linux-kernel - Re: [PATCH] Export device_add_attributes() so drivers can use it.

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Message-ID: <fa686aa40902180748i2d621de1j1da7600e8cc3165f@mail.gmail.com>
Date:	Wed, 18 Feb 2009 08:48:24 -0700
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Kay Sievers <kay.sievers@...y.org>
Cc:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Export device_add_attributes() so drivers can use it.

On Wed, Feb 18, 2009 at 8:45 AM, Kay Sievers <kay.sievers@...y.org> wrote:
> On Wed, Feb 18, 2009 at 16:29, Greg KH <gregkh@...e.de> wrote:
>> On Wed, Feb 18, 2009 at 08:11:34AM -0700, Grant Likely wrote:
>>> From: Grant Likely <grant.likely@...retlab.ca>
>>>
>>> I find myself using the pattern of device_add_attributes() and
>>> device_remove_attributes() frequently in my drivers.  Rather than
>>> reinventing the wheel every time, I'm floating this patch to export
>>> the symbols to see how it is received.  If this looks okay then I'll
>>> rework my drivers and post additional patches to use these functions.
>>
>> No objection from me, as long as the symbols are EXPORT_SYMBOL_GPL(),
>> like the rest of the driver core.  Is that ok with you?
>
> These functions used outside the core create attributes after the
> uevent is sent, and userspace will not see these files at event time.
> This is in most cases a pretty broken behavior. Is that the expected
> behavior in your drivers?

??? I don't follow what you mean.

I'm using these functions to allow the driver to add device attribs;
primarily for debugging knobs and controls.  Userspace will see the
files after the driver is bound to the device.  The uevent doesn't
really come into play.

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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