From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754758Ab1AFAhs (ORCPT ); Wed, 5 Jan 2011 19:37:48 -0500 Received: from kroah.org ([198.145.64.141]:36056 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754710Ab1AFAbe (ORCPT ); Wed, 5 Jan 2011 19:31:34 -0500 X-Mailbox-Line: From gregkh@clark.site Wed Jan 5 16:23:08 2011 Message-Id: <20110106002308.793364768@clark.site> User-Agent: quilt/0.48-11.2 Date: Wed, 05 Jan 2011 16:23:47 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Alex Deucher , Dave Airlie Subject: [128/152] drm/radeon/kms/evergreen: reset the grbm blocks at resume and init In-Reply-To: <20110106002500.GA3172@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Alex Deucher commit 86f5c9edbb3bac37cc8cee6528a929005ba72aad upstream. This fixes module reloading and resume as the gfx block seems to be left in a bad state in some cases. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/evergreen.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2097,6 +2097,11 @@ int evergreen_resume(struct radeon_devic { int r; + /* reset the asic, the gfx blocks are often in a bad state + * after the driver is unloaded or after a resume + */ + if (radeon_asic_reset(rdev)) + dev_warn(rdev->dev, "GPU reset failed !\n"); /* Do not reset GPU before posting, on rv770 hw unlike on r500 hw, * posting will perform necessary task to bring back GPU into good * shape. @@ -2193,6 +2198,11 @@ int evergreen_init(struct radeon_device r = radeon_atombios_init(rdev); if (r) return r; + /* reset the asic, the gfx blocks are often in a bad state + * after the driver is unloaded or after a resume + */ + if (radeon_asic_reset(rdev)) + dev_warn(rdev->dev, "GPU reset failed !\n"); /* Post card if necessary */ if (!evergreen_card_posted(rdev)) { if (!rdev->bios) {