1 files changed, 14 insertions, 6 deletions

diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c
index c65c90ad626a..1e05a2d723f4 100644
--- a/net/sunrpc/sysfs.c
+++ b/net/sunrpc/sysfs.c
@@ -31,7 +31,7 @@ static void rpc_sysfs_object_release(struct kobject *kobj)
 }
 
 static const struct kobj_ns_type_operations *
-rpc_sysfs_object_child_ns_type(struct kobject *kobj)
+rpc_sysfs_object_child_ns_type(const struct kobject *kobj)
 {
 	return &net_ns_type_operations;
 }
@@ -381,17 +381,17 @@ static void rpc_sysfs_xprt_release(struct kobject *kobj)
 	kfree(xprt);
 }
 
-static const void *rpc_sysfs_client_namespace(struct kobject *kobj)
+static const void *rpc_sysfs_client_namespace(const struct kobject *kobj)
 {
 	return container_of(kobj, struct rpc_sysfs_client, kobject)->net;
 }
 
-static const void *rpc_sysfs_xprt_switch_namespace(struct kobject *kobj)
+static const void *rpc_sysfs_xprt_switch_namespace(const struct kobject *kobj)
 {
 	return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net;
 }
 
-static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj)
+static const void *rpc_sysfs_xprt_namespace(const struct kobject *kobj)
 {
 	return container_of(kobj, struct rpc_sysfs_xprt,
 			    kobject)->xprt->xprt_net;
@@ -518,13 +518,16 @@ void rpc_sysfs_client_setup(struct rpc_clnt *clnt,
 			    struct net *net)
 {
 	struct rpc_sysfs_client *rpc_client;
+	struct rpc_sysfs_xprt_switch *xswitch =
+		(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
+
+	if (!xswitch)
+		return;
 
 	rpc_client = rpc_sysfs_client_alloc(rpc_sunrpc_client_kobj,
 					    net, clnt->cl_clid);
 	if (rpc_client) {
 		char name[] = "switch";
-		struct rpc_sysfs_xprt_switch *xswitch =
-			(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
 		int ret;
 
 		clnt->cl_sysfs = rpc_client;
@@ -558,6 +561,8 @@ void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
 		rpc_xprt_switch->xprt_switch = xprt_switch;
 		rpc_xprt_switch->xprt = xprt;
 		kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_ADD);
+	} else {
+		xprt_switch->xps_sysfs = NULL;
 	}
 }
 
@@ -569,6 +574,9 @@ void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch,
 	struct rpc_sysfs_xprt_switch *switch_obj =
 		(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
 
+	if (!switch_obj)
+		return;
+
 	rpc_xprt = rpc_sysfs_xprt_alloc(&switch_obj->kobject, xprt, gfp_flags);
 	if (rpc_xprt) {
 		xprt->xprt_sysfs = rpc_xprt;