[PATCH] connector: hide unused procfs helpers

[YueHaibing]

When CONFIG_PROC_FS isn't set, gcc warning this:

drivers/connector/connector.c:242:12: warning: âcn_proc_showâ defined but not used [-Wunused-function]
 static int cn_proc_show(struct seq_file *m, void *v)
            ^
fix this by adding #ifdef around it.

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/connector/connector.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index e718b8c..e2636d4 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -239,6 +239,7 @@ void cn_del_callback(struct cb_id *id)
 }
 EXPORT_SYMBOL_GPL(cn_del_callback);
 
+#ifdef CONFIG_PROC_FS
 static int cn_proc_show(struct seq_file *m, void *v)
 {
 	struct cn_queue_dev *dev = cdev.cbdev;
@@ -259,6 +260,7 @@ static int cn_proc_show(struct seq_file *m, void *v)
 
 	return 0;
 }
+#endif
 
 static struct cn_dev cdev = {
 	.input   = cn_rx_skb,
-- 
2.7.0