diff --git a/drivers/staging/fsl-mc/include/mc-sys.h b/drivers/staging/fsl-mc/include/mc-sys.h
index d4fb60289df7..7d44d8ceef9f 100644
--- a/drivers/staging/fsl-mc/include/mc-sys.h
+++ b/drivers/staging/fsl-mc/include/mc-sys.h
@@ -54,8 +54,8 @@ struct mc_command;
  */
 struct fsl_mc_io {
 	struct device *dev;
-	u32 flags;
-	u32 portal_size;
+	u16 flags;
+	u16 portal_size;
 	phys_addr_t portal_phys_addr;
 	void __iomem *portal_virt_addr;
 	struct fsl_mc_device *dpmcp_dev;