[NET]: Add a dev_ioctl() fallback to sock_ioctl()

Currently all network protocols need to call dev_ioctl as the default
fallback in their ioctl implementations.  This patch adds a fallback
to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
This way all the procotol ioctl handlers can be simplified and we don't
need to export dev_ioctl.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 9ee672e19ec1..63b0e4afeb33 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1215,7 +1215,7 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 return nr_rt_ioctl(cmd, argp);
 
         default:
-                return dev_ioctl(cmd, argp);
+                return -ENOIOCTLCMD;
         }
 
         return 0;