From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Widawsky Subject: [PATCH 1/7] drm/i915: Prevent using uninitialized MMIO funcs Date: Fri, 4 Oct 2013 21:22:49 -0700 Message-ID: <1380946975-14431-1-git-send-email-benjamin.widawsky@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: 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) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Intel GFX Cc: Ben Widawsky List-Id: intel-gfx@lists.freedesktop.org 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 --- 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); -- 1.8.4