From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Is there any way to add an attribute under sysfs at the “platform” level?
Date: Mon, 19 Jun 2017 23:25:39 +0800 [thread overview]
Message-ID: <20170619152539.GB22977@kroah.com> (raw)
In-Reply-To: <20170619150928.GA7788@home>
On Mon, Jun 19, 2017 at 06:09:28PM +0300, Roman Storozhenko wrote:
> On Mon, Jun 19, 2017 at 08:55:22AM +0800, Greg KH wrote:
> > On Sun, Jun 18, 2017 at 05:38:36PM +0300, Roman Storozhenko wrote:
> > > Hello everybody!
> > >
> > > I am trying to modify "pcspkr" driver undere linux kernel source tree. I added a new line there:
> > >
> > > sample_id_dir = kobject_create_and_add("devices/platform/pcspkr/sample", NULL);
> >
> > Ick, really? What are you trying to do with "raw" kobjects?
>
> I am trying to add "read/write" attribute under
> "devices/platform/pcspkr". Just for educational purposes. Didn't find another way to do it.
Using a kobject is not how to do that at all, attributes need to be
added to the structure that owns the directory. kobjects are a
directory themselves.
good luck!
greg k-h
prev parent reply other threads:[~2017-06-19 15:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-18 14:38 Is there any way to add an attribute under sysfs at the “platform” level? Roman Storozhenko
2017-06-19 0:55 ` Greg KH
2017-06-19 15:09 ` Roman Storozhenko
2017-06-19 15:25 ` Greg KH [this message]
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