drm/i915: Fix regression in ba3d8d749b

[pandora-kernel.git] / drivers / gpu / drm / drm_lock.c

diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index e2f70a5..1e28b90 100644 (file)
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -37,6 +37,8 @@
 
 static int drm_notifier(void *priv);
 
+static int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
+
 /**
  * Lock ioctl.
  *
@@ -92,7 +94,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
                }
 
                /* Contention */
+               mutex_unlock(&drm_global_mutex);
                schedule();
+               mutex_lock(&drm_global_mutex);
                if (signal_pending(current)) {
                        ret = -EINTR;
                        break;
@@ -122,9 +126,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
                block_all_signals(drm_notifier, &dev->sigdata, &dev->sigmask);
        }
 
-       if (dev->driver->dma_ready && (lock->flags & _DRM_LOCK_READY))
-               dev->driver->dma_ready(dev);
-
        if (dev->driver->dma_quiescent && (lock->flags & _DRM_LOCK_QUIESCENT))
        {
                if (dev->driver->dma_quiescent(dev)) {
@@ -134,12 +135,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
                }
        }
 
-       if (dev->driver->kernel_context_switch &&
-           dev->last_context != lock->context) {
-               dev->driver->kernel_context_switch(dev, dev->last_context,
-                                                  lock->context);
-       }
-
        return 0;
 }
 
@@ -157,7 +152,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
        struct drm_lock *lock = data;
-       struct drm_master *master = file_priv->master;
 
        if (lock->context == DRM_KERNEL_CONTEXT) {
                DRM_ERROR("Process %d using kernel context %d\n",
@@ -167,17 +161,6 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 
        atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]);
 
-       /* kernel_context_switch isn't used by any of the x86 drm
-        * modules but is required by the Sparc driver.
-        */
-       if (dev->driver->kernel_context_switch_unlock)
-               dev->driver->kernel_context_switch_unlock(dev);
-       else {
-               if (drm_lock_free(&master->lock, lock->context)) {
-                       /* FIXME: Should really bail out here. */
-               }
-       }
-
        unblock_all_signals();
        return 0;
 }
@@ -191,6 +174,7 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
  *
  * Attempt to mark the lock as held by the given context, via the \p cmpxchg instruction.
  */
+static
 int drm_lock_take(struct drm_lock_data *lock_data,
                  unsigned int context)
 {
@@ -227,7 +211,6 @@ int drm_lock_take(struct drm_lock_data *lock_data,
        }
        return 0;
 }
-EXPORT_SYMBOL(drm_lock_take);
 
 /**
  * This takes a lock forcibly and hands it to context. Should ONLY be used
@@ -295,7 +278,6 @@ int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context)
        wake_up_interruptible(&lock_data->lock_queue);
        return 0;
 }
-EXPORT_SYMBOL(drm_lock_free);
 
 /**
  * If we get here, it means that the process has called DRM_IOCTL_LOCK
@@ -358,7 +340,6 @@ void drm_idlelock_take(struct drm_lock_data *lock_data)
        }
        spin_unlock_bh(&lock_data->spinlock);
 }
-EXPORT_SYMBOL(drm_idlelock_take);
 
 void drm_idlelock_release(struct drm_lock_data *lock_data)
 {
@@ -378,8 +359,6 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
        }
        spin_unlock_bh(&lock_data->spinlock);
 }
-EXPORT_SYMBOL(drm_idlelock_release);
-
 
 int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv)
 {
@@ -388,5 +367,3 @@ int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv)
                _DRM_LOCK_IS_HELD(master->lock.hw_lock->lock) &&
                master->lock.file_priv == file_priv);
 }
-
-EXPORT_SYMBOL(drm_i_have_hw_lock);