From patchwork Mon Mar 4 21:28:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 13581298 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 D64874D117 for ; Mon, 4 Mar 2024 21:29:07 +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=1709587749; cv=none; b=ZsUx4RUQLBUPvi24lJJ3NLnsGphXwCyb6d9kPs79kc6CwC068JbggiFLIe/lxw5A7lV8v0SiyvJq/l+1ciWCPXlubKFolUXp/ejb6jIIrmczA25rYOUGTFZAAN30aWv2X5jfQOpYqPxeNte7Sk1M9c6QhBhrVFY8u6JpGosPzZY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709587749; c=relaxed/simple; bh=0GTgiI9XNwKLwdfdM0l4i/fGODkeH75DZ0pc7W7YrQ8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZHRAONrX4OMhpxo+17zBnEBR/cI7d27s50gUCdz84YcDAKrRoE7hkFIIFF8PlFNkO661eb4I3RRuWf7sMTo1i+pVUKiUIbdCzr8Q/4eO0blfhAHC+YXUKz8tgf9gn8JAgFdeJbRoeSJJWZc8tM5uXT2coAOTod0yaZiJ67GCUpo= 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 1rhFrl-0002hb-4Q; Mon, 04 Mar 2024 22:28:57 +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 1rhFrk-004QhM-2A; Mon, 04 Mar 2024 22:28:56 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrj-00H4uF-3A; Mon, 04 Mar 2024 22:28:55 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Chanwoo Choi , MyungJoo Ham , Kyungmin Park Cc: Krzysztof Kozlowski , Alim Akhtar , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 1/5] PM / devfreq: exynos-nocp: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:39 +0100 Message-ID: <8385454855ae5899a4db7655e7a57629855157d8.1709587301.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1674; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=0GTgiI9XNwKLwdfdM0l4i/fGODkeH75DZ0pc7W7YrQ8=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0IAzLtKlpzTiHhWfwGAM2RoJHs3l7fVAgvJ 3RuwWqj5UKJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9CAAKCRCPgPtYfRL+ TpoKB/93Yq8l627M/Q1v+xnPyLEA3as2YGI1ineGJcEWTWPQbYY031YgDzhZsGULV10dpNbF0xU LxsY1kSWt2tKBqxkq0JtjdYuBkc/2yc5DMx6uoRSFbsF5IvShjv4v8BRFqq647mVVJsAoFpo3gs E15REVIFsTsxvR8IK6md3OPDuq5yDTBSglXbL06zbbBMe4sEX7CWUQgP0ABWE8Mkjd0zHGiKu+f ew72rMZrvjtzyYhdO6XdYAdPpA9ll9IqZa+Mnrz1H38rg7xdp/NupLiozyTMVr1uoxhn4i6wdoi ajKGup2aDg/yzE4YI/Tsa55qhpqazRAkwsezFHOznnK0xJ0E X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 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-samsung-soc@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-König --- drivers/devfreq/event/exynos-nocp.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c index c1cc23bcb995..5edc522f715c 100644 --- a/drivers/devfreq/event/exynos-nocp.c +++ b/drivers/devfreq/event/exynos-nocp.c @@ -275,18 +275,16 @@ static int exynos_nocp_probe(struct platform_device *pdev) return 0; } -static int exynos_nocp_remove(struct platform_device *pdev) +static void exynos_nocp_remove(struct platform_device *pdev) { struct exynos_nocp *nocp = platform_get_drvdata(pdev); clk_disable_unprepare(nocp->clk); - - return 0; } static struct platform_driver exynos_nocp_driver = { .probe = exynos_nocp_probe, - .remove = exynos_nocp_remove, + .remove_new = exynos_nocp_remove, .driver = { .name = "exynos-nocp", .of_match_table = exynos_nocp_id_match, From patchwork Mon Mar 4 21:28:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 13581299 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 7FB871EB5A 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 1rhFrl-0002hc-4Q; Mon, 04 Mar 2024 22:28:57 +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 1rhFrk-004QhP-8m; Mon, 04 Mar 2024 22:28:56 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhFrk-00H4uJ-0a; Mon, 04 Mar 2024 22:28:56 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Chanwoo Choi , MyungJoo Ham , Kyungmin Park Cc: Krzysztof Kozlowski , Alim Akhtar , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/5] PM / devfreq: exynos-ppmu: Convert to platform remove callback returning void Date: Mon, 4 Mar 2024 22:28:40 +0100 Message-ID: <028822439693e7d6a74f33385a3f634bdd7143dd.1709587301.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1679; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=WkAMU1jS5gkMcXbruT0u3SkkBeEdVbI821m1pxNR9Wc=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl5j0Jb0TQlki/z6X9KXH7N4rgac6Lp9lbuNz7h gP4vNA6OdGJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeY9CQAKCRCPgPtYfRL+ TqTrB/wIv8LL0R1fUF2/7b5G90138vYJMxUul0GE2smFvfiKra8cp1Xn8D02oQ7FM5eUOH4Ie09 reB94nWjr04NeYD0rFQqYOzhA9Fdawt5QTumuVVW1US2C35npQziC6GN18RLKRjJPJJfRblmJtE ucMb26BdgJrTguBbD+PwzEt8ZmVLZkIZlJ5S8xn2Dyb4eJadbp2bxxoWW4jQwI/AOWxYl5GR+/4 PO1jJ7U4lySywt/EhhGDrtAf163QHJtM07Vgd95zOoqy+ecFdzqxSyR+BJgzWvZOITTjCgP0Hrr hjCwK0Crq06txUdyHo4eRIbROwoJDCidajzEf3I4sQnahtwo X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 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-samsung-soc@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-König --- drivers/devfreq/event/exynos-ppmu.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c index 56bac4702006..7002df20a49e 100644 --- a/drivers/devfreq/event/exynos-ppmu.c +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -692,18 +692,16 @@ static int exynos_ppmu_probe(struct platform_device *pdev) return 0; } -static int exynos_ppmu_remove(struct platform_device *pdev) +static void exynos_ppmu_remove(struct platform_device *pdev) { struct exynos_ppmu *info = platform_get_drvdata(pdev); clk_disable_unprepare(info->ppmu.clk); - - return 0; } static struct platform_driver exynos_ppmu_driver = { .probe = exynos_ppmu_probe, - .remove = exynos_ppmu_remove, + .remove_new = exynos_ppmu_remove, .driver = { .name = "exynos-ppmu", .of_match_table = exynos_ppmu_id_match,