From nobody Sun Feb 8 05:53:40 2026 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9728A171A1 for ; Sun, 10 Mar 2024 08:06:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710057989; cv=none; b=rZHR13dK+eEOIkNeDWxTOtnq5eOsC0fPKfjaDi5VLgpz37F2ypYmCMfXmUr5nXPSVTLjm5LcbZ5v+nqio78B0YiYUtg747qnrhnbG1DtZyUiIfQJ7aY0ZFutujnIzyd/bgIy7DHyAQ3MH0yZvMgZS4aTEaI9Xcvxkv5phYCEhjk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710057989; c=relaxed/simple; bh=Y3iVEuUnTxadv+2Xsne2ZqFIPCWIinyeZaatYcGXFmw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LErPmfQyvxqlI7CgthHJwIrsHbr5iJco/H/AIJ5MLW6iOY2d2og+VYOQ3n7H4yY4A+6j7QC7JkDDZ4CxFC4Al6MH9DH+hK8T7vLNsO74yCMsaOkbUWeqgNa7nRzSssduT4rwh8SwTnX1zMGdAhRVVChtBBuBwrUt5o7J92/YEbA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rjECC-00073Q-Vw; Sun, 10 Mar 2024 09:06:12 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rjECB-005Txt-WB; Sun, 10 Mar 2024 09:06:12 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rjECB-003KQv-2w; Sun, 10 Mar 2024 09:06:11 +0100 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: William Breathitt Gray Cc: Vignesh Raghavendra , Julien Panis , linux-iio@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 1/2] counter: ti-ecap-capture: Convert to platform remove callback returning void Date: Sun, 10 Mar 2024 09:06:06 +0100 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Developer-Signature: v=1; a=openpgp-sha256; l=1863; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=Y3iVEuUnTxadv+2Xsne2ZqFIPCWIinyeZaatYcGXFmw=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl7WnvQ6MhD8ir6vlj0K8bS/UVG6qXp8reE73Xx SkmyEVNDfeJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZe1p7wAKCRCPgPtYfRL+ Tp04B/9JZ66umIX0fdbWIsAqswZ0vtG8Va9k8cSYwBIwxf8u0roWV9DCJnH+iM5UrbYqGnTbv2j 6nxM40CZZTbasN7E5PPLOw8fuD6hzVh5TcNUx/jkA3Qjn9mlnMV9Dyi01+3N7b0bJiqbNZMTHAJ Epzn/3xD/MozpLPFe0IonGoopq6KEb1I9zyHeELLfT5zVjZyE08oauRtlH3xmNi7j5Sk8AJeMbT RJSEsIS5sxkjKqzn5L7gNPU9AuYjI9jjpPquXTdjHOOV5kHKnm85BvUhSlFuenSHcNPxkhC0Ved yfzcbOzps4yhDQJEhLP+h+5rUnEj4wPjIo2WDTmNlrSmDAkg X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org 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. 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(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-K=C3=B6nig --- drivers/counter/ti-ecap-capture.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/counter/ti-ecap-capture.c b/drivers/counter/ti-ecap-ca= pture.c index fb1cb1774674..d33d35055b91 100644 --- a/drivers/counter/ti-ecap-capture.c +++ b/drivers/counter/ti-ecap-capture.c @@ -537,15 +537,13 @@ static int ecap_cnt_probe(struct platform_device *pde= v) return 0; } =20 -static int ecap_cnt_remove(struct platform_device *pdev) +static void ecap_cnt_remove(struct platform_device *pdev) { struct counter_device *counter_dev =3D platform_get_drvdata(pdev); struct ecap_cnt_dev *ecap_dev =3D counter_priv(counter_dev); =20 if (ecap_dev->enabled) ecap_cnt_capture_disable(counter_dev); - - return 0; } =20 static int ecap_cnt_suspend(struct device *dev) @@ -600,7 +598,7 @@ MODULE_DEVICE_TABLE(of, ecap_cnt_of_match); =20 static struct platform_driver ecap_cnt_driver =3D { .probe =3D ecap_cnt_probe, - .remove =3D ecap_cnt_remove, + .remove_new =3D ecap_cnt_remove, .driver =3D { .name =3D "ecap-capture", .of_match_table =3D ecap_cnt_of_match, --=20 2.43.0 From nobody Sun Feb 8 05:53:40 2026 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9CA617745 for ; 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dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rjECC-00073R-UW; Sun, 10 Mar 2024 09:06:12 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rjECC-005Txw-5w; Sun, 10 Mar 2024 09:06:12 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rjECC-003KQz-0K; Sun, 10 Mar 2024 09:06:12 +0100 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: William Breathitt Gray Cc: David Lechner , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/2] counter: ti-eqep: Convert to platform remove callback returning void Date: Sun, 10 Mar 2024 09:06:07 +0100 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; 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However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. 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(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-K=C3=B6nig Acked-by: David Lechner --- drivers/counter/ti-eqep.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/counter/ti-eqep.c b/drivers/counter/ti-eqep.c index b0f24cf3e891..072b11fd6b32 100644 --- a/drivers/counter/ti-eqep.c +++ b/drivers/counter/ti-eqep.c @@ -425,7 +425,7 @@ static int ti_eqep_probe(struct platform_device *pdev) return 0; } =20 -static int ti_eqep_remove(struct platform_device *pdev) +static void ti_eqep_remove(struct platform_device *pdev) { struct counter_device *counter =3D platform_get_drvdata(pdev); struct device *dev =3D &pdev->dev; @@ -433,8 +433,6 @@ static int ti_eqep_remove(struct platform_device *pdev) counter_unregister(counter); pm_runtime_put_sync(dev); pm_runtime_disable(dev); - - return 0; } =20 static const struct of_device_id ti_eqep_of_match[] =3D { @@ -445,7 +443,7 @@ MODULE_DEVICE_TABLE(of, ti_eqep_of_match); =20 static struct platform_driver ti_eqep_driver =3D { .probe =3D ti_eqep_probe, - .remove =3D ti_eqep_remove, + .remove_new =3D ti_eqep_remove, .driver =3D { .name =3D "ti-eqep-cnt", .of_match_table =3D ti_eqep_of_match, --=20 2.43.0