[PATCH] Avoid reset work on watchdog timer function during error recovery

[jthumshirn@suse.de (Johannes Thumshirn)]

On Mittwoch, 6. April 2016 17:30:35 CEST Guilherme G. Piccoli wrote:
> This patch adds a check on nvme_watchdog_timer() function to avoid the
> call to reset_work() when an error recovery process is ongoing on
> controller. The check is made by looking at pci_channel_offline()
> result.
> 
> If we don't check for this on nvme_watchdog_timer(), error recovery
> mechanism can't recover well, because reset_work() won't be able to
> do its job (since we're in the middle of an error) and so the
> controller is removed from the system before error recovery mechanism
> can perform slot reset (which would allow the adapter to recover).
> 
> Signed-off-by: Guilherme G. Piccoli <gpiccoli at linux.vnet.ibm.com>

Reviewed-by: Johannes Thumshirn <jthumshirn at suse.de>

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Johannes Thumshirn                                          Storage
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