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| author | Julien Brunel <brunel@diku.dk> | 2008-09-02 17:24:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-09-02 17:24:28 -0700 |
| commit | 9d7d74029e0f5fde3b88b39892b9b9cfdf4ea10a (patch) | |
| tree | a079c58127d8aae4977c0650e5327859e93e22e9 | |
| parent | 773b4e02be28220e9ead80a5fdb180031361439a (diff) | |
| download | linux-9d7d74029e0f5fde3b88b39892b9b9cfdf4ea10a.tar.gz linux-9d7d74029e0f5fde3b88b39892b9b9cfdf4ea10a.tar.bz2 linux-9d7d74029e0f5fde3b88b39892b9b9cfdf4ea10a.zip | |
net/xfrm: Use an IS_ERR test rather than a NULL test
In case of error, the function xfrm_bundle_create returns an ERR
pointer, but never returns a NULL pointer. So a NULL test that comes
after an IS_ERR test should be deleted.
The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@match_bad_null_test@
expression x, E;
statement S1,S2;
@@
x = xfrm_bundle_create(...)
... when != x = E
* if (x != NULL)
S1 else S2
// </smpl>
Signed-off-by: Julien Brunel <brunel@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 841b32a2e680..46914b79d850 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1731,8 +1731,7 @@ restart: * We can't enlist stable bundles either. */ write_unlock_bh(&policy->lock); - if (dst) - dst_free(dst); + dst_free(dst); if (pol_dead) XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLDEAD); @@ -1748,8 +1747,7 @@ restart: err = xfrm_dst_update_origin(dst, fl); if (unlikely(err)) { write_unlock_bh(&policy->lock); - if (dst) - dst_free(dst); + dst_free(dst); XFRM_INC_STATS(LINUX_MIB_XFRMOUTBUNDLECHECKERROR); goto error; } |