drm: hide legacy sg cleanup better from common code

I've decided that some clear markers for what's legacy dri1/non-gem
code is useful. I've opted to use the drm_legacy prefix and then hide
all the checks in that function for better readability in the common
code.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 11 insertions, 7 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index dddd79988ffc..743b24d7918e 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -197,11 +197,7 @@ int drm_lastclose(struct drm_device * dev)
 
         drm_agp_clear(dev);
 
-        if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
-            !drm_core_check_feature(dev, DRIVER_MODESET)) {
-                drm_sg_cleanup(dev->sg);
-                dev->sg = NULL;
-        }
+        drm_legacy_sg_cleanup(dev);
 
         /* Clear vma list (only built for debugging) */
         list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
diff --git a/drivers/gpu/drm/drm_scatter.c b/drivers/gpu/drm/drm_scatter.c
index a4a076ff1757..dd8a6480065c 100644
--- a/drivers/gpu/drm/drm_scatter.c
+++ b/drivers/gpu/drm/drm_scatter.c
@@ -46,7 +46,7 @@ static inline void *drm_vmalloc_dma(unsigned long size)
 #endif
 }
 
-void drm_sg_cleanup(struct drm_sg_mem * entry)
+static void drm_sg_cleanup(struct drm_sg_mem * entry)
 {
         struct page *page;
         int i;
@@ -64,6 +64,14 @@ void drm_sg_cleanup(struct drm_sg_mem * entry)
         kfree(entry);
 }
 
+void drm_legacy_sg_cleanup(struct drm_device *dev)
+{
+        if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
+            !drm_core_check_feature(dev, DRIVER_MODESET)) {
+                drm_sg_cleanup(dev->sg);
+                dev->sg = NULL;
+        }
+}
 #ifdef _LP64
 # define ScatterHandle(x) (unsigned int)((x >> 32) + (x & ((1L << 32) - 1)))
 #else
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 813ca1d11728..10d9f83a9df0 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1522,7 +1522,7 @@ extern int drm_vma_info(struct seq_file *m, void *data);
 #endif
 
                                 /* Scatter Gather Support (drm_scatter.h) */
-extern void drm_sg_cleanup(struct drm_sg_mem * entry);
+extern void drm_legacy_sg_cleanup(struct drm_device *dev);
 extern int drm_sg_alloc(struct drm_device *dev, void *data,
                         struct drm_file *file_priv);
 extern int drm_sg_free(struct drm_device *dev, void *data,