On Mon, Feb 08, 2016 at 07:20:11PM +0200, Ville Syrjälä wrote:
> On Mon, Feb 08, 2016 at 10:47:11PM +0530, Sagar Arun Kamble wrote:
> > This changes ensures device is active when frequency limits are changed.
> > This is needed as we are writing to register RPNSWREQ in intel_set_rps.
> > If not done, might lead to undesired errors like:
> > [ 1965.189137] [drm:fw_domains_get] *ERROR* blitter: timed out waiting for forcewake ack to clear.
> >
> > v2: Added elaborate commit message. (Jani)
> > Fixing RPM reference drop in early exit paths. (Ville)
> >
> > Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
This seems to have fallem through some crack. I went and pushed it to dinq
now. Thanks for the patch.
>
> > ---
> > drivers/gpu/drm/i915/i915_sysfs.c | 10 ++++++++++
> > 1 file changed, 10 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
> > index c6188dd..2d576b7 100644
> > --- a/drivers/gpu/drm/i915/i915_sysfs.c
> > +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> > @@ -370,6 +370,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> >
> > flush_delayed_work(&dev_priv->rps.delayed_resume_work);
> >
> > + intel_runtime_pm_get(dev_priv);
> > +
> > mutex_lock(&dev_priv->rps.hw_lock);
> >
> > val = intel_freq_opcode(dev_priv, val);
> > @@ -378,6 +380,7 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> > val > dev_priv->rps.max_freq ||
> > val < dev_priv->rps.min_freq_softlimit) {
> > mutex_unlock(&dev_priv->rps.hw_lock);
> > + intel_runtime_pm_put(dev_priv);
> > return -EINVAL;
> > }
> >
> > @@ -398,6 +401,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> >
> > mutex_unlock(&dev_priv->rps.hw_lock);
> >
> > + intel_runtime_pm_put(dev_priv);
> > +
> > return count;
> > }
> >
> > @@ -433,6 +438,8 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> >
> > flush_delayed_work(&dev_priv->rps.delayed_resume_work);
> >
> > + intel_runtime_pm_get(dev_priv);
> > +
> > mutex_lock(&dev_priv->rps.hw_lock);
> >
> > val = intel_freq_opcode(dev_priv, val);
> > @@ -441,6 +448,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> > val > dev_priv->rps.max_freq ||
> > val > dev_priv->rps.max_freq_softlimit) {
> > mutex_unlock(&dev_priv->rps.hw_lock);
> > + intel_runtime_pm_put(dev_priv);
> > return -EINVAL;
> > }
> >
> > @@ -457,6 +465,8 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> >
> > mutex_unlock(&dev_priv->rps.hw_lock);
> >
> > + intel_runtime_pm_put(dev_priv);
> > +
> > return count;
> >
> > }
> > --
> > 1.9.1
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel OTC
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