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Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/pci.c63
1 files changed, 26 insertions, 37 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index dc9a4cf7c1d1..b058b1e9b5bb 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -75,7 +75,7 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown);
* Represents an NVM Express device. Each nvme_dev is a PCI function.
*/
struct nvme_dev {
- struct nvme_queue **queues;
+ struct nvme_queue *queues;
struct blk_mq_tag_set tagset;
struct blk_mq_tag_set admin_tagset;
u32 __iomem *dbs;
@@ -365,7 +365,7 @@ static int nvme_admin_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int hctx_idx)
{
struct nvme_dev *dev = data;
- struct nvme_queue *nvmeq = dev->queues[0];
+ struct nvme_queue *nvmeq = &dev->queues[0];
WARN_ON(hctx_idx != 0);
WARN_ON(dev->admin_tagset.tags[0] != hctx->tags);
@@ -387,7 +387,7 @@ static int nvme_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int hctx_idx)
{
struct nvme_dev *dev = data;
- struct nvme_queue *nvmeq = dev->queues[hctx_idx + 1];
+ struct nvme_queue *nvmeq = &dev->queues[hctx_idx + 1];
if (!nvmeq->tags)
nvmeq->tags = &dev->tagset.tags[hctx_idx];
@@ -403,7 +403,7 @@ static int nvme_init_request(struct blk_mq_tag_set *set, struct request *req,
struct nvme_dev *dev = set->driver_data;
struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
int queue_idx = (set == &dev->tagset) ? hctx_idx + 1 : 0;
- struct nvme_queue *nvmeq = dev->queues[queue_idx];
+ struct nvme_queue *nvmeq = &dev->queues[queue_idx];
BUG_ON(!nvmeq);
iod->nvmeq = nvmeq;
@@ -1046,7 +1046,7 @@ static int nvme_poll(struct blk_mq_hw_ctx *hctx, unsigned int tag)
static void nvme_pci_submit_async_event(struct nvme_ctrl *ctrl)
{
struct nvme_dev *dev = to_nvme_dev(ctrl);
- struct nvme_queue *nvmeq = dev->queues[0];
+ struct nvme_queue *nvmeq = &dev->queues[0];
struct nvme_command c;
memset(&c, 0, sizeof(c));
@@ -1282,7 +1282,6 @@ static void nvme_free_queue(struct nvme_queue *nvmeq)
if (nvmeq->sq_cmds)
dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
nvmeq->sq_cmds, nvmeq->sq_dma_addr);
- kfree(nvmeq);
}
static void nvme_free_queues(struct nvme_dev *dev, int lowest)
@@ -1290,10 +1289,8 @@ static void nvme_free_queues(struct nvme_dev *dev, int lowest)
int i;
for (i = dev->ctrl.queue_count - 1; i >= lowest; i--) {
- struct nvme_queue *nvmeq = dev->queues[i];
dev->ctrl.queue_count--;
- dev->queues[i] = NULL;
- nvme_free_queue(nvmeq);
+ nvme_free_queue(&dev->queues[i]);
}
}
@@ -1325,10 +1322,8 @@ static int nvme_suspend_queue(struct nvme_queue *nvmeq)
static void nvme_disable_admin_queue(struct nvme_dev *dev, bool shutdown)
{
- struct nvme_queue *nvmeq = dev->queues[0];
+ struct nvme_queue *nvmeq = &dev->queues[0];
- if (!nvmeq)
- return;
if (nvme_suspend_queue(nvmeq))
return;
@@ -1384,13 +1379,10 @@ static int nvme_alloc_sq_cmds(struct nvme_dev *dev, struct nvme_queue *nvmeq,
return 0;
}
-static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
- int depth, int node)
+static int nvme_alloc_queue(struct nvme_dev *dev, int qid,
+ int depth, int node)
{
- struct nvme_queue *nvmeq = kzalloc_node(sizeof(*nvmeq), GFP_KERNEL,
- node);
- if (!nvmeq)
- return NULL;
+ struct nvme_queue *nvmeq = &dev->queues[qid];
