[patch v5 06/12] IPVS: ip_vs_{un,}bind_scheduler NULL arguments

[Simon Horman <horms@xxxxxxxxxxxx>]

In general NULL arguments aren't passed by the few callers that exist,
so don't test for them.

The exception is to make passing NULL to ip_vs_unbind_scheduler() a noop.

Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
Acked-by: Julian Anastasov <ja@xxxxxx>

--- 

v2
* Trivial rediff

v3
* Trivial rediff

Index: lvs-test-2.6/net/netfilter/ipvs/ip_vs_ctl.c
===================================================================
--- lvs-test-2.6.orig/net/netfilter/ipvs/ip_vs_ctl.c    2010-10-02 
10:15:45.000000000 +0900
+++ lvs-test-2.6/net/netfilter/ipvs/ip_vs_ctl.c 2010-10-02 10:15:47.000000000 
+0900
@@ -1206,8 +1206,7 @@ ip_vs_add_service(struct ip_vs_service_u
 
  out_err:
        if (svc != NULL) {
-               if (svc->scheduler)
-                       ip_vs_unbind_scheduler(svc);
+               ip_vs_unbind_scheduler(svc);
                if (svc->inc) {
                        local_bh_disable();
                        ip_vs_app_inc_put(svc->inc);
Index: lvs-test-2.6/net/netfilter/ipvs/ip_vs_sched.c
===================================================================
--- lvs-test-2.6.orig/net/netfilter/ipvs/ip_vs_sched.c  2010-10-02 
10:15:45.000000000 +0900
+++ lvs-test-2.6/net/netfilter/ipvs/ip_vs_sched.c       2010-10-02 
10:15:47.000000000 +0900
@@ -46,15 +46,6 @@ int ip_vs_bind_scheduler(struct ip_vs_se
 {
        int ret;
 
-       if (svc == NULL) {
-               pr_err("%s(): svc arg NULL\n", __func__);
-               return -EINVAL;
-       }
-       if (scheduler == NULL) {
-               pr_err("%s(): scheduler arg NULL\n", __func__);
-               return -EINVAL;
-       }
-
        svc->scheduler = scheduler;
 
        if (scheduler->init_service) {
@@ -74,18 +65,10 @@ int ip_vs_bind_scheduler(struct ip_vs_se
  */
 int ip_vs_unbind_scheduler(struct ip_vs_service *svc)
 {
-       struct ip_vs_scheduler *sched;
+       struct ip_vs_scheduler *sched = svc->scheduler;
 
-       if (svc == NULL) {
-               pr_err("%s(): svc arg NULL\n", __func__);
-               return -EINVAL;
-       }
-
-       sched = svc->scheduler;
-       if (sched == NULL) {
-               pr_err("%s(): svc isn't bound\n", __func__);
-               return -EINVAL;
-       }
+       if (!sched)
+               return 0;
 
        if (sched->done_service) {
                if (sched->done_service(svc) != 0) {

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