[PATCH 11/23] drm/via: clean up reclaim_buffers

[Daniel Vetter]

A few things
- kill reclaim_buffers, it's never ever called because via does not set
  DRIVER_HAVE_DMA
- inline the idlelock dance into the buffer reclaim logic and make it
  a simple preclose cleanup function
- directly call the the dma_quiescent function and kill the needless
  if check.

Export the idlelock drm functions so that drivers can call them.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/drm_lock.c    |    2 ++
 drivers/gpu/drm/via/via_drv.c |    4 +---
 drivers/gpu/drm/via/via_mm.c  |   11 +++++++++--
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index 632ae24..b107e1d 100644
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -345,6 +345,7 @@ 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)
 {
@@ -364,6 +365,7 @@ 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)
 {
diff --git a/drivers/gpu/drm/via/via_drv.c b/drivers/gpu/drm/via/via_drv.c
index 472adcf..f50431c 100644
--- a/drivers/gpu/drm/via/via_drv.c
+++ b/drivers/gpu/drm/via/via_drv.c
@@ -62,6 +62,7 @@ static struct drm_driver driver = {
 	.load = via_driver_load,
 	.unload = via_driver_unload,
 	.open = via_driver_open,
+	.preclose = via_reclaim_buffers_locked,
 	.postclose = via_driver_postclose,
 	.context_dtor = via_final_context,
 	.get_vblank_counter = via_get_vblank_counter,
@@ -72,9 +73,6 @@ static struct drm_driver driver = {
 	.irq_uninstall = via_driver_irq_uninstall,
 	.irq_handler = via_driver_irq_handler,
 	.dma_quiescent = via_driver_dma_quiescent,
-	.reclaim_buffers = drm_core_reclaim_buffers,
-	.reclaim_buffers_locked = NULL,
-	.reclaim_buffers_idlelocked = via_reclaim_buffers_locked,
 	.lastclose = via_lastclose,
 	.ioctls = via_ioctls,
 	.fops = {
diff --git a/drivers/gpu/drm/via/via_mm.c b/drivers/gpu/drm/via/via_mm.c
index 80eab7d..8ce95c5 100644
--- a/drivers/gpu/drm/via/via_mm.c
+++ b/drivers/gpu/drm/via/via_mm.c
@@ -217,6 +217,10 @@ void via_reclaim_buffers_locked(struct drm_device *dev,
 {
 	struct via_file_private *file_priv = file->driver_priv;
 	struct via_memblock *entry, *next;
+	int release_idlelock = 0;
+
+	if (file->master && file->master->lock.hw_lock)
+		drm_idlelock_take(&file->master->lock);
 
 	mutex_lock(&dev->struct_mutex);
 	if (list_empty(&file_priv->obj_list)) {
@@ -224,8 +228,7 @@ void via_reclaim_buffers_locked(struct drm_device *dev,
 		return;
 	}
 
-	if (dev->driver->dma_quiescent)
-		dev->driver->dma_quiescent(dev);
+	via_driver_dma_quiescent(dev);
 
 	list_for_each_entry_safe(entry, next, &file_priv->obj_list,
 				 owner_list) {
@@ -234,5 +237,9 @@ void via_reclaim_buffers_locked(struct drm_device *dev,
 		kfree(entry);
 	}
 	mutex_unlock(&dev->struct_mutex);
+
+	if (release_idlelock)
+		drm_idlelock_release(&file->master->lock);
+
 	return;
 }
-- 
1.7.7.1