On Tue, Jul 13, 2021 at 7:29 AM Martin K. Petersen
<martin.petersen@oracle.com> wrote:
>
>
> Hi Sreekanth!
>
> > During shutdown just move the IOC state to Ready state by issuing MUR.
>
> This patch needs a justification. Why is it preferable to move to Ready
> state at shutdown?

If the driver won't move the IOC state to Ready state then the IOC
firmware assumes that the host driver is alive and hence tries to post
the events (due to faulty expander phy links, etc) to the host memory
during system reboot time and it leads to 0x2666 (A bus fault occurred
on the host-to-IOC memory move) firmware fault. Hence the driver has
to make sure that it has to move IOC state to 'Ready state' from the
'operational state' by issuing the MUR.

Thanks,
Sreekanth

>
> --
> Martin K. Petersen      Oracle Linux Engineering