diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index 9b227e39299af9bd4e51887c974c276eecb9fb30..4e1fc61b9d95201c5bfd119cd8be8f6e9b8db6ba 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -23,17 +23,17 @@
 /******************************************************************************
  * PCI block
  *****************************************************************************/
-struct ci13xxx_platform_data pci_platdata = {
+static struct ci13xxx_platform_data pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= DEF_CAPOFFSET,
 };
 
-struct ci13xxx_platform_data langwell_pci_platdata = {
+static struct ci13xxx_platform_data langwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 };
 
-struct ci13xxx_platform_data penwell_pci_platdata = {
+static struct ci13xxx_platform_data penwell_pci_platdata = {
 	.name		= UDC_DRIVER_NAME,
 	.capoffset	= 0,
 	.power_budget	= 200,