From patchwork Sat Oct 5 04:22:49 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 2990731 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B20839F1C3 for ; Sat, 5 Oct 2013 04:25:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E69F9202C7 for ; Sat, 5 Oct 2013 04:25:13 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id D8E18202C1 for ; Sat, 5 Oct 2013 04:25:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B0E8BE6A0E for ; Fri, 4 Oct 2013 21:25:11 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 3485143866 for ; Fri, 4 Oct 2013 21:23:02 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 04 Oct 2013 21:23:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="4.90,1037,1371106800"; d="scan'208"; a="411831708" Received: from unknown (HELO lundgren.intel.com) ([10.255.15.130]) by fmsmga002.fm.intel.com with ESMTP; 04 Oct 2013 21:23:01 -0700 From: Ben Widawsky To: Intel GFX Date: Fri, 4 Oct 2013 21:22:49 -0700 Message-Id: <1380946975-14431-1-git-send-email-benjamin.widawsky@intel.com> X-Mailer: git-send-email 1.8.4 Cc: Ben Widawsky Subject: [Intel-gfx] [PATCH 1/7] drm/i915: Prevent using uninitialized MMIO funcs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-4.9 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 For upcoming patches which will have GEN specific MMIO functions, we'll need to initialize the uncore data structure earlier than we do today. If we do not do this, the following will be problematic: intel_uncore_sanitize intel_disable_gt_powersave gen6_disable_rps I915_WRITE(GEN6_RC_CONTROL, 0); <--- MMIO intel_uncore_init // initializes MMIO By initializing the function pointers first, we should be safe. Signed-off-by: Ben Widawsky Reviewed-by: Damien Lespiau --- drivers/gpu/drm/i915/i915_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index f221631..0a84cd5 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1621,8 +1621,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_irq_init(dev); intel_pm_init(dev); - intel_uncore_sanitize(dev); intel_uncore_init(dev); + intel_uncore_sanitize(dev); /* Try to make sure MCHBAR is enabled before poking at it */ intel_setup_mchbar(dev);