On Thu, Mar 06, 2014 at 11:18:38AM -0800, Jesse Barnes wrote:
> On Tue, 4 Mar 2014 19:23:09 +0200
> Imre Deak <imre.deak@xxxxxxxxx> wrote:
>
> > Needed by the next patch, wanting to set the underrun reporting as part
> > of a bigger dev_priv->irq_lock'ed sequence.
> >
> > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/i915_irq.c | 20 +++++++++++++++-----
> > 1 file changed, 15 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> > index 9d9309c..bc94cfb 100644
> > --- a/drivers/gpu/drm/i915/i915_irq.c
> > +++ b/drivers/gpu/drm/i915/i915_irq.c
> > @@ -387,17 +387,14 @@ static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
> > *
> > * Returns the previous state of underrun reporting.
> > */
> > -bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
> > - enum pipe pipe, bool enable)
> > +bool intel_set_cpu_fifo_underrun_reporting_nolock(struct drm_device *dev,
> > + enum pipe pipe, bool enable)
In i915_irq.c we tend to use a simple __ prefix instead of a _nolock
postfix. I've frobbed this while applying (and will fix up the next
patch).
-Daniel
> > {
> > struct drm_i915_private *dev_priv = dev->dev_private;
> > struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
> > struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > - unsigned long flags;
> > bool ret;
> >
> > - spin_lock_irqsave(&dev_priv->irq_lock, flags);
> > -
> > ret = !intel_crtc->cpu_fifo_underrun_disabled;
> >
> > if (enable == ret)
> > @@ -415,7 +412,20 @@ bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
> > broadwell_set_fifo_underrun_reporting(dev, pipe, enable);
> >
> > done:
> > + return ret;
> > +}
> > +
> > +bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
> > + enum pipe pipe, bool enable)
> > +{
> > + struct drm_i915_private *dev_priv = dev->dev_private;
> > + unsigned long flags;
> > + bool ret;
> > +
> > + spin_lock_irqsave(&dev_priv->irq_lock, flags);
> > + ret = intel_set_cpu_fifo_underrun_reporting_nolock(dev, pipe, enable);
> > spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
> > +
> > return ret;
> > }
> >
>
> Funky how diff left the spin_unlock line alone. :)
>
> Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
>
> --
> Jesse Barnes, Intel Open Source Technology Center
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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