From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Thu, 21 Nov 2013 15:47:15 +0000 (-0200)
Subject: drm/i915: WARN if !HAS_PC8 when enabling/disabling PC8
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7125ecb8297a122d60b2b4be9490f49bfadff8e0;p=linux-beck.git

drm/i915: WARN if !HAS_PC8 when enabling/disabling PC8

We already have some checks and shouldn't be reaching these places on
!HAS_PC8 platforms, but add a WARN,  just in case.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 10a803f69360..895759b5569f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6638,6 +6638,8 @@ void hsw_enable_pc8_work(struct work_struct *__work)
 	struct drm_device *dev = dev_priv->dev;
 	uint32_t val;
 
+	WARN_ON(!HAS_PC8(dev));
+
 	if (dev_priv->pc8.enabled)
 		return;
 
@@ -6683,6 +6685,8 @@ static void __hsw_disable_package_c8(struct drm_i915_private *dev_priv)
 	if (dev_priv->pc8.disable_count != 1)
 		return;
 
+	WARN_ON(!HAS_PC8(dev));
+
 	cancel_delayed_work_sync(&dev_priv->pc8.enable_work);
 	if (!dev_priv->pc8.enabled)
 		return;