netdev - Re: [PATCH net v2 1/1] mlxbf_gige: Fix kernel panic at shutdown

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Date: Mon, 12 Jun 2023 15:37:18 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: Leon Romanovsky <leon@...nel.org>
Cc: Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
	Asmaa Mnebhi <asmaa@...dia.com>, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	netdev@...r.kernel.org, cai.huoqing@...ux.dev, brgl@...ev.pl,
	chenhao288@...ilicon.com, huangguangbin2@...wei.com,
	David Thompson <davthompson@...dia.com>
Subject: Re: [PATCH net v2 1/1] mlxbf_gige: Fix kernel panic at shutdown

On Mon, Jun 12, 2023 at 02:59:25PM +0300, Leon Romanovsky wrote:
> As far as I can tell, the calls to .shutdown() and .remove() are
> mutually exclusive.

In this particular case, or in general?

In general they aren't. If the owning bus driver also implements its .shutdown()
as .remove(), then it will call the .remove() method of all devices on that bus.
That, after .shutdown() had already been called for those same children.