[S390] Get rid of a lot of sparse warnings.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
index e965f03..76728ae 100644
--- a/drivers/s390/net/cu3088.c
+++ b/drivers/s390/net/cu3088.c
@@ -57,7 +57,7 @@
static struct ccw_driver cu3088_driver;
-struct device *cu3088_root_dev;
+static struct device *cu3088_root_dev;
static ssize_t
group_write(struct device_driver *drv, const char *buf, size_t count)