diff --git a/drivers/power/bq27510_battery.c b/drivers/power/bq27510_battery.c
index d8d3ef198618..e53beee6efd4 100755
--- a/drivers/power/bq27510_battery.c
+++ b/drivers/power/bq27510_battery.c
@@ -91,7 +91,7 @@ static enum power_supply_property rk29_ac_props[] = {
 };
 
 static ssize_t battery_proc_write(struct file *file,const char __user *buffer,
-			 unsigned long count,void *data)
+			 size_t count, loff_t *ppos)
 {
 	char c;
 	int rc;