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NVMe: Implement PCIe reset notification callback

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Quiesce and shutdown the device prior to reset, then restart the device and
resume IO after.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Keith Busch 2014-05-02 10:40:43 -06:00 committed by Bjorn Helgaas
parent 3ebe7f9f7e
commit f0d54a5417
1 changed files with 11 additions and 0 deletions

11
drivers/block/nvme-core.c

@ -2775,6 +2775,16 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return result; return result;
} }
static void nvme_reset_notify(struct pci_dev *pdev, bool prepare)
{
struct nvme_dev *dev = pci_get_drvdata(pdev);
if (prepare)
nvme_dev_shutdown(dev);
else
nvme_dev_resume(dev);
}
static void nvme_shutdown(struct pci_dev *pdev) static void nvme_shutdown(struct pci_dev *pdev)
{ {
struct nvme_dev *dev = pci_get_drvdata(pdev); struct nvme_dev *dev = pci_get_drvdata(pdev);
@ -2839,6 +2849,7 @@ static const struct pci_error_handlers nvme_err_handler = {
.link_reset = nvme_link_reset, .link_reset = nvme_link_reset,
.slot_reset = nvme_slot_reset, .slot_reset = nvme_slot_reset,
.resume = nvme_error_resume, .resume = nvme_error_resume,
.reset_notify = nvme_reset_notify,
}; };
/* Move to pci_ids.h later */ /* Move to pci_ids.h later */