1 files changed, 33 insertions, 9 deletions

diff --git a/drivers/staging/omapdrm/omap_gem.c b/drivers/staging/omapdrm/omap_gem.c
index c38992b..518d03d 100644
--- a/drivers/staging/omapdrm/omap_gem.c
+++ b/drivers/staging/omapdrm/omap_gem.c
@@ -964,6 +964,34 @@ void *omap_gem_vaddr(struct drm_gem_object *obj)
 	return omap_obj->vaddr;
 }
 
+#ifdef CONFIG_PM
+/* re-pin objects in DMM in resume path: */
+int omap_gem_resume(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct omap_drm_private *priv = drm_dev->dev_private;
+	struct omap_gem_object *omap_obj;
+	int ret = 0;
+
+	list_for_each_entry(omap_obj, &priv->obj_list, mm_list) {
+		if (omap_obj->block) {
+			struct drm_gem_object *obj = &omap_obj->base;
+			uint32_t npages = obj->size >> PAGE_SHIFT;
+			WARN_ON(!omap_obj->pages);  /* this can't happen */
+			ret = tiler_pin(omap_obj->block,
+					omap_obj->pages, npages,
+					omap_obj->roll, true);
+			if (ret) {
+				dev_err(dev, "could not repin: %d\n", ret);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_DEBUG_FS
 void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 {
@@ -1239,12 +1267,12 @@ int omap_gem_set_sync_object(struct drm_gem_object *obj, void *syncobj)
 
 	if ((omap_obj->flags & OMAP_BO_EXT_SYNC) && !syncobj) {
 		/* clearing a previously set syncobj */
-		syncobj = kzalloc(sizeof(*omap_obj->sync), GFP_ATOMIC);
+		syncobj = kmemdup(omap_obj->sync, sizeof(*omap_obj->sync),
+				  GFP_ATOMIC);
 		if (!syncobj) {
 			ret = -ENOMEM;
 			goto unlock;
 		}
-		memcpy(syncobj, omap_obj->sync, sizeof(*omap_obj->sync));
 		omap_obj->flags &= ~OMAP_BO_EXT_SYNC;
 		omap_obj->sync = syncobj;
 	} else if (syncobj && !(omap_obj->flags & OMAP_BO_EXT_SYNC)) {
@@ -1374,10 +1402,8 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
 	}
 
 	omap_obj = kzalloc(sizeof(*omap_obj), GFP_KERNEL);
-	if (!omap_obj) {
-		dev_err(dev->dev, "could not allocate GEM object\n");
+	if (!omap_obj)
 		goto fail;
-	}
 
 	list_add(&omap_obj->mm_list, &priv->obj_list);
 
@@ -1433,11 +1459,9 @@ void omap_gem_init(struct drm_device *dev)
 		return;
 	}
 
-	usergart = kzalloc(3 * sizeof(*usergart), GFP_KERNEL);
-	if (!usergart) {
-		dev_warn(dev->dev, "could not allocate usergart\n");
+	usergart = kcalloc(3, sizeof(*usergart), GFP_KERNEL);
+	if (!usergart)
 		return;
-	}
 
 	/* reserve 4k aligned/wide regions for userspace mappings: */
 	for (i = 0; i < ARRAY_SIZE(fmts); i++) {