Messages in this thread Patch in this message |  | | From | Greg Kroah-Hartman <> | Subject | [ 27/50] drm/i915: fix rps.vlv_work initialization | Date | Wed, 16 Oct 2013 10:45:13 -0700 |
| |
3.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Imre Deak <imre.deak@intel.com>
commit 671952a2a290a90017c64e75b7dd0343b0d005b4 upstream.
During driver loading we are initializing rps.vlv_work in valleyview_enable_rps() via the rps.delayed_resume_work delayed work. This is too late since we are using vlv_work already via i915_driver_load()->intel_uncore_sanitize()-> intel_disable_gt_powersave(). This at least leads to the following kernel warning:
INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator.
Fix this by initialzing vlv_work before we call intel_uncore_sanitize().
The regression was introduced in
commit 7dcd2677ea912573d9ed4bcd629b0023b2d11505 Author: Konstantin Khlebnikov <khlebnikov@openvz.org> Date: Wed Jul 17 10:22:58 2013 +0400
drm/i915: fix long-standing SNB regression in power consumption after resume
though there was no good reason to initialize the static vlv_work from another delayed work to begin with (especially since this will happen multiple times).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69397 Tested-by: shui yangwei <yangweix.shui@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/i915/intel_pm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3603,8 +3603,6 @@ static void valleyview_enable_rps(struct dev_priv->rps.rpe_delay), dev_priv->rps.rpe_delay); - INIT_DELAYED_WORK(&dev_priv->rps.vlv_work, vlv_rps_timer_work); - valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); /* requires MSI enabled */ @@ -5567,6 +5565,8 @@ void intel_pm_init(struct drm_device *de INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, intel_gen6_powersave_work); + + INIT_DELAYED_WORK(&dev_priv->rps.vlv_work, vlv_rps_timer_work); } int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val)
|  |