linux-kernel - Re: [PATCH v2 0/4] of: automate of_node_put()

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Message-ID: <20240223163602.0000697a@Huawei.com>
Date: Fri, 23 Feb 2024 16:36:02 +0000
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC: <linux-iio@...r.kernel.org>, Rob Herring <robh@...nel.org>, Frank Rowand
	<frowand.list@...il.com>, <linux-kernel@...r.kernel.org>, Julia Lawall
	<Julia.Lawall@...ia.fr>, Peter Zijlstra <peterz@...radead.org>, "Greg
 Kroah-Hartman" <gregkh@...uxfoundation.org>, <marek.vasut@...il.com>
Subject: Re: [PATCH v2 0/4] of: automate of_node_put() - new approach to
 loops.

On Fri, 23 Feb 2024 17:52:46 +0200
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> On Fri, Feb 23, 2024 at 12:44:28PM +0000, Jonathan Cameron wrote:
> > The equivalent device_for_each_child_node_scoped() series for
> > fwnode will be queued up in IIO for the merge window shortly as
> > it has gathered sufficient tags. Hopefully the precdent set there
> > for the approach will reassure people that instantiating the
> > child variable inside the macro definition is the best approach.
> > https://lore.kernel.org/linux-iio/20240217164249.921878-1-jic23@kernel.org/
> > 
> > v2: Andy suggested most of the original converted set should move to
> >     generic fwnode / property.h handling.  Within IIO that was
> >     a reasonable observation given we've been trying to move away from
> >     firmware specific handling for some time. Patches making that change
> >     to appropriate drivers posted.
> >     As we discussed there are cases which are not suitable for such
> >     conversion and this infrastructure still provides clear benefits
> >     for them.  
> 
> >   iio: adc: rcar-gyroadc: use for_each_available_child_node_scoped()  
> 
> Is this the only one so far? Or do we have more outside of IIO?
> 
> I'm fine with the code if OF maintainers think it's useful.
> My concern is to make as many as possible drivers to be converted to
> use fwnode instead of OF one.
> 
Julia wrote a coccinelle script 
__free() cases
https://lore.kernel.org/all/alpine.DEB.2.22.394.2401291455430.8649@hadrien/