From 8e8f8aec2a8deba35af6ba2d3129f0d7bcfd3902 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Thu, 12 Sep 2013 13:58:17 -0300 Subject: [PATCH] drm/i915: don't save/restore LBB on Gen5+ MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Because this PCI config register doesn't exist on Gen5+. Signed-off-by: Paulo Zanoni Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_suspend.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 70db618989c4..3538370e3a47 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -340,7 +340,9 @@ int i915_save_state(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; int i; - pci_read_config_byte(dev->pdev, LBB, &dev_priv->regfile.saveLBB); + if (INTEL_INFO(dev)->gen <= 4) + pci_read_config_byte(dev->pdev, LBB, + &dev_priv->regfile.saveLBB); mutex_lock(&dev->struct_mutex); @@ -390,7 +392,9 @@ int i915_restore_state(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; int i; - pci_write_config_byte(dev->pdev, LBB, dev_priv->regfile.saveLBB); + if (INTEL_INFO(dev)->gen <= 4) + pci_write_config_byte(dev->pdev, LBB, + dev_priv->regfile.saveLBB); mutex_lock(&dev->struct_mutex); -- 2.20.1