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NVMe: Check returns from nvme_alloc_queue()
author
Matthew Wilcox
<matthew.r.wilcox@intel.com>
Tue, 1 Feb 2011 13:39:04 +0000
(08:39 -0500)
committer
Matthew Wilcox
<matthew.r.wilcox@intel.com>
Fri, 4 Nov 2011 19:52:53 +0000
(15:52 -0400)
It can return NULL, so handle that.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
drivers/block/nvme.c
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diff --git
a/drivers/block/nvme.c
b/drivers/block/nvme.c
index
9377cf3
..
dc82177
100644
(file)
--- a/
drivers/block/nvme.c
+++ b/
drivers/block/nvme.c
@@
-619,6
+619,9
@@
static __devinit struct nvme_queue *nvme_create_queue(struct nvme_dev *dev,
int result;
struct nvme_queue *nvmeq = nvme_alloc_queue(dev, qid, cq_size, vector);
+ if (!nvmeq)
+ return NULL;
+
result = adapter_alloc_cq(dev, qid, nvmeq);
if (result < 0)
goto free_nvmeq;
@@
-655,6
+658,8
@@
static int __devinit nvme_configure_admin_queue(struct nvme_dev *dev)
dev->dbs = ((void __iomem *)dev->bar) + 4096;
nvmeq = nvme_alloc_queue(dev, 0, 64, 0);
+ if (!nvmeq)
+ return -ENOMEM;
aqa = nvmeq->q_depth - 1;
aqa |= aqa << 16;