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| author | Keith Busch <keith.busch@intel.com> | 2018-04-27 13:42:52 -0600 |
|---|---|---|
| committer | Keith Busch <keith.busch@intel.com> | 2018-05-02 08:32:24 -0600 |
| commit | 1811977568e0f59d145da087e45f3dca09dab1c3 (patch) | |
| tree | a89d3e62d9336a8a3f728883c47e8ea7c4f889fc /drivers/nvme/host/pci.c | |
| parent | ea48e877994f086af481427bac110aa63686c3ce (diff) | |
| download | lwn-1811977568e0f59d145da087e45f3dca09dab1c3.tar.gz lwn-1811977568e0f59d145da087e45f3dca09dab1c3.zip | |
nvme/pci: Use async_schedule for initial reset work
This patch schedules the initial controller reset in an async_domain
so that it can be synchronized from wait_for_device_probe(). This way
the kernel waits for the initial nvme controller scan to complete for
all devices before proceeding with the boot sequence, which may have
nvme dependencies.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/nvme/host/pci.c')
| -rw-r--r-- | drivers/nvme/host/pci.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 8a86dbb0583d..dcd1be005eef 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -13,6 +13,7 @@ */ #include <linux/aer.h> +#include <linux/async.h> #include <linux/blkdev.h> #include <linux/blk-mq.h> #include <linux/blk-mq-pci.h> @@ -2488,6 +2489,13 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) return 0; } +static void nvme_async_probe(void *data, async_cookie_t cookie) +{ + struct nvme_dev *dev = data; + nvme_reset_ctrl_sync(&dev->ctrl); + flush_work(&dev->ctrl.scan_work); +} + static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) { int node, result = -ENOMEM; @@ -2532,7 +2540,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev)); - nvme_reset_ctrl(&dev->ctrl); + async_schedule(nvme_async_probe, dev); return 0; |