drm/i915: remove restore in resume

Don't need extra config restore like for intel_agp, which
might cause resume hang issue found by Alan on 845G.

Cc: Stable Team <stable@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c57c174..b93814c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -99,8 +99,6 @@ static int i915_resume(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
        int ret = 0;
 
-       pci_set_power_state(dev->pdev, PCI_D0);
-       pci_restore_state(dev->pdev);
        if (pci_enable_device(dev->pdev))
                return -1;
        pci_set_master(dev->pdev);