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[82.149.12.148]) by smtp.gmail.com with ESMTPSA id m8-20020a170906234800b009bf94de8971sm2250339eja.70.2023.11.18.13.50.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Nov 2023 13:50:34 -0800 (PST) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: Arnd Bergmann , Chen-Yu Tsai , Samuel Holland , Uwe =?ISO-8859-1?Q?Kleine=2DK=F6nig?= Cc: linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: Re: [PATCH 06/12] bus: sun50i-de2: Convert to platform remove callback returning void Date: Sat, 18 Nov 2023 22:50:33 +0100 Message-ID: <5727528.DvuYhMxLoT@jernej-laptop> In-Reply-To: <20231109202830.4124591-7-u.kleine-koenig@pengutronix.de> References: <20231109202830.4124591-1-u.kleine-koenig@pengutronix.de> <20231109202830.4124591-7-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dne =C4=8Detrtek, 09. november 2023 ob 21:28:36 CET je Uwe Kleine-K=C3=B6ni= g napisal(a): > 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: Jernej Skrabec Best regards, Jernej > --- > drivers/bus/sun50i-de2.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) >=20 > diff --git a/drivers/bus/sun50i-de2.c b/drivers/bus/sun50i-de2.c > index 414f29cdedf0..3339311ce068 100644 > --- a/drivers/bus/sun50i-de2.c > +++ b/drivers/bus/sun50i-de2.c > @@ -24,10 +24,9 @@ static int sun50i_de2_bus_probe(struct platform_device= *pdev) > return 0; > } > =20 > -static int sun50i_de2_bus_remove(struct platform_device *pdev) > +static void sun50i_de2_bus_remove(struct platform_device *pdev) > { > sunxi_sram_release(&pdev->dev); > - return 0; > } > =20 > static const struct of_device_id sun50i_de2_bus_of_match[] =3D { > @@ -37,7 +36,7 @@ static const struct of_device_id sun50i_de2_bus_of_matc= h[] =3D { > =20 > static struct platform_driver sun50i_de2_bus_driver =3D { > .probe =3D sun50i_de2_bus_probe, > - .remove =3D sun50i_de2_bus_remove, > + .remove_new =3D sun50i_de2_bus_remove, > .driver =3D { > .name =3D "sun50i-de2-bus", > .of_match_table =3D sun50i_de2_bus_of_match, >=20