drm/vmwgfx: Return -ERESTARTSYS when interrupted by a signal.

Fixes for TTM API change.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

@@ -386,7 +386,7 @@ static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
 		return 0;
 
 	ret = vmw_gmr_bind(dev_priv, bo);
-	if (likely(ret == 0 || ret == -ERESTART))
+	if (likely(ret == 0 || ret == -ERESTARTSYS))
 		return ret;
 
 
@@ -429,7 +429,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
 
 	ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
 	if (unlikely(ret != 0)) {
-		ret = -ERESTART;
+		ret = -ERESTARTSYS;
 		goto out_no_cmd_mutex;
 	}
 

drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c

@@ -191,7 +191,7 @@ static int vmw_fifo_wait_noirq(struct vmw_private *dev_priv,
 		}
 		schedule_timeout(1);
 		if (interruptible && signal_pending(current)) {
-			ret = -ERESTART;
+			ret = -ERESTARTSYS;
 			break;
 		}
 	}
@@ -237,9 +237,7 @@ static int vmw_fifo_wait(struct vmw_private *dev_priv,
 		    (dev_priv->fifo_queue,
 		     !vmw_fifo_is_full(dev_priv, bytes), timeout);
 
-	if (unlikely(ret == -ERESTARTSYS))
-		ret = -ERESTART;
-	else if (unlikely(ret == 0))
+	if (unlikely(ret == 0))
 		ret = -EBUSY;
 	else if (likely(ret > 0))
 		ret = 0;

drivers/gpu/drm/vmwgfx/vmwgfx_irq.c

@@ -155,7 +155,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv,
 					    TASK_UNINTERRUPTIBLE);
 		}
 		if (interruptible && signal_pending(current)) {
-			ret = -ERESTART;
+			ret = -ERESTARTSYS;
 			break;
 		}
 	}
@@ -218,9 +218,7 @@ int vmw_wait_fence(struct vmw_private *dev_priv,
 		     vmw_fence_signaled(dev_priv, sequence),
 		     timeout);
 
-	if (unlikely(ret == -ERESTARTSYS))
-		ret = -ERESTART;
-	else if (unlikely(ret == 0))
+	if (unlikely(ret == 0))
 		ret = -EBUSY;
 	else if (likely(ret > 0))
 		ret = 0;