[PATCH v2] nvme-pci: cancel nvme device request before disabling

[Keith Busch]

On Fri, Aug 28, 2020 at 10:17:08AM -0400, Tong Zhang wrote:
> This patch addresses an irq free warning and null pointer dereference
> error problem when nvme devices got timeout error during initialization.
> This problem happens when nvme_timeout() function is called while
> nvme_reset_work() is still in execution. This patch fixed the problem by
> setting flag of the problematic request to NVME_REQ_CANCELLED before
> calling nvme_dev_disable() to make sure __nvme_submit_sync_cmd() returns
> an error code and let nvme_submit_sync_cmd() fail gracefully.
> The following is console output.

Thanks, this looks good to me.

Reviewed-by: Keith Busch <kbusch at kernel.org>