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authorImre Deak <imre.deak@intel.com>2014-04-14 21:24:27 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-05-05 11:08:55 +0400
commitd46c05175e0da37ad2795c775161f15302ce6c89 (patch)
treec356d78429bc67dbad023894027f2f57a2968e53 /drivers/gpu/drm/i915/i915_sysfs.c
parent3b2c1bfe20da09301965f0acb82d3012a568dc83 (diff)
downloadlinux-d46c05175e0da37ad2795c775161f15302ce6c89.tar.xz
drm/i915: get a runtime PM ref for debugfs entries where needed
These debugfs entries access registers that need the D0 power state so get an RPM ref for them. v2: - for all these entries we only need D0 state, so get only an RPM ref, not a power domain ref (Daniel, Paulo) - the dpio entry is not an issue any more as it got removed (Ville) - restore commit message from v1 (Paulo) Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_sysfs.c')
-rw-r--r--drivers/gpu/drm/i915/i915_sysfs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 9c57029f6f4b..3620997e43f5 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -263,6 +263,8 @@ static ssize_t gt_cur_freq_mhz_show(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);
if (IS_VALLEYVIEW(dev_priv->dev)) {
u32 freq;
@@ -273,6 +275,8 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
}
mutex_unlock(&dev_priv->rps.hw_lock);
+ intel_runtime_pm_put(dev_priv);
+
return snprintf(buf, PAGE_SIZE, "%d\n", ret);
}