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 <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 14133eb..c58ec5c 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -2261,6 +2261,9 @@
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 af4a263..04aada0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -978,7 +978,6 @@
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 4cccdce..26eb6e3 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_ring(dev, &dev_priv->bsd_ring);
}
-void
+static void
i915_gem_retire_work_handler(struct work_struct *work)
{
drm_i915_private_t *dev_priv;