From 67e77c5ae8bff6f805d207541f1315051248a87b Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 20 Aug 2010 22:26:30 +0200 Subject: [PATCH] drm/i915: unload: fix unpin_work related races Kill any outstanding unpin_work when destroying the corresponding crtc. Then flush the workqueue before the gem teardown, in case any unpin work is still outstanding. Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ drivers/gpu/drm/i915/intel_display.c | 14 ++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 970c338323a8..27a826e3170a 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2292,6 +2292,9 @@ int i915_driver_unload(struct drm_device *dev) intel_opregion_free(dev, 0); if (drm_core_check_feature(dev, DRIVER_MODESET)) { + /* Flush any outstanding unpin_work. */ + flush_workqueue(dev_priv->wq); + i915_gem_free_all_phys_object(dev); mutex_lock(&dev->struct_mutex); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ccfc10559c17..794d4ac0c40f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4850,8 +4850,22 @@ void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj) static void intel_crtc_destroy(struct drm_crtc *crtc) { struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + struct drm_device *dev = crtc->dev; + struct intel_unpin_work *work; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + work = intel_crtc->unpin_work; + intel_crtc->unpin_work = NULL; + spin_unlock_irqrestore(&dev->event_lock, flags); + + if (work) { + cancel_work_sync(&work->work); + kfree(work); + } drm_crtc_cleanup(crtc); + kfree(intel_crtc); } -- 2.34.1