[gem] Remove the drm_client_lock_take in set_domain.

We no longer need to use it to protect against shared ringbuffer access.

1 files changed, 0 insertions, 56 deletions

diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c
index e6eae42b..e8496a25 100644
--- a/linux-core/drm_lock.c
+++ b/linux-core/drm_lock.c
@@ -375,62 +375,6 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
 }
 EXPORT_SYMBOL(drm_idlelock_release);
 
-/**
- * Takes the lock on behalf of the client if needed, using the kernel context.
- *
- * This allows us to hide the hardware lock when it's required for protection
- * of data structures (such as command ringbuffer) shared with the X Server, and
- * a way for us to transition to lockless for those requests when the X Server
- * stops accessing the ringbuffer directly, without having to update the
- * other userland clients.
- */
-int drm_client_lock_take(struct drm_device *dev, struct drm_file *file_priv)
-{
-	int ret;
-	unsigned long irqflags;
-
-	/* If the client has the lock, we're already done. */
-	if (drm_i_have_hw_lock(dev, file_priv))
-		return 0;
-
-	mutex_unlock (&dev->struct_mutex);
-	/* Client doesn't hold the lock.  Block taking the lock with the kernel
-	 * context on behalf of the client, and return whether we were
-	 * successful.
-	 */
-	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
-	dev->lock.user_waiters++;
-	spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
-	ret = wait_event_interruptible(dev->lock.lock_queue,
-				       drm_lock_take(&dev->lock,
-						     DRM_KERNEL_CONTEXT));
-	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
-	dev->lock.user_waiters--;
-	if (ret != 0) {
-		spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
-	} else {
-		dev->lock.file_priv = file_priv;
-		dev->lock.lock_time = jiffies;
-		dev->lock.kernel_held = 1;
-		file_priv->lock_count++;
-		spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
-	}
-	mutex_lock (&dev->struct_mutex);
-	return ret;
-}
-EXPORT_SYMBOL(drm_client_lock_take);
-
-void drm_client_lock_release(struct drm_device *dev)
-{
-	if (dev->lock.kernel_held) {
-		dev->lock.kernel_held = 0;
-		dev->lock.file_priv = NULL;
-		drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
-	}
-}
-EXPORT_SYMBOL(drm_client_lock_release);
-
-
 int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv)
 {