From fd08923384385400101c71ac0d21d37d6b23b00d Mon Sep 17 00:00:00 2001 From: Sagar Arun Kamble Date: Wed, 5 Apr 2017 15:51:50 +0530 Subject: [PATCH] drm/i915: Suspend GuC prior to GPU Reset during GEM suspend i915 is currently doing a full GPU reset at the end of i915_gem_suspend() followed by GuC suspend in i915_drm_suspend(). This GPU reset clobbers the GuC, causing the suspend request to then fail, leaving the GuC in an undefined state. We need to tell the GuC to suspend before we do the direct intel_gpu_reset(). v2: Commit message update. (Chris, Daniele) Fixes: 1c777c5d1dcd ("drm/i915/hsw: Fix GPU hang during resume from S3-devices state") Cc: Jeff McGee Cc: Daniele Ceraolo Spurio Cc: Chris Wilson Cc: Joonas Lahtinen Cc: Imre Deak Cc: Mika Kuoppala Signed-off-by: Sagar Arun Kamble Link: http://patchwork.freedesktop.org/patch/msgid/1491387710-20553-1-git-send-email-sagar.a.kamble@intel.com Reviewed-by: Daniele Ceraolo Spurio Acked-by: Chris Wilson Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_drv.c | 2 -- drivers/gpu/drm/i915/i915_gem.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 0595600fb775..94c61aa975d8 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1486,8 +1486,6 @@ static int i915_drm_suspend(struct drm_device *dev) goto out; } - intel_guc_suspend(dev_priv); - intel_display_suspend(dev); intel_dp_mst_suspend(dev); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4ca88f2539c0..28e77d28e276 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4456,6 +4456,8 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv) i915_gem_context_lost(dev_priv); mutex_unlock(&dev->struct_mutex); + intel_guc_suspend(dev_priv); + cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); cancel_delayed_work_sync(&dev_priv->gt.retire_work); -- 2.30.2