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| author |   Minwoo Im <minwoo.im.dev@gmail.com> | 2019-04-07 15:28:06 +0900 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2019-04-25 16:41:26 +0200 |
| commit | 6b7e631b927ca1266b2695307ab71ed7764af75e (patch) | |
| tree | b49449c54db621a11616b55ca66839a6afeb3988 | |
| parent | nvmet: rename nvme_completion instances from rsp to cqe (diff) | |
| download | linux-dev-6b7e631b927ca1266b2695307ab71ed7764af75e.tar.xz linux-dev-6b7e631b927ca1266b2695307ab71ed7764af75e.zip | |
nvmet: return a specified error it subsys_alloc fails
nvmet_subsys_alloc() returns its pointer or NULL if it fails. We can
see three different steps in this function:
1. memory allocation
2. argument check
3. memory allocation for string
But now the callers of this function do not seem to handle case 2 by
returning -ENOMEM only even if it fails with an invalid parameter.
This patch specifies error codes so that caller can pass it to its own
caller.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/target/configfs.c | 4 | ||||
| -rw-r--r-- | drivers/nvme/target/core.c | 6 | ||||
| -rw-r--r-- | drivers/nvme/target/discovery.c | 4 |
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index adb79545cdd7..08dd5af357f7 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -898,8 +898,8 @@ static struct config_group *nvmet_subsys_make(struct config_group *group, } subsys = nvmet_subsys_alloc(name, NVME_NQN_NVME); - if (!subsys) - return ERR_PTR(-ENOMEM); + if (IS_ERR(subsys)) + return ERR_CAST(subsys); config_group_init_type_name(&subsys->group, name, &nvmet_subsys_type); diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 1c1776c3e316..24e0a36392d9 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -1367,7 +1367,7 @@ struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn, subsys = kzalloc(sizeof(*subsys), GFP_KERNEL); if (!subsys) - return NULL; + return ERR_PTR(-ENOMEM); subsys->ver = NVME_VS(1, 3, 0); /* NVMe 1.3.0 */ /* generate a random serial number as our controllers are ephemeral: */ @@ -1383,14 +1383,14 @@ struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn, default: pr_err("%s: Unknown Subsystem type - %d\n", __func__, type); kfree(subsys); - return NULL; + return ERR_PTR(-EINVAL); } subsys->type = type; subsys->subsysnqn = kstrndup(subsysnqn, NVMF_NQN_SIZE, GFP_KERNEL); if (!subsys->subsysnqn) { kfree(subsys); - return NULL; + return ERR_PTR(-ENOMEM); } kref_init(&subsys->ref); diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c index 33ed95e72d6b..e8e09266bfa5 100644 --- a/drivers/nvme/target/discovery.c +++ b/drivers/nvme/target/discovery.c @@ -372,8 +372,8 @@ int __init nvmet_init_discovery(void) { nvmet_disc_subsys = nvmet_subsys_alloc(NVME_DISC_SUBSYS_NAME, NVME_NQN_DISC); - if (!nvmet_disc_subsys) - return -ENOMEM; + if (IS_ERR(nvmet_disc_subsys)) + return PTR_ERR(nvmet_disc_subsys); return 0; } |