diff options
| author | Julien Brunel <brunel@diku.dk> | 2008-10-10 12:00:19 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-10-10 12:00:19 -0700 |
| commit | 6aea938f54ca785ce3bea67a8948698225c6ca58 (patch) | |
| tree | 0073e089b5c10a5baf116f4978480259c366ec89 /drivers/infiniband/core | |
| parent | f6bccf695431da0e9bd773550ae91b8cb9ffb227 (diff) | |
| download | linux-6aea938f54ca785ce3bea67a8948698225c6ca58.tar.gz | |
RDMA/ucma: Test ucma_alloc_multicast() return against NULL, not with IS_ERR()
In case of error, the function ucma_alloc_multicast() returns a NULL pointer, but never returns an ERR pointer. So after a call to this function, an IS_ERR test should be replaced by a NULL test. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @match bad_is_err_test@ expression x, E; @@ x = ucma_alloc_multicast(...) ... when != x = E IS_ERR(x) // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 3ddacf39b7ba..4346a24568fb 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -904,8 +904,8 @@ static ssize_t ucma_join_multicast(struct ucma_file *file, mutex_lock(&file->mut); mc = ucma_alloc_multicast(ctx); - if (IS_ERR(mc)) { - ret = PTR_ERR(mc); + if (!mc) { + ret = -ENOMEM; goto err1; } |