From: Daniel Vetter Date: Fri, 20 Aug 2010 22:25:16 +0000 (+0200) Subject: drm/i915: unload: fix retire_work races X-Git-Tag: firefly_0821_release~7613^2~3600^2~31^2~253 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=75ef9da2cdb64e7926404dd2b755bbbfe98eaeaf;p=firefly-linux-kernel-4.4.55.git drm/i915: unload: fix retire_work races ums-gem code correctly cancels the retire work (at lastclose time), kms does not do so. Fix this by canceling the work right after ideling the gpu. While staring at the code I noticed that the work function is not static. Fix this, too. Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 14133ebef33b..c58ec5c02919 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2261,6 +2261,9 @@ int i915_driver_unload(struct drm_device *dev) DRM_ERROR("failed to idle hardware: %d\n", ret); mutex_unlock(&dev->struct_mutex); + /* Cancel the retire work handler, which should be idle now. */ + cancel_delayed_work_sync(&dev_priv->mm.retire_work); + io_mapping_free(dev_priv->mm.gtt_mapping); if (dev_priv->mm.gtt_mtrr >= 0) { mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base, diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index af4a263cf257..04aada08a6f9 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -978,7 +978,6 @@ bool i915_seqno_passed(uint32_t seq1, uint32_t seq2); int i915_gem_object_get_fence_reg(struct drm_gem_object *obj); int i915_gem_object_put_fence_reg(struct drm_gem_object *obj); void i915_gem_retire_requests(struct drm_device *dev); -void i915_gem_retire_work_handler(struct work_struct *work); void i915_gem_clflush_object(struct drm_gem_object *obj); int i915_gem_object_set_domain(struct drm_gem_object *obj, uint32_t read_domains, diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4cccdce5f80f..26eb6e31c743 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1797,7 +1797,7 @@ i915_gem_retire_requests(struct drm_device *dev) i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); } -void +static void i915_gem_retire_work_handler(struct work_struct *work) { drm_i915_private_t *dev_priv;