[Intel-gfx] [PATCH 08/17] drm/i915: Drop local struct_mutex around intel_init_emon[ilk]

Chris Wilson chris at chris-wilson.co.uk
Sun Aug 28 20:46:15 UTC 2016


Access to intel_init_emon() is strictly ordered by gt_powersave, using
struct_mutex around it is overkill (and will conflict with the caller
holding struct_mutex themselves).

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_pm.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index aba6fd036c4e..5e2a33d066c4 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6773,9 +6773,7 @@ void intel_autoenable_gt_powersave(struct drm_i915_private *dev_priv)
 
 	if (IS_IRONLAKE_M(dev_priv)) {
 		ironlake_enable_drps(dev_priv);
-		mutex_lock(&dev_priv->drm.struct_mutex);
 		intel_init_emon(dev_priv);
-		mutex_unlock(&dev_priv->drm.struct_mutex);
 	} else if (INTEL_INFO(dev_priv)->gen >= 6) {
 		/*
 		 * PCU communication is slow and this doesn't need to be
-- 
2.9.3



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