nvmeq->cqes = dma_zalloc_coherent(dev->dev, CQ_SIZE(depth),
&nvmeq->cq_dma_addr, GFP_KERNEL);
@@ -1409,17 +1401,15 @@ static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
nvmeq->q_depth = depth;
nvmeq->qid = qid;
nvmeq->cq_vector = -1;
- dev->queues[qid] = nvmeq;
dev->ctrl.queue_count++;
- return nvmeq;
+ return 0;
free_cqdma:
dma_free_coherent(dev->dev, CQ_SIZE(depth), (void *)nvmeq->cqes,
nvmeq->cq_dma_addr);
free_nvmeq:
- kfree(nvmeq);
- return NULL;
+ return -ENOMEM;
}
static int queue_request_irq(struct nvme_queue *nvmeq)
@@ -1592,14 +1582,12 @@ static int nvme_pci_configure_admin_queue(struct nvme_dev *dev)
if (result < 0)
return result;
- nvmeq = dev->queues[0];
- if (!nvmeq) {
- nvmeq = nvme_alloc_queue(dev, 0, NVME_AQ_DEPTH,
- dev_to_node(dev->dev));
- if (!nvmeq)
- return -ENOMEM;
- }
+ result = nvme_alloc_queue(dev, 0, NVME_AQ_DEPTH,
+ dev_to_node(dev->dev));
+ if (result)
+ return result;
+ nvmeq = &dev->queues[0];
aqa = nvmeq->q_depth - 1;
aqa |= aqa << 16;
@@ -1629,7 +1617,7 @@ static int nvme_create_io_queues(struct nvme_dev *dev)
for (i = dev->ctrl.queue_count; i <= dev->max_qid; i++) {
/* vector == qid - 1, match nvme_create_queue */
- if (!nvme_alloc_queue(dev, i, dev->q_depth,
+ if (nvme_alloc_queue(dev, i, dev->q_depth,
pci_irq_get_node(to_pci_dev(dev->dev), i - 1))) {
ret = -ENOMEM;
break;
@@ -1638,7 +1626,7 @@ static int nvme_create_io_queues(struct nvme_dev *dev)
max = min(dev->max_qid, dev->ctrl.queue_count - 1);
for (i = dev->online_queues; i <= max; i++) {
- ret = nvme_create_queue(dev->queues[i], i);
+ ret = nvme_create_queue(&dev->queues[i], i);
if (ret)
break;
}
@@ -1894,7 +1882,7 @@ static int nvme_setup_host_mem(struct nvme_dev *dev)
static int nvme_setup_io_queues(struct nvme_dev *dev)
{
- struct nvme_queue *adminq = dev->queues[0];
+ struct nvme_queue *adminq = &dev->queues[0];
struct pci_dev *pdev = to_pci_dev(dev->dev);
int result, nr_io_queues;
unsigned long size;
@@ -2020,7 +2008,7 @@ static void nvme_disable_io_queues(struct nvme_dev *dev, int queues)
retry:
timeout = ADMIN_TIMEOUT;
for (; i > 0; i--, sent++)
- if (nvme_delete_queue(dev->queues[i], opcode))
+ if (nvme_delete_queue(&dev->queues[i], opcode))
break;
while (sent--) {
@@ -2212,7 +2200,7 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
queues = dev->online_queues - 1;
for (i = dev->ctrl.queue_count - 1; i > 0; i--)
- nvme_suspend_queue(dev->queues[i]);
+ nvme_suspend_queue(&dev->queues[i]);
if (dead) {
/* A device might become IO incapable very soon during
@@ -2220,7 +2208,7 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
* queue_count can be 0 here.
*/
if (dev->ctrl.queue_count)
- nvme_suspend_queue(dev->queues[0]);
+ nvme_suspend_queue(&dev->queues[0]);
} else {
nvme_disable_io_queues(dev, queues);
nvme_disable_admin_queue(dev, shutdown);
@@ -2482,8 +2470,9 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev = kzalloc_node(sizeof(*dev), GFP_KERNEL, node);
if (!dev)
return -ENOMEM;
- dev->queues = kzalloc_node((num_possible_cpus() + 1) * sizeof(void *),
- GFP_KERNEL, node);
+
+ dev->queues = kcalloc_node(num_possible_cpus() + 1,
+ sizeof(struct nvme_queue), GFP_KERNEL, node);
if (!dev->queues)
goto free;
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