linux-kernel - Re: [PATCH] ACPI / GED: use late init to allow other drivers init

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJZ5v0jaGnoCjiU6VuHLyy9Kug8nHzxPxP8tuy3kphtfgmW38w@mail.gmail.com>
Date:   Tue, 25 Apr 2017 01:01:55 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Timur Tabi <timur@...eaurora.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI / GED: use late init to allow other drivers init

On Sat, Apr 22, 2017 at 12:48 AM, Sinan Kaya <okaya@...eaurora.org> wrote:
> On 4/21/2017 6:43 PM, Rafael J. Wysocki wrote:
>>> +late_initcall(ged_init);
>> Does this fix the problem?
>>
>> What about if the module in question is loaded after running late_initcalls?
>
> This fixed the issue for me where I had dependencies for QUP I2C driver and GHES
> drivers. Both of them are modules and get probed via normal module execution path.
>
> However, I'm open to improvements.  Do you have a better suggestion? I can try
> to add some _DEP stuff if it is present, but I remember Linux doesn't like _DEP
> stuff too much.

My point is that nothing guarantees a specific ordering or timing of
module loading in general, so moving stuff to different initcall
levels does not really help 100% of the time.

Thanks,
Rafael