From patchwork Sun Apr 16 08:04:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 9682561 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5A9B360209 for ; Sun, 16 Apr 2017 08:06:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4CB0128111 for ; Sun, 16 Apr 2017 08:06:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3FCEC28354; Sun, 16 Apr 2017 08:06:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 736FF2815E for ; Sun, 16 Apr 2017 08:06:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 64082891DA; Sun, 16 Apr 2017 08:06:19 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id AEBE2891DA for ; Sun, 16 Apr 2017 08:06:18 +0000 (UTC) Received: from localhost (LFbn-1-12060-104.w90-92.abo.wanadoo.fr [90.92.122.104]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 0DA16480; Sun, 16 Apr 2017 08:06:17 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Date: Sun, 16 Apr 2017 10:04:18 +0200 Message-Id: <20170416080227.671834007@linuxfoundation.org> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20170416080227.593797230@linuxfoundation.org> References: <20170416080227.593797230@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Cc: Jani Nikula , Greg Kroah-Hartman , intel-gfx@lists.freedesktop.org, stable@vger.kernel.org, "Paneri, Praveen" , Daniel Vetter Subject: [Intel-gfx] [PATCH 4.10 01/29] drm/i915: Fix forcewake active domain tracking 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP 4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tvrtko Ursulin commit 6aef660370a9c246956ba6d01eebd8063c4214cb upstream. In commit 003342a50021 ("drm/i915: Keep track of active forcewake domains in a bitmask") I forgot to adjust the newly introduce fw_domains_active state across reset. This caused the assert_forcewakes_inactive to trigger during suspend and resume if there were user held forcewakes. v2: Bitmask checks are required since vfuncs are not always present. v3: Move bitmask tracking to get/put vfunc for simplicity. (Chris Wilson) Signed-off-by: Tvrtko Ursulin Fixes: 003342a50021 ("drm/i915: Keep track of active forcewake domains in a bitmask") Testcase: igt/drv_suspend/forcewake Cc: Tvrtko Ursulin Cc: "Paneri, Praveen" Cc: Chris Wilson Cc: Daniel Vetter Cc: Jani Nikula Cc: intel-gfx@lists.freedesktop.org Reviewed-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/20170310093249.4484-1-tvrtko.ursulin@linux.intel.com (cherry picked from commit b8473050805f35add97f3ff57570d55a01808df5) Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/intel_uncore.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -119,6 +119,8 @@ fw_domains_get(struct drm_i915_private * for_each_fw_domain_masked(d, fw_domains, dev_priv) fw_domain_wait_ack(d); + + dev_priv->uncore.fw_domains_active |= fw_domains; } static void @@ -130,6 +132,8 @@ fw_domains_put(struct drm_i915_private * fw_domain_put(d); fw_domain_posting_read(d); } + + dev_priv->uncore.fw_domains_active &= ~fw_domains; } static void @@ -240,10 +244,8 @@ intel_uncore_fw_release_timer(struct hrt if (WARN_ON(domain->wake_count == 0)) domain->wake_count++; - if (--domain->wake_count == 0) { + if (--domain->wake_count == 0) dev_priv->uncore.funcs.force_wake_put(dev_priv, domain->mask); - dev_priv->uncore.fw_domains_active &= ~domain->mask; - } spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); @@ -455,10 +457,8 @@ static void __intel_uncore_forcewake_get fw_domains &= ~domain->mask; } - if (fw_domains) { + if (fw_domains) dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains); - dev_priv->uncore.fw_domains_active |= fw_domains; - } } /** @@ -962,7 +962,6 @@ static noinline void ___force_wake_auto( fw_domain_arm_timer(domain); dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains); - dev_priv->uncore.fw_domains_active |= fw_domains; } static inline void __force_wake_auto(struct drm_i915_private *dev_priv,