[PATCH]nvme-pci: Fixes EEH failure on ppc

[Sagi Grimberg]

On 02/05/2018 11:49 PM, wenxiong at vmlinux.vnet.ibm.com wrote:
> From: Wen Xiong <wenxiong at linux.vnet.ibm.com>
> 
> With b2a0eb1a0ac72869c910a79d935a0b049ec78ad9(nvme-pci: Remove watchdog
> timer), EEH recovery stops working on ppc.
> 
> After removing whatdog timer routine, when trigger EEH on ppc, we hit
> EEH in nvme_timeout(). We would like to check if pci channel is offline
> or not at the beginning of nvme_timeout(), if it is already offline,
> we don't need to do future nvme timeout process.

This makes sense to me.

Reviewed-by: Sagi Grimberg<sagi at grimberg.me>