[Intel-wired-lan] [PATCH] ice: wait for EMP reset after firmware flash
Jesse Brandeburg
jesse.brandeburg at intel.com
Tue Apr 12 18:29:48 UTC 2022
On 4/12/2022 9:08 AM, Alexander Lobakin wrote:
>> +#define ICE_EMP_RESET_SLEEP 5000
>
> Ooof, 5 sec is a lot! Is there any way to poll the device readiness?
> Does it really need the whole 5 sec?
The problem with resets is usually you don't want to disturb the
hardware with PCIe pokes while it's resetting. In this case, this code
only runs if it was indicated by the update status that the firmware
could internally reset itself to pick up new updates, avoiding a reboot.
Yes the five seconds is less than ideal, but it was the value we found
that offered the most stability / likelihood of reset completing. In
this case the 5 seconds is a tradeoff vs a reboot.
Thank you Ivan for chasing down this bug!
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