diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c
index 1a11b9131556..fd8252dce4a2 100644
--- a/drivers/spi/spi-bcm2835aux.c
+++ b/drivers/spi/spi-bcm2835aux.c
@@ -38,7 +38,7 @@
 #include <linux/spinlock.h>
 
 /* define polling limits */
-unsigned int polling_limit_us = 30;
+static unsigned int polling_limit_us = 30;
 module_param(polling_limit_us, uint, 0664);
 MODULE_PARM_DESC(polling_limit_us,
 		 "time in us to run a transfer in polling mode - if zero no polling is used\n");