From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760923Ab2BJXLg (ORCPT ); Fri, 10 Feb 2012 18:11:36 -0500 Received: from mail-pw0-f46.google.com ([209.85.160.46]:42369 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932648Ab2BJWmo (ORCPT ); Fri, 10 Feb 2012 17:42:44 -0500 MIME-Version: 1.0 Message-Id: <20120210222947.989333740@clark.kroah.org> User-Agent: quilt/0.51-15.1 Date: Fri, 10 Feb 2012 14:29:52 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Seth Forshee , Alex Deucher , Dave Airlie Subject: [patch 33/86] drm/radeon/kms: disable output polling when suspended In-Reply-To: <20120210223514.GA24190@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Seth Forshee commit 86698c20f71d488b32c49ed4687fb3cf8a88a5ca upstream. Polling the outputs when the device is suspended can result in erroneous status updates. Disable output polling during suspend to prevent this from happening. Signed-off-by: Seth Forshee Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_device.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -864,6 +864,8 @@ int radeon_suspend_kms(struct drm_device if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; + drm_kms_helper_poll_disable(dev); + /* turn off display hw */ list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); @@ -950,6 +952,8 @@ int radeon_resume_kms(struct drm_device list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); } + + drm_kms_helper_poll_enable(dev); return 0; }