linux-kernel - Re: [PATCH v3 1/2] misc: sram: Move probe of sram subsystem

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Message-Id: <0d373379-5a6e-4b9c-af53-f8ab54dd4680@app.fastmail.com>
Date: Tue, 09 Apr 2024 14:10:01 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Pascal FONTAIN" <Pascal.FONTAIN@...hmann.info>,
 linux-kernel@...r.kernel.org,
 "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Cc: "Andrew Davis" <afd@...com>
Subject: Re: [PATCH v3 1/2] misc: sram: Move probe of sram subsystem

On Tue, Apr 9, 2024, at 14:06, Pascal FONTAIN wrote:
> From: Pascal Fontain <pascal.fontain@...hmann.info>
>
> The sram subsystem might use the dma-buf subsystem which only gets
> initialized in subsys_initcall phase. Because of this we move the sram
> initcall into the device phase.
>
> Signed-off-by: Pascal Fontain <pascal.fontain@...hmann.info>

This does not look safe unless you check all users of the sram
driver to ensure they are not needed early and they can handle
deferred probing.

      Arnd