From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out1-smtp.messagingengine.com ([66.111.4.25]:51714 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750762AbbG3TCQ (ORCPT ); Thu, 30 Jul 2015 15:02:16 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 8EDD220BF5 for ; Thu, 30 Jul 2015 15:02:16 -0400 (EDT) Subject: FAILED: patch "[PATCH] drm/i915/vlv: remove wait for previous GFX clk disable" failed to apply to 4.1-stable tree To: jbarnes@virtuousgeek.org, daniel.vetter@intel.com, deepak.s@linux.intel.com, dvhart@linux.intel.com, imre.deak@intel.com, jani.nikula@intel.com Cc: From: Date: Thu, 30 Jul 2015 12:02:15 -0700 Message-ID: <1438282935195200@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 4.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From ac935a8b6db00079e2de65cadf4c735ed8f0175b Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Wed, 1 Apr 2015 14:22:58 -0700 Subject: [PATCH] drm/i915/vlv: remove wait for previous GFX clk disable request Looks like it was introduced in: commit 650ad970a39f8b6164fe8613edc150f585315289 Author: Imre Deak Date: Fri Apr 18 16:35:02 2014 +0300 drm/i915: vlv: factor out vlv_force_gfx_clock and check for pending force-of but I'm not sure why. It has caused problems for us in the past (see 85250ddff7a6 "drm/i915/chv: Remove Wait for a previous gfx force-off" and 8d4eee9cd7a1 "drm/i915: vlv: increase timeout when forcing on the GFX clock") and doesn't seem to be required, so let's just drop it. References: https://bugs.freedesktop.org/show_bug.cgi?id=89611 Signed-off-by: Jesse Barnes Tested-by: Darren Hart Reviewed-by: Deepak S Cc: stable@vger.kernel.org # c9c52e24194a: drm/i915/chv: Remove Wait ... Cc: stable@vger.kernel.org Signed-off-by: Jani Nikula [danvet: Repick this commit from 5df0582bf036bb5f9a8ad8db5884fe13a55347d1 becuase Dave Airlie lost it in his merge commit e1dee1973c74a0408b108d88c57a15be8a2d6d84.] Signed-off-by: Daniel Vetter diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 334bcc1badaa..6bb6c47db49f 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1286,21 +1286,7 @@ int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on) u32 val; int err; - val = I915_READ(VLV_GTLC_SURVIVABILITY_REG); - #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT) - /* Wait for a previous force-off to settle */ - if (force_on && !IS_CHERRYVIEW(dev_priv->dev)) { - /* WARN_ON only for the Valleyview */ - WARN_ON(!!(val & VLV_GFX_CLK_FORCE_ON_BIT) == force_on); - - err = wait_for(!COND, 20); - if (err) { - DRM_ERROR("timeout waiting for GFX clock force-off (%08x)\n", - I915_READ(VLV_GTLC_SURVIVABILITY_REG)); - return err; - } - } val = I915_READ(VLV_GTLC_SURVIVABILITY_REG); val &= ~VLV_GFX_CLK_FORCE_ON_BIT;