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| author | Ying Xue <ying.xue@windriver.com> | 2014-01-15 10:23:44 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-14 18:50:47 -0800 |
| commit | 5af28de35342f630a91061e25cc976a01b7ca6c4 (patch) | |
| tree | 6601cac6792af4d03ff3913f16fc73ecdbaa8c29 /net/can/gw.c | |
| parent | a74e9426948cce451af0433c69a120178948cb03 (diff) | |
| download | linux-5af28de35342f630a91061e25cc976a01b7ca6c4.tar.gz linux-5af28de35342f630a91061e25cc976a01b7ca6c4.tar.bz2 linux-5af28de35342f630a91061e25cc976a01b7ca6c4.zip | |
can: use __dev_get_by_index instead of dev_get_by_index to find interface
As cgw_create_job() is always under rtnl_lock protection,
__dev_get_by_index() instead of dev_get_by_index() should be used to
find interface handler in it having us avoid to change interface
reference counter.
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can/gw.c')
| -rw-r--r-- | net/can/gw.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/net/can/gw.c b/net/can/gw.c index 88c8a39c173d..ac31891967da 100644 --- a/net/can/gw.c +++ b/net/can/gw.c @@ -839,21 +839,21 @@ static int cgw_create_job(struct sk_buff *skb, struct nlmsghdr *nlh) if (!gwj->ccgw.src_idx || !gwj->ccgw.dst_idx) goto out; - gwj->src.dev = dev_get_by_index(&init_net, gwj->ccgw.src_idx); + gwj->src.dev = __dev_get_by_index(&init_net, gwj->ccgw.src_idx); if (!gwj->src.dev) goto out; if (gwj->src.dev->type != ARPHRD_CAN) - goto put_src_out; + goto out; - gwj->dst.dev = dev_get_by_index(&init_net, gwj->ccgw.dst_idx); + gwj->dst.dev = __dev_get_by_index(&init_net, gwj->ccgw.dst_idx); if (!gwj->dst.dev) - goto put_src_out; + goto out; if (gwj->dst.dev->type != ARPHRD_CAN) - goto put_src_dst_out; + goto out; gwj->limit_hops = limhops; @@ -862,11 +862,6 @@ static int cgw_create_job(struct sk_buff *skb, struct nlmsghdr *nlh) err = cgw_register_filter(gwj); if (!err) hlist_add_head_rcu(&gwj->list, &cgw_list); - -put_src_dst_out: - dev_put(gwj->dst.dev); -put_src_out: - dev_put(gwj->src.dev); out: if (err) kmem_cache_free(cgw_cache, gwj); |