linux-kernel - Re: [PATCH 1/6] driver-core : add class iteration api

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Message-ID: <20080122094412.18eab273@gondolin.boeblingen.de.ibm.com>
Date:	Tue, 22 Jan 2008 09:44:12 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	David Brownell <david-b@...bell.net>, Greg KH <gregkh@...e.de>,
	stefanr@...6.in-berlin.de, James.Bottomley@...senpartnership.com,
	a.zummo@...ertech.it, peterz@...radead.org, cbou@...l.ru,
	linux-kernel@...r.kernel.org, stern@...land.harvard.edu,
	dwmw2@...radead.org, davem@...emloft.net, jarkao2@...il.com
Subject: Re: [PATCH 1/6] driver-core : add class iteration api

On Tue, 22 Jan 2008 15:27:08 +0800,
Dave Young <hidave.darkstar@...il.com> wrote:

> On Mon, Jan 21, 2008 at 10:24:17PM -0800, David Brownell wrote:
> > This is called with class->sem held.  So fn() has a
> > constraint to not re-acquire that ... else it'd be
> > self-deadlocking.  I'd like to see docs at least
> > mention that; calls to add or remove class members
> > would be verboten, for example, which isn't an issue
> > with most other driver model iterators.

Indeed, it's a good idea to point this out.

> Update kerneldoc as david brownell's sugestion.
> Is it right for me add Cornelia Huck's ack after this change?

Fine with me.

> ---
> 
> Add the following class iteration functions for driver use:
> class_for_each_device
> class_find_device
> class_for_each_child
> class_find_child
> 
> Signed-off-by: Dave Young <hidave.darkstar@...il.com> 
> Acked-by: Cornelia Huck <cornelia.huck@...ibm.com>
> 
> ---
>  drivers/base/class.c   |  175 +++++++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/device.h |   11 ++-
>  2 files changed, 184 insertions(+), 2 deletions(-)
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