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

[Christoph Hellwig]

On Fri, Aug 14, 2020 at 03:14:31AM -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.

The commit log looks a little weird due to the extra indentation.

The patch itself looks good, though:

Reviewed-by: Christoph Hellwig <hch at lst.de>