linux-kernel - Re: [PATCH 1/3] net: marvell: prestera: fix driver reload

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Date: Mon, 11 Mar 2024 15:27:30 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Elad Nachman <enachman@...vell.com>
Cc: taras.chornyi@...ision.eu, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, kory.maincent@...tlin.com,
	thomas.petazzoni@...tlin.com, miquel.raynal@...tlin.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] net: marvell: prestera: fix driver reload

On Mon, Mar 11, 2024 at 03:51:10PM +0200, Elad Nachman wrote:
> From: Elad Nachman <enachman@...vell.com>
> 
> Driver rmmod after insmod would fail because of
> the following issues:
> 
> 1. API call to reset the switch HW and restart the
>    firmware CPU firmware code loading was missing in
>    driver removal code handler.
> 2. Timeout waiting for the firmware CPU firmware
>    loader code to start was too small.
> 
> Fix by adding API call to reset the switch HW and
> restart the firmware CPU firmware code loading when
> handling the driver removal procedure,
> increase the timeout waiting for this restart operation
> from 5 to 30 seconds.

The commit messages suggests this does two things. So it should be two
patches.

Please could you explain why the firmware needs resetting during
shutdown. That is odd, so should be explained. The commit message is
about Why?, not What?

      Andrew