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NVMe: fix error return checking from blk_mq_alloc_request()

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We return an error pointer or the request, not NULL. Half
the call paths got it right, the others didn't. Fix those up.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2014-12-10 13:02:44 -07:00
parent c87fd5407e
commit 97fe383222
1 changed files with 6 additions and 6 deletions
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12
drivers/block/nvme-core.c
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@ -875,8 +875,8 @@ static int __nvme_submit_admin_cmd(struct nvme_dev *dev, struct nvme_command *cm
struct request *req;
req = blk_mq_alloc_request(dev->admin_q, WRITE, GFP_KERNEL, false);
if (!req)
return -ENOMEM;
if (IS_ERR(req))
return PTR_ERR(req);
res = nvme_submit_sync_cmd(req, cmd, result, timeout);
blk_mq_free_request(req);
return res;
@ -896,8 +896,8 @@ int nvme_submit_io_cmd(struct nvme_dev *dev, struct nvme_ns *ns,
req = blk_mq_alloc_request(ns->queue, WRITE, (GFP_KERNEL|__GFP_WAIT),
false);
if (!req)
return -ENOMEM;
if (IS_ERR(req))
return PTR_ERR(req);
res = nvme_submit_sync_cmd(req, cmd, result, NVME_IO_TIMEOUT);
blk_mq_free_request(req);
return res;
@ -1691,8 +1691,8 @@ static int nvme_user_cmd(struct nvme_dev *dev, struct nvme_ns *ns,
req = blk_mq_alloc_request(ns->queue, WRITE,
(GFP_KERNEL|__GFP_WAIT), false);
if (!req)
status = -ENOMEM;
if (IS_ERR(req))
status = PTR_ERR(req);
else {
status = nvme_submit_sync_cmd(req, &c, &cmd.result,
timeout);