From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail177-1.suw61.mandrillapp.com ([198.2.177.1]:59090 "EHLO mail177-1.suw61.mandrillapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751200AbcCAIPY (ORCPT ); Tue, 1 Mar 2016 03:15:24 -0500 Received: from pmta06.mandrill.prod.suw01.rsglab.com (127.0.0.1) by mail177-1.suw61.mandrillapp.com id hql7po22rtka for ; Tue, 1 Mar 2016 08:15:22 +0000 (envelope-from ) From: Subject: Patch "drm/i915: shut up gen8+ SDE irq dmesg noise" has been added to the 4.4-stable tree To: , , , , , Cc: , Message-Id: <145681420283129@kroah.com> Date: Tue, 01 Mar 2016 08:15:22 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled drm/i915: shut up gen8+ SDE irq dmesg noise to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-i915-shut-up-gen8-sde-irq-dmesg-noise.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 97e5ed1111dcc5300a0f59a55248cd243937a8ab Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 23 Oct 2015 10:56:12 +0200 Subject: drm/i915: shut up gen8+ SDE irq dmesg noise From: Daniel Vetter commit 97e5ed1111dcc5300a0f59a55248cd243937a8ab upstream. We get tons of cases where the master interrupt handler apparently set a bit, with the SDEIIR disagreeing. No idea what's going on there, but it's consistent on gen8+, no one seems to care about it and it's making CI results flaky. Shut it up. No idea what's going on here, but we've had fun with PCH interrupts before: commit 44498aea293b37af1d463acd9658cdce1ecdf427 Author: Paulo Zanoni Date: Fri Feb 22 17:05:28 2013 -0300 drm/i915: also disable south interrupts when handling them Note that there's a regression report in Bugzilla, and other regression reports on the mailing lists keep croping up. But no ill effects have ever been reported. But for paranoia still keep the message at a debug level as a breadcrumb, just in case. This message was introduced in commit 38cc46d73ed99dd7002f1406002e52d7975d16cc Author: Oscar Mateo Date: Mon Jun 16 16:10:59 2014 +0100 drm/i915/bdw: Ack interrupts before handling them (GEN8) v2: Improve commit message a bit. Cc: Paulo Zanoni Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1445590572-23631-2-git-send-email-daniel.vetter@ffwll.ch Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92084 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80896 Acked-by: Mika Kuoppala Signed-off-by: Daniel Vetter Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/i915_irq.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2354,9 +2354,13 @@ static irqreturn_t gen8_irq_handler(int spt_irq_handler(dev, pch_iir); else cpt_irq_handler(dev, pch_iir); - } else - DRM_ERROR("The master control interrupt lied (SDE)!\n"); - + } else { + /* + * Like on previous PCH there seems to be something + * fishy going on with forwarding PCH interrupts. + */ + DRM_DEBUG_DRIVER("The master control interrupt lied (SDE)!\n"); + } } I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); Patches currently in stable-queue which might be from daniel.vetter@ffwll.ch are queue-4.4/drm-gma500-use-correct-unref-in-the-gem-bo-create-function.patch queue-4.4/drm-i915-shut-up-gen8-sde-irq-dmesg-noise.patch