Commit f0d54a54 authored by Keith Busch's avatar Keith Busch Committed by Bjorn Helgaas
Browse files

NVMe: Implement PCIe reset notification callback 



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

Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 3ebe7f9f

drivers/block/nvme-core.c

+11 −0
Original line number Diff line number Diff line
@@ -2775,6 +2775,16 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
	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)

{

	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,

	.slot_reset	= nvme_slot_reset,

	.resume		= nvme_error_resume,

	.reset_notify	= nvme_reset_notify,

};



/* Move to pci_ids.h later */