Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
  drm/i915: apply HWSTAM writes to Ivy Bridge as well
  drm/i915: move IRQ function table init to i915_irq.c
  drm/i915/overlay: Fix unpinning along init error paths
  drm/i915: Don't call describe_obj on NULL pointers
  drm/i915: Hold struct_mutex during i915_save_state/i915_restore_state

7 files changed, 94 insertions, 109 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 4d46441..0a893f7 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1207,13 +1207,17 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	if (ret)
 		return ret;
 
-	seq_printf(m, "power context ");
-	describe_obj(m, dev_priv->pwrctx);
-	seq_printf(m, "\n");
+	if (dev_priv->pwrctx) {
+		seq_printf(m, "power context ");
+		describe_obj(m, dev_priv->pwrctx);
+		seq_printf(m, "\n");
+	}
 
-	seq_printf(m, "render context ");
-	describe_obj(m, dev_priv->renderctx);
-	seq_printf(m, "\n");
+	if (dev_priv->renderctx) {
+		seq_printf(m, "render context ");
+		describe_obj(m, dev_priv->renderctx);
+		seq_printf(m, "\n");
+	}
 
 	mutex_unlock(&dev->mode_config.mutex);
 
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 2b79588..e178702 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1266,30 +1266,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
 
 	intel_modeset_gem_init(dev);
 
-	if (IS_IVYBRIDGE(dev)) {
-		/* Share pre & uninstall handlers with ILK/SNB */
-		dev->driver->irq_handler = ivybridge_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ivybridge_enable_vblank;
-		dev->driver->disable_vblank = ivybridge_disable_vblank;
-	} else if (HAS_PCH_SPLIT(dev)) {
-		dev->driver->irq_handler = ironlake_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ironlake_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ironlake_enable_vblank;
-		dev->driver->disable_vblank = ironlake_disable_vblank;
-	} else {
-		dev->driver->irq_preinstall = i915_driver_irq_preinstall;
-		dev->driver->irq_postinstall = i915_driver_irq_postinstall;
-		dev->driver->irq_uninstall = i915_driver_irq_uninstall;
-		dev->driver->irq_handler = i915_driver_irq_handler;
-		dev->driver->enable_vblank = i915_enable_vblank;
-		dev->driver->disable_vblank = i915_disable_vblank;
-	}
-
 	ret = drm_irq_install(dev);
 	if (ret)
 		goto cleanup_gem;
@@ -2017,12 +1993,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	/* enable GEM by default */
 	dev_priv->has_gem = 1;
 
-	dev->driver->get_vblank_counter = i915_get_vblank_counter;
-	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
-	if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
-		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
-		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
-	}
+	intel_irq_init(dev);
 
 	/* Try to make sure MCHBAR is enabled before poking at it */
 	intel_setup_mchbar(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 609358f..013d304 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -765,14 +765,6 @@ static struct drm_driver driver = {
 	.resume = i915_resume,
 
 	.device_is_agp = i915_driver_device_is_agp,
-	.enable_vblank = i915_enable_vblank,
-	.disable_vblank = i915_disable_vblank,
-	.get_vblank_timestamp = i915_get_vblank_timestamp,
-	.get_scanout_position = i915_get_crtc_scanoutpos,
-	.irq_preinstall = i915_driver_irq_preinstall,
-	.irq_postinstall = i915_driver_irq_postinstall,
-	.irq_uninstall = i915_driver_irq_uninstall,
-	.irq_handler = i915_driver_irq_handler,
 	.reclaim_buffers = drm_core_reclaim_buffers,
 	.master_create = i915_master_create,
 	.master_destroy = i915_master_destroy,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index eddabf6..f245c58 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -997,8 +997,6 @@ extern unsigned int i915_enable_fbc;
 
 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
 extern int i915_resume(struct drm_device *dev);
-extern void i915_save_display(struct drm_device *dev);
-extern void i915_restore_display(struct drm_device *dev);
 extern int i915_master_create(struct drm_device *dev, struct drm_master *master);
 extern void i915_master_destroy(struct drm_device *dev, struct drm_master *master);
 
@@ -1033,33 +1031,12 @@ extern int i915_irq_emit(struct drm_device *dev, void *data,
 extern int i915_irq_wait(struct drm_device *dev, void *data,
 			 struct drm_file *file_priv);
 
-extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
-extern void i915_driver_irq_preinstall(struct drm_device * dev);
-extern int i915_driver_irq_postinstall(struct drm_device *dev);
-extern void i915_driver_irq_uninstall(struct drm_device * dev);
-
-extern irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS);
-extern void ironlake_irq_preinstall(struct drm_device *dev);
-extern int ironlake_irq_postinstall(struct drm_device *dev);
-extern void ironlake_irq_uninstall(struct drm_device *dev);
-
-extern irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS);
-extern void ivybridge_irq_preinstall(struct drm_device *dev);
-extern int ivybridge_irq_postinstall(struct drm_device *dev);
-extern void ivybridge_irq_uninstall(struct drm_device *dev);
+extern void intel_irq_init(struct drm_device *dev);
 
 extern int i915_vblank_pipe_set(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
 extern int i915_vblank_pipe_get(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
-extern int i915_enable_vblank(struct drm_device *dev, int crtc);
-extern void i915_disable_vblank(struct drm_device *dev, int crtc);
-extern int ironlake_enable_vblank(struct drm_device *dev, int crtc);
-extern void ironlake_disable_vblank(struct drm_device *dev, int crtc);
-extern int ivybridge_enable_vblank(struct drm_device *dev, int crtc);
-extern void ivybridge_disable_vblank(struct drm_device *dev, int crtc);
-extern u32 i915_get_vblank_counter(struct drm_device *dev, int crtc);
-extern u32 gm45_get_vblank_counter(struct drm_device *dev, int crtc);
 extern int i915_vblank_swap(struct drm_device *dev, void *data,
 			    struct drm_file *file_priv);
 
@@ -1070,13 +1047,6 @@ void
 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
 
 void intel_enable_asle (struct drm_device *dev);
-int i915_get_vblank_timestamp(struct drm_device *dev, int crtc,
-			      int *max_error,
-			      struct timeval *vblank_time,
-			      unsigned flags);
-
-int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
-			     int *vpos, int *hpos);
 
 #ifdef CONFIG_DEBUG_FS
 extern void i915_destroy_error_state(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index ae2b499..3b03f85 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -152,7 +152,7 @@ i915_pipe_enabled(struct drm_device *dev, int pipe)
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
-u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long high_frame;
@@ -184,7 +184,7 @@ u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
 	return (high1 << 8) | low;
 }
 
-u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int reg = PIPE_FRMCOUNT_GM45(pipe);
@@ -198,7 +198,7 @@ u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
 	return I915_READ(reg);
 }
 
-int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
+static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
 			     int *vpos, int *hpos)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -264,7 +264,7 @@ int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
 	return ret;
 }
 
-int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
+static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
 			      int *max_error,
 			      struct timeval *vblank_time,
 			      unsigned flags)
@@ -462,7 +462,7 @@ static void pch_irq_handler(struct drm_device *dev)
 		DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
 }
 
-irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -550,7 +550,7 @@ done:
 	return ret;
 }
 
-irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -1209,7 +1209,7 @@ static void i915_pageflip_stall_check(struct drm_device *dev, int pipe)
 	}
 }
 
-irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
+static irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -1454,7 +1454,7 @@ int i915_irq_wait(struct drm_device *dev, void *data,
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-int i915_enable_vblank(struct drm_device *dev, int pipe)
+static int i915_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1478,7 +1478,7 @@ int i915_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-int ironlake_enable_vblank(struct drm_device *dev, int pipe)
+static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1494,7 +1494,7 @@ int ironlake_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
+static int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1513,7 +1513,7 @@ int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-void i915_disable_vblank(struct drm_device *dev, int pipe)
+static void i915_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1529,7 +1529,7 @@ void i915_disable_vblank(struct drm_device *dev, int pipe)
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-void ironlake_disable_vblank(struct drm_device *dev, int pipe)
+static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1540,7 +1540,7 @@ void ironlake_disable_vblank(struct drm_device *dev, int pipe)
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-void ivybridge_disable_vblank(struct drm_device *dev, int pipe)
+static void ivybridge_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	unsigned long irqflags;
@@ -1728,7 +1728,7 @@ repeat:
 
 /* drm_dma.h hooks
 */
-void ironlake_irq_preinstall(struct drm_device *dev)
+static void ironlake_irq_preinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
@@ -1740,7 +1740,7 @@ void ironlake_irq_preinstall(struct drm_device *dev)
 		INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work);
 
 	I915_WRITE(HWSTAM, 0xeffe);
-	if (IS_GEN6(dev)) {
+	if (IS_GEN6(dev) || IS_GEN7(dev)) {
 		/* Workaround stalls observed on Sandy Bridge GPUs by
 		 * making the blitter command streamer generate a
 		 * write to the Hardware Status Page for
@@ -1769,7 +1769,7 @@ void ironlake_irq_preinstall(struct drm_device *dev)
 	POSTING_READ(SDEIER);
 }
 
