From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Date: Fri, 12 May 2017 10:59:52 +0000 (+0200)
Subject: staging: most: check availability of the callback request_netinfo
X-Git-Tag: v4.13-rc1~184^2~349
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a4d98fac51f321bc42bc64dd8584f67f751d69f6;p=karo-tx-linux.git

staging: most: check availability of the callback request_netinfo

Since not all HDMs implement the callback request_netinfo, this patch
adds checking of its availability.

Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/most/aim-network/networking.c b/drivers/staging/most/aim-network/networking.c
index 5822902ecb4a..03ddbd2459d6 100644
--- a/drivers/staging/most/aim-network/networking.c
+++ b/drivers/staging/most/aim-network/networking.c
@@ -203,7 +203,8 @@ static int most_nd_open(struct net_device *dev)
 	else
 		netif_dormant_on(dev);
 	netif_wake_queue(dev);
-	nd->iface->request_netinfo(nd->iface, nd->tx.ch_id);
+	if (nd->iface->request_netinfo)
+		nd->iface->request_netinfo(nd->iface, nd->tx.ch_id);
 	return 0;
 }