drm/exynos/ipp: simplify property list allocation

prop_list is always allocated, so instead of allocating it dynamically
the pointer can be replaced by the structure itself.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_fimc.c

@@ -1342,11 +1342,7 @@ static irqreturn_t fimc_irq_handler(int irq, void *dev_id)
 
 static int fimc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 {
-	struct drm_exynos_ipp_prop_list *prop_list;
-
-	prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL);
-	if (!prop_list)
-		return -ENOMEM;
+	struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
 
 	prop_list->version = 1;
 	prop_list->writeback = 1;
@@ -1371,8 +1367,6 @@ static int fimc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 	prop_list->scale_min.hsize = FIMC_SCALE_MIN;
 	prop_list->scale_min.vsize = FIMC_SCALE_MIN;
 
-	ippdrv->prop_list = prop_list;
-
 	return 0;
 }
 
@@ -1395,7 +1389,7 @@ static int fimc_ippdrv_check_property(struct device *dev,
 {
 	struct fimc_context *ctx = get_fimc_context(dev);
 	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
-	struct drm_exynos_ipp_prop_list *pp = ippdrv->prop_list;
+	struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
 	struct drm_exynos_ipp_config *config;
 	struct drm_exynos_pos *pos;
 	struct drm_exynos_sz *sz;

drivers/gpu/drm/exynos/exynos_drm_gsc.c

@@ -1335,11 +1335,7 @@ static irqreturn_t gsc_irq_handler(int irq, void *dev_id)
 
 static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 {
-	struct drm_exynos_ipp_prop_list *prop_list;
-
-	prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL);
-	if (!prop_list)
-		return -ENOMEM;
+	struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
 
 	prop_list->version = 1;
 	prop_list->writeback = 1;
@@ -1363,8 +1359,6 @@ static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 	prop_list->scale_min.hsize = GSC_SCALE_MIN;
 	prop_list->scale_min.vsize = GSC_SCALE_MIN;
 
-	ippdrv->prop_list = prop_list;
-
 	return 0;
 }
 
@@ -1387,7 +1381,7 @@ static int gsc_ippdrv_check_property(struct device *dev,
 {
 	struct gsc_context *ctx = get_gsc_context(dev);
 	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
-	struct drm_exynos_ipp_prop_list *pp = ippdrv->prop_list;
+	struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
 	struct drm_exynos_ipp_config *config;
 	struct drm_exynos_pos *pos;
 	struct drm_exynos_sz *sz;

drivers/gpu/drm/exynos/exynos_drm_ipp.c

@@ -346,7 +346,7 @@ int exynos_drm_ipp_get_property(struct drm_device *drm_dev, void *data,
 			return PTR_ERR(ippdrv);
 		}
 
-		*prop_list = *ippdrv->prop_list;
+		*prop_list = ippdrv->prop_list;
 	}
 
 	return 0;
@@ -1713,7 +1713,7 @@ static int ipp_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
 		DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]ipp_id[%d]\n",
 			count++, (int)ippdrv, ipp_id);
 
-		ippdrv->prop_list->ipp_id = ipp_id;
+		ippdrv->prop_list.ipp_id = ipp_id;
 
 		/* store parent device for node */
 		ippdrv->parent_dev = dev;

drivers/gpu/drm/exynos/exynos_drm_ipp.h

@@ -165,7 +165,7 @@ struct exynos_drm_ippdrv {
 	struct workqueue_struct	*event_workq;
 	struct drm_exynos_ipp_cmd_node *c_node;
 	struct list_head	cmd_list;
-	struct drm_exynos_ipp_prop_list *prop_list;
+	struct drm_exynos_ipp_prop_list prop_list;
 
 	int (*check_property)(struct device *dev,
 		struct drm_exynos_ipp_property *property);

drivers/gpu/drm/exynos/exynos_drm_rotator.c

@@ -470,11 +470,7 @@ static struct exynos_drm_ipp_ops rot_dst_ops = {
 
 static int rotator_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 {
-	struct drm_exynos_ipp_prop_list *prop_list;
-
-	prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL);
-	if (!prop_list)
-		return -ENOMEM;
+	struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
 
 	prop_list->version = 1;
 	prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) |
@@ -487,8 +483,6 @@ static int rotator_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
 	prop_list->crop = 0;
 	prop_list->scale = 0;
 
-	ippdrv->prop_list = prop_list;
-
 	return 0;
 }