This is a note to let you know that I've just added the patch titled
nvme-pci: factor out a nvme_pci_alloc_dev helper
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nvme-pci-factor-out-a-nvme_pci_alloc_dev-helper.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 485aa08f8855896607533682cb1a4b5b62c40671
Author: Christoph Hellwig <hch@xxxxxx>
Date: Tue Nov 8 09:44:00 2022 +0100
nvme-pci: factor out a nvme_pci_alloc_dev helper
[ Upstream commit 2e87570be9d2746e7c4e7ab1cc18fd3ca7de2768 ]
Add a helper that allocates the nvme_dev structure up to the point where
we can call nvme_init_ctrl. This pairs with the free_ctrl method and can
thus be used to cleanup the teardown path and make it more symmetric.
Note that this now calls nvme_init_ctrl a lot earlier during probing,
which also means the per-controller character device shows up earlier.
Due to the controller state no commnds can be send on it, but it might
make sense to delay the cdev registration until nvme_init_ctrl_finish.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Tested-by Gerd Bayer <gbayer@xxxxxxxxxxxxx>
Stable-dep-of: dad651b2a44e ("nvme-pci: do not set the NUMA node of device if it has none")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 48886355ce90c..c329f73dbbf38 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2572,6 +2572,7 @@ static void nvme_free_tagset(struct nvme_dev *dev)
dev->ctrl.tagset = NULL;
}
+/* pairs with nvme_pci_alloc_dev */
static void nvme_pci_free_ctrl(struct nvme_ctrl *ctrl)
{
struct nvme_dev *dev = to_nvme_dev(ctrl);
@@ -2857,19 +2858,23 @@ static void nvme_async_probe(void *data, async_cookie_t cookie)
nvme_put_ctrl(&dev->ctrl);
}
-static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static struct nvme_dev *nvme_pci_alloc_dev(struct pci_dev *pdev,
+ const struct pci_device_id *id)
{
- int node, result = -ENOMEM;
- struct nvme_dev *dev;
unsigned long quirks = id->driver_data;
+ int node = dev_to_node(&pdev->dev);
+ struct nvme_dev *dev;
+ int ret = -ENOMEM;
- node = dev_to_node(&pdev->dev);
if (node == NUMA_NO_NODE)
set_dev_node(&pdev->dev, first_memory_node);
dev = kzalloc_node(sizeof(*dev), GFP_KERNEL, node);
if (!dev)
- return -ENOMEM;
+ return NULL;
+ INIT_WORK(&dev->ctrl.reset_work, nvme_reset_work);
+ INIT_WORK(&dev->remove_work, nvme_remove_dead_ctrl_work);
+ mutex_init(&dev->shutdown_lock);
dev->nr_write_queues = write_queues;
dev->nr_poll_queues = poll_queues;
@@ -2877,25 +2882,11 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev->queues = kcalloc_node(dev->nr_allocated_queues,
sizeof(struct nvme_queue), GFP_KERNEL, node);
if (!dev->queues)
- goto free;
+ goto out_free_dev;
dev->dev = get_device(&pdev->dev);
- pci_set_drvdata(pdev, dev);
-
- result = nvme_dev_map(dev);
- if (result)
- goto put_pci;
-
- INIT_WORK(&dev->ctrl.reset_work, nvme_reset_work);
- INIT_WORK(&dev->remove_work, nvme_remove_dead_ctrl_work);
- mutex_init(&dev->shutdown_lock);
-
- result = nvme_setup_prp_pools(dev);
- if (result)
- goto unmap;
quirks |= check_vendor_combination_bug(pdev);
-
if (!noacpi && acpi_storage_d3(&pdev->dev)) {
/*
* Some systems use a bios work around to ask for D3 on
@@ -2905,34 +2896,54 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
"platform quirk: setting simple suspend\n");
quirks |= NVME_QUIRK_SIMPLE_SUSPEND;
}
+ ret = nvme_init_ctrl(&dev->ctrl, &pdev->dev, &nvme_pci_ctrl_ops,
+ quirks);
+ if (ret)
+ goto out_put_device;
+ return dev;
- result = nvme_pci_alloc_iod_mempool(dev);
+out_put_device:
+ put_device(dev->dev);
+ kfree(dev->queues);
+out_free_dev:
+ kfree(dev);
+ return ERR_PTR(ret);
+}
+
+static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct nvme_dev *dev;
+ int result = -ENOMEM;
+
+ dev = nvme_pci_alloc_dev(pdev, id);
+ if (!dev)
+ return -ENOMEM;
+
+ result = nvme_dev_map(dev);
if (result)
- goto release_pools;
+ goto out_uninit_ctrl;
- result = nvme_init_ctrl(&dev->ctrl, &pdev->dev, &nvme_pci_ctrl_ops,
- quirks);
+ result = nvme_setup_prp_pools(dev);
+ if (result)
+ goto out_dev_unmap;
+
+ result = nvme_pci_alloc_iod_mempool(dev);
if (result)
- goto release_mempool;
+ goto out_release_prp_pools;
dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev));
+ pci_set_drvdata(pdev, dev);
nvme_reset_ctrl(&dev->ctrl);
async_schedule(nvme_async_probe, dev);
-
return 0;
- release_mempool:
- mempool_destroy(dev->iod_mempool);
- release_pools:
+out_release_prp_pools:
nvme_release_prp_pools(dev);
- unmap:
+out_dev_unmap:
nvme_dev_unmap(dev);
- put_pci:
- put_device(dev->dev);
- free:
- kfree(dev->queues);
- kfree(dev);
+out_uninit_ctrl:
+ nvme_uninit_ctrl(&dev->ctrl);
return result;
}
