korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-25 20:14:25 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915: Assert that we successfully downclock the GPU before suspend

Browse Source 
Before suspending, we wait upon the outstanding GPU requests and flush
our pending idle handlers. This should downclock the GPU to its lowest
power state. Add a WARN to check that the delayed tasks were run and did
their job properly.

Suggested-by: Akash Goel <akash.goel@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2014-11-25 11:56:33 +00:00 committed by Daniel Vetter
parent 4feb765943
commit bdcf120bfc
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/i915/i915_gem.c
View File

@ -4581,6 +4581,11 @@ i915_gem_suspend(struct drm_device *dev)
cancel_delayed_work_sync(&dev_priv->mm.retire_work);
flush_delayed_work(&dev_priv->mm.idle_work);
/* Assert that we sucessfully flushed all the work and
* reset the GPU back to its idle, low power state.
*/
WARN_ON(dev_priv->mm.busy);
return 0;
err: