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IB/uverbs: Release event file reference on ib_uverbs_create_cq() error

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ib_uverbs_create_cq() should release the completion channel event file
if an error occurs after it looks it up.  Also, if userspace asks for
a completion channel and we don't find it, an error should be returned
instead of silently creating a CQ without a completion channel.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Jack Morgenstein 2006-01-06 16:43:14 -08:00 committed by Roland Dreier
parent ea5d4a6ad2
commit ac4e7b3557
1 changed files with 10 additions and 3 deletions
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13
drivers/infiniband/core/uverbs_cmd.c
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@ -594,13 +594,18 @@ ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
if (cmd.comp_vector >= file->device->num_comp_vectors)
return -EINVAL;
if (cmd.comp_channel >= 0)
ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
if (!uobj)
return -ENOMEM;
if (cmd.comp_channel >= 0) {
ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
if (!ev_file) {
ret = -EINVAL;
goto err;
}
}
uobj->uobject.user_handle = cmd.user_handle;
uobj->uobject.context = file->ucontext;
uobj->uverbs_file = file;
@ -664,6 +669,8 @@ ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
ib_destroy_cq(cq);
err:
if (ev_file)
ib_uverbs_release_ucq(file, ev_file, uobj);
kfree(uobj);
return ret;
}