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From: giedrius.statkevicius@gmail.com (Giedrius Statkevičius)
To: kernelnewbies@lists.kernelnewbies.org
Subject: What is this MODULE_ALIAS() used for?
Date: Sat, 10 Dec 2016 10:40:56 +0200	[thread overview]
Message-ID: <CABNMmsD9g0YKcASZmzeOAkYZukVWWurJxHU19ko8Qy9r71RgoA@mail.gmail.com> (raw)
In-Reply-To: <158e6604a5b.daf47f044338.1522167468753623731@zoho.com>

On Sat, Dec 10, 2016 at 3:36 AM, Perr Zhang <strongbox8@zoho.com> wrote:
> source code:
>
> MODULE_ALIAS("platform:sm501");
>
> static const struct of_device_id of_sm501_match_tbl[] = {
>     { .compatible = "smi,sm501", },
>     { /* end */ }
> };
> MODULE_DEVICE_TABLE(of, of_sm501_match_tbl);
>
> location: http://lxr.free-electrons.com/source/drivers/mfd/sm501.c#L1711
>
> Since there is the MODULE_DEVICE_TABLE(), why  the author additionally adds the MODULE_ALIAS()?
> What exactly is this MODULE_ALIAS() used for?
>
>
>

MODULE_ALIAS() adds some more info for the userspace programs. In
/lib/modules/VERSION/modules.alias you can see the aliases that were parsed from
the modules. In your case, running `modprobe platform:sm501` would insert the
sm501 module.

Thanks,
Giedrius

  reply	other threads:[~2016-12-10  8:40 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-10  1:36 What is this MODULE_ALIAS() used for? Perr Zhang
2016-12-10  8:40 ` Giedrius Statkevičius [this message]
2016-12-14 13:01 ` Aruna Hewapathirane

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