[Intel-gfx] [PATCH] drm/i915/bdw: cancel the SW turbo tasks before runtime suspending

[Paulo Zanoni]

(adding Daisy Sun to the conversation)

2014-09-04 18:07 GMT-03:00 Paulo Zanoni <przanoni at gmail.com>:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> If we don't cancel them, we may end up running them while the device
> is runtime suspended, which will trigger lots and lots of WARNs on
> dmesg.
>
> Regression introduced by:
> commit c76bb61a71083b2d90504cc6d0dda2047c5d63ca
> Author: Daisy Sun <daisy.sun at intel.com>
> Date:   Mon Aug 11 11:08:38 2014 -0700
>     drm/i915/bdw: BDW Software Turbo
>
> Testcase: igt/pm_rpm/gem-execbuf (you may have to run it a few times)
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 8ff3755..4ce217b 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -1448,6 +1448,10 @@ static int intel_runtime_suspend(struct device *device)
>          * intel_mark_idle().
>          */
>         cancel_work_sync(&dev_priv->rps.work);
> +       if (dev_priv->rps.is_bdw_sw_turbo) {
> +               del_timer_sync(&dev_priv->rps.sw_turbo.flip_timer);
> +               cancel_work_sync(&dev_priv->rps.sw_turbo.work_max_freq);
> +       }
>         intel_runtime_pm_disable_interrupts(dev);
>
>         ret = intel_suspend_complete(dev_priv);
> --
> 2.1.0
>



-- 
Paulo Zanoni