drm: omapdrm: Use sizeof(*var) instead of sizeof(type) for structures

By linking the sizeof to a variable type the code will be less prone to
bugs due to future type changes of variables.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c

@@ -1253,7 +1253,7 @@ static int dsicm_probe(struct platform_device *pdev)
 	dsicm_hw_reset(ddata);
 
 	if (ddata->use_dsi_backlight) {
-		memset(&props, 0, sizeof(struct backlight_properties));
+		memset(&props, 0, sizeof(props));
 		props.max_brightness = 255;
 
 		props.type = BACKLIGHT_RAW;

drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c

@@ -119,8 +119,7 @@ static void __init omapdss_omapify_node(struct device_node *node)
 
 static void __init omapdss_add_to_list(struct device_node *node, bool root)
 {
-	struct dss_conv_node *n = kmalloc(sizeof(struct dss_conv_node),
-		GFP_KERNEL);
+	struct dss_conv_node *n = kmalloc(sizeof(*n), GFP_KERNEL);
 	if (n) {
 		n->node = node;
 		n->root = root;

drivers/gpu/drm/omapdrm/omap_connector.c

@@ -162,7 +162,7 @@ static int omap_connector_mode_valid(struct drm_connector *connector,
 
 		dssdrv->get_timings(dssdev, &t);
 
-		if (memcmp(&vm, &t, sizeof(struct videomode)))
+		if (memcmp(&vm, &t, sizeof(vm)))
 			r = -EINVAL;
 		else
 			r = 0;
@@ -217,7 +217,7 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
 
 	omap_dss_get_device(dssdev);
 
-	omap_connector = kzalloc(sizeof(struct omap_connector), GFP_KERNEL);
+	omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
 	if (!omap_connector)
 		goto fail;
 

drivers/gpu/drm/omapdrm/omap_dmm_tiler.c

@@ -224,7 +224,7 @@ static void dmm_txn_append(struct dmm_txn *txn, struct pat_area *area,
 	int rows = (1 + area->y1 - area->y0);
 	int i = columns*rows;
 
-	pat = alloc_dma(txn, sizeof(struct pat), &pat_pa);
+	pat = alloc_dma(txn, sizeof(*pat), &pat_pa);
 
 	if (txn->last_pat)
 		txn->last_pat->next_pa = (uint32_t)pat_pa;
@@ -735,7 +735,7 @@ static int omap_dmm_probe(struct platform_device *dev)
 
 	/* alloc engines */
 	omap_dmm->engines = kcalloc(omap_dmm->num_engines,
-				    sizeof(struct refill_engine), GFP_KERNEL);
+				    sizeof(*omap_dmm->engines), GFP_KERNEL);
 	if (!omap_dmm->engines) {
 		ret = -ENOMEM;
 		goto fail;

drivers/gpu/drm/omapdrm/omap_encoder.c

@@ -117,7 +117,7 @@ static int omap_encoder_update(struct drm_encoder *encoder,
 
 		dssdrv->get_timings(dssdev, &t);
 
-		if (memcmp(vm, &t, sizeof(struct videomode)))
+		if (memcmp(vm, &t, sizeof(*vm)))
 			ret = -EINVAL;
 		else
 			ret = 0;