From: Max Staudt <max@enpas.org>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: axboe@kernel.dk, linux-ide@vger.kernel.org,
linux-m68k@vger.kernel.org, linux-kernel@vger.kernel.org,
glaubitz@physik.fu-berlin.de, schmitzmic@gmail.com,
geert@linux-m68k.org
Subject: Re: [PATCH v4] ata/pata_buddha: Probe via modalias instead of initcall
Date: Mon, 12 Aug 2019 16:26:26 +0200 [thread overview]
Message-ID: <94b4ef23-282d-44e4-d21e-60c8a33c342c@enpas.org> (raw)
In-Reply-To: <da84c857-2c2d-29ec-5e72-e719277faa2d@samsung.com>
On 08/12/2019 02:15 PM, Bartlomiej Zolnierkiewicz wrote:
>> What's a good way to do that, given that we now have module_exit()> defined and an exit function is void?
>
> What about something like this:
>
> static bool xsurf_present;
> ...
> static int __init pata_buddha_late_init(void)
> ...
> if (pata_buddha_probe(z, &xsurf_ent) == 0 &&
> xsurf_present == false)
> xsurf_present = true;
> ...
> static void __exit pata_buddha_exit(void)
> ...
> if (xsurf_present)
> return -EBUSY;
> ...
>
> ?
Okay, so we're talking about the same idea. Great!
Unfortunately, pata_buddha_exit() is void, and thus can't fail. According to Documentation/kernel-hacking/hacking.rst this is by design.
Any other ideas? We could also continue to disallow unloading completely until MFD support comes along.
Max
next prev parent reply other threads:[~2019-08-12 14:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-11 15:36 [PATCH v4] ata/pata_buddha: Probe via modalias instead of initcall Max Staudt
2019-08-11 15:40 ` Max Staudt
2019-08-11 19:28 ` Max Staudt
2019-08-12 10:42 ` Bartlomiej Zolnierkiewicz
2019-08-12 10:55 ` Max Staudt
2019-08-12 12:15 ` Bartlomiej Zolnierkiewicz
2019-08-12 14:26 ` Max Staudt [this message]
2019-08-12 15:01 ` Bartlomiej Zolnierkiewicz
2019-08-12 15:39 ` Max Staudt
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