linux-kernel - Re: [PATCH] media: rcar-csi2: Use common error handling code in rcsi2_parse

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Message-ID: <20240316094652.GC2092253@ragnatech.se>
Date: Sat, 16 Mar 2024 10:46:52 +0100
From: Niklas Söderlund <niklas.soderlund@...natech.se>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Markus Elfring <Markus.Elfring@....de>,
	linux-renesas-soc@...r.kernel.org, linux-media@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: rcar-csi2: Use common error handling code in
 rcsi2_parse_dt()

Hi Dan,

On 2024-03-04 14:16:56 +0300, Dan Carpenter wrote:
> On Mon, Mar 04, 2024 at 10:48:47AM +0000, Sakari Ailus wrote:
> > Hi Dan,
> > 
> > On Fri, Mar 01, 2024 at 04:42:01PM +0300, Dan Carpenter wrote:
> > > Sakari Ailus pointed out in another thread that we could use __free()
> > > instead.  Something like this:
> > > 
> > 
> > Looks good to me.
> 
> Thanks for checking!  I've never used these before.
> 
> > 
> > We could merge this with your SoB (pending Niklas's review). :-) The driver
> > has been since moved under drivers/media/platform/renesas/rcar-vin/ .
> 
> Alright.  I can resend this as a proper patch.

Please do.

I do find the idea of scoped operations and the syntax

    struct fwnode_handle *fwnode __free(fwnode_handle) = NULL;

a bit foreign in a C context. But I think the intention is clear and it 
allows us to avoid having the remember to free the fwnode in error paths 
which is a nice thing.

> 
> regards,
> dan carpenter
> 

-- 
Kind Regards,
Niklas Söderlund