regression on aarch64? panic on boot

[Christoph Hellwig]

On Mon, Jan 16, 2023 at 10:57:11PM +0100, Klaus Jensen wrote:
> Hi,
> 
> I'm getting panics when booting from a QEMU hw/nvme device on an aarch64
> guest in roughly 20% of boots on v6.2-rc4. Example panic below.

This smells like your setup somehow doesn't wait for async driver
probe.  Does the hack below work around it?

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index b13baccedb4a95..f47e19c701d520 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3508,7 +3508,6 @@ static struct pci_driver nvme_driver = {
 	.remove		= nvme_remove,
 	.shutdown	= nvme_shutdown,
 	.driver		= {
-		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,
 #ifdef CONFIG_PM_SLEEP
 		.pm		= &nvme_dev_pm_ops,
 #endif