-int ironlake_irq_postinstall(struct drm_device *dev)
+static int ironlake_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	/* enable kind of interrupts always enabled */
@@ -1841,7 +1841,7 @@ int ironlake_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
-int ivybridge_irq_postinstall(struct drm_device *dev)
+static int ivybridge_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	/* enable kind of interrupts always enabled */
@@ -1891,7 +1891,7 @@ int ivybridge_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
-void i915_driver_irq_preinstall(struct drm_device * dev)
+static void i915_driver_irq_preinstall(struct drm_device * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int pipe;
@@ -1918,7 +1918,7 @@ void i915_driver_irq_preinstall(struct drm_device * dev)
  * Must be called after intel_modeset_init or hotplug interrupts won't be
  * enabled correctly.
  */
-int i915_driver_irq_postinstall(struct drm_device *dev)
+static int i915_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	u32 enable_mask = I915_INTERRUPT_ENABLE_FIX | I915_INTERRUPT_ENABLE_VAR;
@@ -1994,7 +1994,7 @@ int i915_driver_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
-void ironlake_irq_uninstall(struct drm_device *dev)
+static void ironlake_irq_uninstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
@@ -2014,7 +2014,7 @@ void ironlake_irq_uninstall(struct drm_device *dev)
 	I915_WRITE(GTIIR, I915_READ(GTIIR));
 }
 
-void i915_driver_irq_uninstall(struct drm_device * dev)
+static void i915_driver_irq_uninstall(struct drm_device * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	int pipe;
@@ -2040,3 +2040,41 @@ void i915_driver_irq_uninstall(struct drm_device * dev)
 			   I915_READ(PIPESTAT(pipe)) & 0x8000ffff);
 	I915_WRITE(IIR, I915_READ(IIR));
 }
+
+void intel_irq_init(struct drm_device *dev)
+{
+	dev->driver->get_vblank_counter = i915_get_vblank_counter;
+	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
+	if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
+		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
+		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
+	}
+
+
+	dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
+	dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
+
+	if (IS_IVYBRIDGE(dev)) {
+		/* Share pre & uninstall handlers with ILK/SNB */
+		dev->driver->irq_handler = ivybridge_irq_handler;
+		dev->driver->irq_preinstall = ironlake_irq_preinstall;
+		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
+		dev->driver->irq_uninstall = ironlake_irq_uninstall;
+		dev->driver->enable_vblank = ivybridge_enable_vblank;
+		dev->driver->disable_vblank = ivybridge_disable_vblank;
+	} else if (HAS_PCH_SPLIT(dev)) {
+		dev->driver->irq_handler = ironlake_irq_handler;
+		dev->driver->irq_preinstall = ironlake_irq_preinstall;
+		dev->driver->irq_postinstall = ironlake_irq_postinstall;
+		dev->driver->irq_uninstall = ironlake_irq_uninstall;
+		dev->driver->enable_vblank = ironlake_enable_vblank;
+		dev->driver->disable_vblank = ironlake_disable_vblank;
+	} else {
+		dev->driver->irq_preinstall = i915_driver_irq_preinstall;
+		dev->driver->irq_postinstall = i915_driver_irq_postinstall;
+		dev->driver->irq_uninstall = i915_driver_irq_uninstall;
+		dev->driver->irq_handler = i915_driver_irq_handler;
+		dev->driver->enable_vblank = i915_enable_vblank;
+		dev->driver->disable_vblank = i915_disable_vblank;
+	}
+}
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index e8152d2..5257cfc 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -597,7 +597,7 @@ static void i915_restore_modeset_reg(struct drm_device *dev)
 	return;
 }
 
-void i915_save_display(struct drm_device *dev)
+static void i915_save_display(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
@@ -678,7 +678,6 @@ void i915_save_display(struct drm_device *dev)
 	}
 
 	/* VGA state */
-	mutex_lock(&dev->struct_mutex);
 	dev_priv->saveVGA0 = I915_READ(VGA0);
 	dev_priv->saveVGA1 = I915_READ(VGA1);
 	dev_priv->saveVGA_PD = I915_READ(VGA_PD);
@@ -688,10 +687,9 @@ void i915_save_display(struct drm_device *dev)
 		dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
 
 	i915_save_vga(dev);
-	mutex_unlock(&dev->struct_mutex);
 }
 
-void i915_restore_display(struct drm_device *dev)
+static void i915_restore_display(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
@@ -783,7 +781,6 @@ void i915_restore_display(struct drm_device *dev)
 	else
 		I915_WRITE(VGACNTRL, dev_priv->saveVGACNTRL);
 
