From patchwork Wed Jul 29 19:21:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Herbert X-Patchwork-Id: 6895951 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0F6DF9F358 for ; Wed, 29 Jul 2015 19:21:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3042920647 for ; Wed, 29 Jul 2015 19:21:40 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 42AB820654 for ; Wed, 29 Jul 2015 19:21:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BFBD56EC64; Wed, 29 Jul 2015 12:21:38 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id 34B626EC64 for ; Wed, 29 Jul 2015 12:21:37 -0700 (PDT) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP; 29 Jul 2015 12:21:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,572,1432623600"; d="scan'208";a="773783077" Received: from mherber2-mobl.jf.intel.com ([10.7.202.122]) by orsmga002.jf.intel.com with ESMTP; 29 Jul 2015 12:21:36 -0700 From: Marc Herbert To: intel-gfx@lists.freedesktop.org Date: Wed, 29 Jul 2015 12:21:22 -0700 Message-Id: <1438197682-23297-1-git-send-email-marc.herbert@intel.com> X-Mailer: git-send-email 2.1.0 Cc: Marc Herbert Subject: [Intel-gfx] [PATCH] drm/i915/skl: revert duplicated WaBarrierPerformanceFixDisable:skl X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP With this simple git diff command one can see that skl_init_workarounds() got two copies of WaBarrierPerformanceFixDisable:skl: git diff -U21 ca6e4405779e^1 ca6e4405779e drivers/gpu/drm/i915/intel_ringbuffer.c This happened when the backmerge of drm-intel-fixes-2015-07-15 Merged the same fix on both sides. Same fix but not identical enough for git: with a different surrounding context; hence the code duplication. This commit merely reverts the output of the git command above = the duplication introduced in the backmerge. (This duplication was found while running git sanity checks on a _linearized_ i915 forklift for ChromeOS.) Signed-off-by: Marc Herbert Reviewed-by: Rodrigo Vivi Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) --- drivers/gpu/drm/i915/intel_ringbuffer.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 177f7ed16cf0..1c14233d179f 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1041,13 +1041,6 @@ static int skl_init_workarounds(struct intel_engine_cs *ring) WA_SET_BIT_MASKED(HIZ_CHICKEN, BDW_HIZ_POWER_COMPILER_CLOCK_GATING_DISABLE); - if (INTEL_REVID(dev) == SKL_REVID_C0 || - INTEL_REVID(dev) == SKL_REVID_D0) - /* WaBarrierPerformanceFixDisable:skl */ - WA_SET_BIT_MASKED(HDC_CHICKEN0, - HDC_FENCE_DEST_SLM_DISABLE | - HDC_BARRIER_PERFORMANCE_DISABLE); - if (INTEL_REVID(dev) <= SKL_REVID_D0) { /* *Use Force Non-Coherent whenever executing a 3D context. This