Index: uspace/drv/char/ps2mouse/main.c
===================================================================
--- uspace/drv/char/ps2mouse/main.c	(revision 267f235883f3e79a143af641ea5e7f01fdfd0510)
+++ uspace/drv/char/ps2mouse/main.c	(revision db71e2af5cdfe169de296e6f39b3e5eda7a966f6)
@@ -80,20 +80,21 @@
 static int mouse_add(ddf_dev_t *device)
 {
+	int rc;
+
 	if (!device)
 		return EINVAL;
 
-#define CHECK_RET_RETURN(ret, message...) \
-if (ret != EOK) { \
-	ddf_msg(LVL_ERROR, message); \
-	return ret; \
-} else (void)0
+	ps2_mouse_t *mouse = ddf_dev_data_alloc(device, sizeof(ps2_mouse_t));
+	if (mouse == NULL) {
+		ddf_msg(LVL_ERROR, "Failed to allocate mouse driver instance.");
+		return ENOMEM;
+	}
 
-	ps2_mouse_t *mouse = ddf_dev_data_alloc(device, sizeof(ps2_mouse_t));
-	int ret = (mouse == NULL) ? ENOMEM : EOK;
-	CHECK_RET_RETURN(ret, "Failed to allocate mouse driver instance.");
-
-	ret = ps2_mouse_init(mouse, device);
-	CHECK_RET_RETURN(ret,
-	    "Failed to initialize mouse driver: %s.", str_error(ret));
+	rc = ps2_mouse_init(mouse, device);
+	if (rc != EOK) {
+		ddf_msg(LVL_ERROR, "Failed to initialize mouse driver: %s.",
+		    str_error(rc));
+		return rc;
+	}
 
 	ddf_msg(LVL_NOTE, "Controlling '%s' (%" PRIun ").",