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NVMe: Fix nvme module init when nvme_major is set 

register_blkdev returns 0 when given a valid major number.

Reported-by:Ross Zwisler <ross.zwisler@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Keith Busch 2012-07-25 16:05:18 -06:00 committed by Matthew Wilcox
parent e9ef46369f
commit 5c42ea1643
1 changed files with 4 additions and 2 deletions
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6
drivers/block/nvme.c
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@ -1716,9 +1716,11 @@ static int __init nvme_init(void)
if (IS_ERR(nvme_thread))
return PTR_ERR(nvme_thread);
nvme_major = register_blkdev(nvme_major, "nvme");
if (nvme_major <= 0)
result = register_blkdev(nvme_major, "nvme");
if (result < 0)
goto kill_kthread;
else if (result > 0)
nvme_major = result;
result = pci_register_driver(&nvme_driver);
if (result)