linux-kernel - Re: [PATCH net-next 2/3] ionic: clean dbpage in de-init

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Message-ID: <20250612131504.GC414686@horms.kernel.org>
Date: Thu, 12 Jun 2025 14:15:04 +0100
From: Simon Horman <horms@...nel.org>
To: Shannon Nelson <shannon.nelson@....com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, brett.creeley@....com
Subject: Re: [PATCH net-next 2/3] ionic: clean dbpage in de-init

On Mon, Jun 09, 2025 at 02:46:43PM -0700, Shannon Nelson wrote:
> Since the kern_dbpage gets set up in ionic_lif_init() and that
> function's error path will clean it if needed, the kern_dbpage
> on teardown should be cleaned in ionic_lif_deinit(), not in
> ionic_lif_free().  As it is currently we get a double call
> to iounmap() on kern_dbpage if the PCI ionic fails setting up
> the lif.  One example of this is when firmware isn't responding
> to AdminQ requests and ionic's first AdminQ call fails to
> setup the NotifyQ.
> 
> Signed-off-by: Shannon Nelson <shannon.nelson@....com>

Reviewed-by: Simon Horman <horms@...nel.org>