[Intel-gfx] [PATCH 2/2] drm/i915: Don't save/restore hardware status page address register

[Zhenyu Wang]

It's cleaned before saving and re-initialized after restoring.
So don't need to save/restore it. And also new chip has new address
for hardware status page register, don't write to old address.

Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_suspend.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 0521ecf..2f6c061 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -797,9 +797,6 @@ int i915_save_state(struct drm_device *dev)
 
 	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
 
-	/* Hardware status page */
-	dev_priv->saveHWS = I915_READ(HWS_PGA);
-
 	i915_save_display(dev);
 
 	/* Interrupt state */
@@ -846,9 +843,6 @@ int i915_restore_state(struct drm_device *dev)
 
 	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
 
-	/* Hardware status page */
-	I915_WRITE(HWS_PGA, dev_priv->saveHWS);
-
 	i915_restore_display(dev);
 
 	/* Interrupt state */
-- 
1.7.1