-	mutex_lock(&dev->struct_mutex);
 	I915_WRITE(VGA0, dev_priv->saveVGA0);
 	I915_WRITE(VGA1, dev_priv->saveVGA1);
 	I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
@@ -791,7 +788,6 @@ void i915_restore_display(struct drm_device *dev)
 	udelay(150);
 
 	i915_restore_vga(dev);
-	mutex_unlock(&dev->struct_mutex);
 }
 
 int i915_save_state(struct drm_device *dev)
@@ -801,6 +797,8 @@ int i915_save_state(struct drm_device *dev)
 
 	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Hardware status page */
 	dev_priv->saveHWS = I915_READ(HWS_PGA);
 
@@ -840,6 +838,8 @@ int i915_save_state(struct drm_device *dev)
 	for (i = 0; i < 3; i++)
 		dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
 
+	mutex_unlock(&dev->struct_mutex);
+
 	return 0;
 }
 
@@ -850,6 +850,8 @@ int i915_restore_state(struct drm_device *dev)
 
 	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Hardware status page */
 	I915_WRITE(HWS_PGA, dev_priv->saveHWS);
 
@@ -867,6 +869,7 @@ int i915_restore_state(struct drm_device *dev)
 		I915_WRITE(IER, dev_priv->saveIER);
 		I915_WRITE(IMR, dev_priv->saveIMR);
 	}
+	mutex_unlock(&dev->struct_mutex);
 
 	intel_init_clock_gating(dev);
 
@@ -878,6 +881,8 @@ int i915_restore_state(struct drm_device *dev)
 	if (IS_GEN6(dev))
 		gen6_enable_rps(dev_priv);
 
+	mutex_lock(&dev->struct_mutex);
+
 	/* Cache mode state */
 	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
 
@@ -891,6 +896,8 @@ int i915_restore_state(struct drm_device *dev)
 	for (i = 0; i < 3; i++)
 		I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
 
+	mutex_unlock(&dev->struct_mutex);
+
 	intel_i2c_reset(dev);
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 56a8e2a..9e2959b 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1409,6 +1409,11 @@ void intel_setup_overlay(struct drm_device *dev)
 	overlay = kzalloc(sizeof(struct intel_overlay), GFP_KERNEL);
 	if (!overlay)
 		return;
+
+	mutex_lock(&dev->struct_mutex);
+	if (WARN_ON(dev_priv->overlay))
+		goto out_free;
+
 	overlay->dev = dev;
 
 	reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
@@ -1416,8 +1421,6 @@ void intel_setup_overlay(struct drm_device *dev)
 		goto out_free;
 	overlay->reg_bo = reg_bo;
 
-	mutex_lock(&dev->struct_mutex);
-
 	if (OVERLAY_NEEDS_PHYSICAL(dev)) {
 		ret = i915_gem_attach_phys_object(dev, reg_bo,
 						  I915_GEM_PHYS_OVERLAY_REGS,
@@ -1442,8 +1445,6 @@ void intel_setup_overlay(struct drm_device *dev)
                 }
 	}
 
-	mutex_unlock(&dev->struct_mutex);
-
 	/* init all values */
 	overlay->color_key = 0x0101fe;
 	overlay->brightness = -19;
@@ -1452,7 +1453,7 @@ void intel_setup_overlay(struct drm_device *dev)
 
 	regs = intel_overlay_map_regs(overlay);
 	if (!regs)
-		goto out_free_bo;
+		goto out_unpin_bo;
 
 	memset(regs, 0, sizeof(struct overlay_registers));
 	update_polyphase_filter(regs);
@@ -1461,15 +1462,17 @@ void intel_setup_overlay(struct drm_device *dev)
 	intel_overlay_unmap_regs(overlay, regs);
 
 	dev_priv->overlay = overlay;
+	mutex_unlock(&dev->struct_mutex);
 	DRM_INFO("initialized overlay support\n");
 	return;
 
 out_unpin_bo:
-	i915_gem_object_unpin(reg_bo);
+	if (!OVERLAY_NEEDS_PHYSICAL(dev))
+		i915_gem_object_unpin(reg_bo);
 out_free_bo:
 	drm_gem_object_unreference(&reg_bo->base);
-	mutex_unlock(&dev->struct_mutex);
 out_free:
+	mutex_unlock(&dev->struct_mutex);
 	kfree(overlay);
 	return;
 }