SIZE); if (!base) return -ENOMEM; -- 1.7.2.3