On 3/21/19 4:11 PM, Christoph Hellwig wrote:
> This mirrors how nvme_map_pci is called and will allow simplifying some
> checks in nvme_unmap_pci later on.
> 
> Signed-off-by: Christoph Hellwig <[email protected]>
> ---
>   drivers/nvme/host/pci.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
> index ce8bdc15ec3c..bc4ee869fe82 100644
> --- a/drivers/nvme/host/pci.c
> +++ b/drivers/nvme/host/pci.c
> @@ -929,7 +929,8 @@ static void nvme_pci_complete_rq(struct request *req)
>       struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
>   
>       nvme_cleanup_cmd(req);
> -     nvme_unmap_data(iod->nvmeq->dev, req);
> +     if (blk_rq_nr_phys_segments(req))
> +             nvme_unmap_data(iod->nvmeq->dev, req);
>       nvme_complete_rq(req);
>   }
>   
> 

Reviewed-by: Chaitanya Kulkarni <[email protected]>

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