drm/i915: Add locking around chv_phy_control_init()

dev_priv->chv_phy_control is protected by the power_domains->lock
elsewhere, so also grab it when initializing chv_phy_control.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 821644d..974c4cb 100644 (file)
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -1685,7 +1685,9 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv)
        power_domains->initializing = true;
 
        if (IS_CHERRYVIEW(dev)) {
+               mutex_lock(&power_domains->lock);
                chv_phy_control_init(dev_priv);
+               mutex_unlock(&power_domains->lock);
        } else if (IS_VALLEYVIEW(dev)) {
                mutex_lock(&power_domains->lock);
                vlv_cmnlane_wa(dev_priv);