From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2CA99139 for ; Mon, 20 Nov 2023 09:45:16 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 46FFD1042; Mon, 20 Nov 2023 09:46:02 -0800 (PST) Received: from donnerap.manchester.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E710F3F7A6; Mon, 20 Nov 2023 09:45:14 -0800 (PST) Date: Mon, 20 Nov 2023 17:45:12 +0000 From: Andre Przywara To: Uwe =?UTF-8?B?S2xlaW5lLUvDtm5pZw==?= Cc: Borislav Petkov , Tony Luck , James Morse , Mauro Carvalho Chehab , Robert Richter , linux-edac@vger.kernel.org, kernel@pengutronix.de Subject: Re: [PATCH 09/21] EDAC/highbank_mc: Convert to platform remove callback returning void Message-ID: <20231120174512.055f1dda@donnerap.manchester.arm.com> In-Reply-To: <20231004131254.2673842-10-u.kleine-koenig@pengutronix.de> References: <20231004131254.2673842-1-u.kleine-koenig@pengutronix.de> <20231004131254.2673842-10-u.kleine-koenig@pengutronix.de> Organization: ARM X-Mailer: Claws Mail 3.18.0 (GTK+ 2.24.32; aarch64-unknown-linux-gnu) Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Wed, 4 Oct 2023 15:12:42 +0200 Uwe Kleine-K=C3=B6nig wrote: > The .remove() callback for a platform driver returns an int which makes > many driver authors wrongly assume it's possible to do error handling by > returning an error code. However the value returned is ignored (apart > from emitting a warning) and this typically results in resource leaks. >=20 > To improve here there is a quest to make the remove callback return > void. In the first step of this quest all drivers are converted to > .remove_new(), which already returns void. Eventually after all drivers > are converted, .remove_new() will be renamed to .remove(). >=20 > Trivially convert this driver from always returning zero in the remove > callback to the void returning variant. >=20 > Signed-off-by: Uwe Kleine-K=C3=B6nig Reviewed-by: Andre Przywara Cheers, Andre > --- > drivers/edac/highbank_mc_edac.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) >=20 > diff --git a/drivers/edac/highbank_mc_edac.c b/drivers/edac/highbank_mc_e= dac.c > index a0c04a7f95e9..1c5b888ab11d 100644 > --- a/drivers/edac/highbank_mc_edac.c > +++ b/drivers/edac/highbank_mc_edac.c > @@ -251,18 +251,17 @@ static int highbank_mc_probe(struct platform_device= *pdev) > return res; > } > =20 > -static int highbank_mc_remove(struct platform_device *pdev) > +static void highbank_mc_remove(struct platform_device *pdev) > { > struct mem_ctl_info *mci =3D platform_get_drvdata(pdev); > =20 > edac_mc_del_mc(&pdev->dev); > edac_mc_free(mci); > - return 0; > } > =20 > static struct platform_driver highbank_mc_edac_driver =3D { > .probe =3D highbank_mc_probe, > - .remove =3D highbank_mc_remove, > + .remove_new =3D highbank_mc_remove, > .driver =3D { > .name =3D "hb_mc_edac", > .of_match_table =3D hb_ddr_ctrl_of_match,