drm/i915: Do not enable package C8 on unsupported hardware

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_display.c

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0b77916e7ea64ffc1adbb4f4cf2346c3357227bb..7ec8b488bb1d30b6b950a23eecc833b574ab4db0 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6518,6 +6518,9 @@ static void __hsw_disable_package_c8(struct drm_i915_private *dev_priv)
 
 void hsw_enable_package_c8(struct drm_i915_private *dev_priv)
 {
+       if (!HAS_PC8(dev_priv->dev))
+               return;
+
        mutex_lock(&dev_priv->pc8.lock);
        __hsw_enable_package_c8(dev_priv);
        mutex_unlock(&dev_priv->pc8.lock);
@@ -6525,6 +6528,9 @@ void hsw_enable_package_c8(struct drm_i915_private *dev_priv)
 
 void hsw_disable_package_c8(struct drm_i915_private *dev_priv)
 {
+       if (!HAS_PC8(dev_priv->dev))
+               return;
+
        mutex_lock(&dev_priv->pc8.lock);
        __hsw_disable_package_c8(dev_priv);
        mutex_unlock(&dev_priv->pc8.lock);
@@ -6562,6 +6568,9 @@ static void hsw_update_package_c8(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
        bool allow;
 
+       if (!HAS_PC8(dev_priv->dev))
+               return;
+
        if (!i915_enable_pc8)
                return;
 
@@ -6585,6 +6594,9 @@ done:
 
 static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv)
 {
+       if (!HAS_PC8(dev_priv->dev))
+               return;
+
        mutex_lock(&dev_priv->pc8.lock);
        if (!dev_priv->pc8.gpu_idle) {
                dev_priv->pc8.gpu_idle = true;
@@ -6595,6 +6607,9 @@ static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv)
 
 static void hsw_package_c8_gpu_busy(struct drm_i915_private *dev_priv)
 {
+       if (!HAS_PC8(dev_priv->dev))
+               return;
+
        mutex_lock(&dev_priv->pc8.lock);
        if (dev_priv->pc8.gpu_idle) {
                dev_priv->pc8.gpu_idle = false;